Abstract
Research on the effectiveness of case studies in teaching engineering ethics in higher education is underdeveloped. To add to our knowledge, we have systematically compared the outcomes of two case approaches to an undergraduate course on the ethics of technology: a detached approach using real-life cases and a challenge-based learning (CBL) approach with students and stakeholders acting as co-creators (CC). We first developed a practical typology of case-study approaches and subsequently tested an evaluation method to assess the students’ learning experiences (basic needs and motivation) and outcomes (competence development) and staff interpretations and operationalizations, seeking to answer three questions: (1) Do students in the CBL approach report higher basic needs, motivation and competence development compared to their peers in the detached approach? (2) What is the relationship between student-perceived co-creation and their basic needs, motivation and competence development? And (3) what are the implications of CBL/CC for engineering-ethics teaching and learning? Our mixed methods analysis favored CBL as it best supported teaching and research goals while satisfying the students’ basic needs and promoting intrinsic motivation and communication competences. Competence progress in other areas did not differ between approaches, and motivation in terms of identified regulation was lower for CBL, with staff perceiving a higher workload. We propose that our case typology model is useful and that as a method to engage students as co-creators, CBL certainly merits further development and evaluation, as does our effectiveness analysis for engineering ethics instruction in general and for case-study approaches in particular.
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Introduction
Case studies are popular in engineering-ethics education and the variation in approaches is considerable (Colby & Sullivan, 2008; Haws, 2001; Herkert, 2000). Several studies analyzing such approaches in higher education addressed their effects on student motivation (Bairaktarova & Woodcock, 2017; Colby & Sullivan, 2008; Fotheringham, 2008; Haws, 2001; Herkert, 2000; Wilson, 2013). Yet, despite the widespread use of case instruction and these first inquiries into its impact on motivation, there is a lack of rigorous research on its effectiveness (Barry & Ohland, 2009; Bombaerts et al., 2018; Thiel et al., 2013; van Diggelen et al., 2019), leaving it unclear which approach is the more effective for which particular goal (). Accordingly, there is an imperative need to understand the principles governing the implementation of ethics case studies in engineering curricula and of developing metrics for measuring the effectiveness of various case formats and applications (Martin et al., 2021, p.13).
The present study aims to fill this gap by providing a practical typology of case-study approaches in higher engineering-ethics education and presenting the results of a mixed methods evaluation of students’ learning experiences and outcomes, and staff interpretations and operationalizations for two different approaches to an ethics-of-technology course for first-year engineering students in the Netherlands. Besides describing our findings and conclusions for the course evaluated, we will discuss potential implications for case approaches in engineering-ethics instruction in general.
Classifying Case Approaches in Engineering-Ethics Education
Case Studies
Described as promising scenarios for pedagogical purposes (Lundeberg, 2008), case studies have the “ability to introduce challenging, real-world situations and related decision complexity into the classroom” (Kauffmann et al., 2005), thus reflecting the features of a true profession or authentic problems professionals might encounter in everyday practice (Herreid, 1994). They have a significant contextual component, are ambiguous and allow for multiple perspectives and representations of a problem (Martin et al., 2018, 2019).
Case studies may differ substantially as to their scope. Although Colby and Sullivan (2008, p. 331) note that cases “typically involve a mix of normal human error, organizational failure and individual violations of professional standards”, we can distinguish between micro and macro cases, the first emphasizing the individualist perspective of an agent required to make a decision in light of the situation described in the scenario, and the latter the broader context and the collective nature of decision-making in engineering (Herkert, 2005; Martin et al., 2019). Considering the likelihood of occurrence of the scenario described, case studies may focus on special or one-off events, i.e. notable failures and disasters, or on more mundane, common situations that are more likely to occur in an engineer’s career.
We propose to distinguish an additional dimension based on the degree of student involvement, where the content of case studies can be denoted as detached when the scenario is remote and students have no direct experience or involvement with the case, requiring a co-creative, active engagement of students in manipulating the case to arrive at a specific outcome. We consider co-creative special-event cases less relevant and will discount these. Since our typology is meant to serve as a practical tool and not as a systematic delineation of case types, below we will define six case approaches (see Table 1).
Detached special-event macro cases focus on disasters to invite reflection on the systemic context of engineering, including policy effects or cultural and socio-economic models. They often call for students to take a hypothetical stance on the “kind of world they want to engineer” (Mitcham, 2017). Students study structural limitations and are encouraged to pursue responsible engineering practices by improving existing norms, policies and regulations (Swearengen & Woodhouse, 2003; Swierstra & Jelsma, 2005).
Detached special-event micro cases are often referred to as “disaster” cases as they present events with catastrophic consequences for individuals or the environment. There is a strong focus on accountability and prevention and the retrospective identification of the chain of causes leading up to the calamitous incident. It is one of the most popular case types in engineering-ethics instruction (Huff & Frey, 2005: 401). As the same scenarios are used for both approaches described above, in Table 1 we have pooled the examples for these two case types.
Detached common macro cases are concerned with the societal, cultural and political aspects of engineering (Lynch & Kline, 2000) and feature an engineering product or decision-making process, analyzing the products values and anticipated use contexts, emphasizing forward-looking reflections. Broader engineering issues such as sustainability or inequality can be explored hypothetically using this case type (Gorman et al., 2000; Kline, 2010) such that students learn how technological innovation is interwoven with a broader, complex reality.
Detached common micro cases are typically formulated as dilemmas individual engineers are likely to be faced with during their careers, strongly emphasizing the development of moral reasoning and knowledge of professional codes and standards. Topics tend to be derived from the precepts of professional codes of conduct, national and international regulations and health and safety standards, and may include conflicts of interest, professional integrity or safety issues (Latcha & Jordan, 1996; Shallcross, 2013).
There is a growing criticism of detached case studies (Martin et al., 2021). Due to the distant nature of engineering-ethics case instruction we struggle to sufficiently show the social dimension of engineering and the power relationships inherent to the profession (Bucciarelli, 2008; Lynch & Kline, 2000; Martin et al., 2019; Winner, 1986). So-called co-creative initiatives explore more effective approaches by using cases that reflect real-life engineering contexts and practices (Membrillo-Hernández et al., 2018; Holgaard & Kolmos, 2018; Kalamas Hedden et al., 2017; Bissett-Johnson & Radcliffe, 2021; Neto et al., 2019). Co-creation is seen as “the active involvement and engagement of actors in the production of knowledge that takes place in processes either emerging or being facilitated and designed to accomplish such active involvement” (Frantzeskaki & Kabisch, 2016, p. 91). The products, procedures or reflections that arise from the educational process are communicated widely and applied in practice (Iversen & Pedersen, 2017). Co-creative learning fosters problem ownership among students (Ryan & Tilbury, 2013), promoting shared commitment among students, tutors/coaches and external stakeholders, making the learning process a truly collaborative endeavor (Cook-Sather et al., 2014; Nieuwerburgh, 2012; Passmore, 2015; Ribes-Giner et al., 2016; van Diggelen et al., 2019). In consultation with stakeholders, students perform case-specific ethics evaluations and, if outcomes are judged ethically and technically suitable by both parties, they will co-create an-end product fit for use in the sought-after innovation process embracing decision reports, promotional/educational videos, persuasive artefacts or an improved technology.
Two case-study types can be distinguished: co-creative common macro cases that promote students to take an active stance on the design of suitable strategies and engineering solutions to address broad-scale problems such as the millennium goals, and co-creative common micro cases where students will be collaborating with one or multiple (local) external stakeholders on the ethical and technical aspects of an authentic challenge.
Challenge-based learning
Challenge-based learning (CBL) is one approach to the co-creative common micro case. In CBL, student learning centers on an open ended, real-life unsolved challenge for which a community of external stakeholders (companies, governments, knowledge institutions and/or citizens) seeks a solution (Kohn Rådberg et al., 2020; Malmqvist et al., 2015). Students are asked to conceive, design and implement environmental, social and/or economic solutions by using existing information or gaining new knowledge from different disciplines (Malmqvist et al., 2015; Membrillo-Hernández et al., 2019a, b). As this learning process contains a substantial degree of uncertainty, the students are expected to show or develop high levels of autonomy and self-directedness (Membrillo-Hernández et al., 2019a, b; Tang & Chow, 2020). Within this didactic context, the teacher is viewed less as an expert and more as a coach guiding students through this co-creative process (Malmqvist et al., 2015; Membrillo-Hernández et al., 2019a, b). Being a fairly recent instructional method, little evidence on CBS’s effectiveness in engineering-ethics education is available. Before analyzing the approaches used in our course, we will describe our evaluation criteria and procedure.
Assessing the Effectiveness of Case Approaches
To determine the effectiveness of our CBL approach we will use the curriculum model of Goodlad and others (Goodlad, 1979; Bombaerts et al., 2019) describing three levels that each consist of two sub-dimensions. First, the intended curriculum level refers to the vision and underlying philosophy of a curriculum (ideal) and to the curriculum intentions (formal/written). Second, the implemented curriculum level includes the interpretation of the curriculum by the teachers (perceived) and the teaching as it actually happens (operational). Third, the attained curriculum level consists of the learning experiences by the students (experiential) and the resulting learning outcomes (learned).
Goodlad’s curriculum model indicates it might be very interesting to use the intended curriculum level and its two sub-dimensions (ideal and formal/written) to analyze the reasons to opt, implicitly or explicitly, for a certain case approach. The overview on educational objectives given in Table 1 could be an interesting starting point. Given the limitations of the article and because this is not relevant for our current analysis, we will not further analyze this. However, as mentioned in the introduction, we want to focus on staff interpretations (perceived curriculum) and operationalizations (operational curriculum) and on students’ learning experiences (experiential curriculum) and outcomes (learned curriculum).
Perceived and Operational Curriculum
To efficiently translate the CBL principles into an actual course, teachers need to consider the instrumentality (Does it support the teaching process?), congruence (Does it fit the circumstances?) and cost (Is it feasible considering the available time and resources?) of a (re)design (Bombaerts, 2020; Doyle & Ponder, 1977; Janssen et al., 2013). A teacher’s previous experiences in teaching ethics to engineering students (e.g., frustrations or successes) and their personal views of the characteristics of the student population (e.g. approaches to learning or intellectual development) will strongly determine their course design (Felder & Brent, 2005), as will contextual factors such as the time available to develop courses, pregiven learning objectives, the type of classrooms available, student group sizes, and digital platforms (Bombaerts & Spahn, 2019). As CBL is a very open approach, its effectiveness is best evaluated using open qualitative methods such as open questions, interviews and observations.
Experiential Curriculum: Basic Needs and Motivation
When analyzing the students’ learning experiences (experiential sub-dimension), the motivation of students to engage in the learning process is a widely used indicator. Self-determination theory (SDT), a well-established motivational model in engineering education, states that motivation is nourished by three basic needs described as “psychological nutrients that are essential for individuals’ adjustment, integrity and growth” (Ryan, 1995; Vansteenkiste et al., 2020). Autonomy refers to the perception of psychological freedom, choice in activities and voluntary participation. In an ethics course, students will appreciate being allowed to determine how to execute an assignment and which ethical theories to apply. Relatedness implies the need to feel connected to peers, tutors/coaches or external stakeholders, while competence denotes the feeling of being able to successfully perform an activity, have control over the outcome and experience mastery (Ryan, 1995). An ethics assignment should be designed such that students will see the task as an exciting challenge they are happy to tackle.
SDT defines motivation as a spectrum ranging from amotivation, with students avoiding a given task and showing disinterest in the learning experience, to intrinsic motivation, where students inherently value the enjoyable aspects of studying. Between these extremes, SDT distinguishes identified regulation where students consciously value a learning goal such that they recognize the personal importance of the task and develop a desire for self-endorsement. Even if an engineering student may not be intrinsically attracted to the ethics of their discipline, his/her aspiration to become a good engineer may prompt him/her to acknowledge that it is an essential component of the profession and to thus put in an effort to successfully complete the course.
CBL is claimed to satisfy these basic needs by fostering the students’ autonomy and self-directedness (Kohn Rådberg et al., 2020), the development of disciplinary and transversal competences (Membrillo-Hernández et al., 2019a, b) and the feeling of being part of a community that works towards a common goal (Acuńa et al., 2017). Thus, CBL can be expected to cultivate motivation for learning by rendering practical meaning to the study (Membrillo-Hernández, 2019a, b). Since high intrinsic motivation is related to beneficial behavioral outcomes such as deep learning, the aim is to optimally meet the students’ basic needs and boost motivation.
Learned Curriculum: ACQA-Based Self-assessment of Competence Development
When analyzing the students’ learning outcomes (Goodlad’s learning sub-dimension), competences are an important indicator. We had our students assess the course using the Academic Competences and Quality Assurance (ACQA), a measure of competence development gauging competencies such as dynamic combinations of knowledge and epistemic values (Silvast et al., 2020), understanding, skills and abilities (Anderson et al., 2001). The ACQA offers a framework for the evaluation of engineering education (Meijers et al., 2005; Perrenet et al., 2017) by distinguishing seven competence domains relevant to all training programs and defining five to eight discipline-independent competencies per domain at the bachelor’s and master’s level. ACQA can be used as a teacher-rated or self-assessment tool and, being a generic measure for engineering education, can be used to compare different courses. In our evaluation we will focus on six competence domains and have reformulated the competencies to fit the engineering-ethics course evaluated (see Table 6 in the “Appendix”).
Context: First-Year Undergraduate Course on the Ethics of Technology
We compared two approaches to a compulsory ethics-of-technology course first-year engineering students attended from April to June 2019 at Eindhoven University of Technology in the Netherlands (Bekkers & Bombaerts, 2017; Bombaerts & Doulougeri, 2019; Doulougeri & Bombaerts, 2019).
Detached Approach
The first, detached course approach comprised theoretical lectures and a lab assignment. Students had the choice between two tracks: Behaviour Change Technologies and Self-Driving Cars. Both tracks were attended by approximately 150 students who all attended a lecture at the beginning of each week, after which they joined their tutorial group. Each group consisted of around 35 students supervised by a PhD student. The lectures covered the ethical aspects of the two topics in general terms, after which basic ethical concepts such as values and risks were introduced, leading up to major ethical theories (deontology, utilitarianism and virtue ethics) and reflections on the strengths and weaknesses of each ethical perspective.
Students worked in groups of four on a macro or micro common case study (e.g., analysizing the merits and drawbacks of health-coaching apps or programming specific crash algorithms, respectively). The groups were asked to apply the Ethical Cycle (van de Poel & Royakkers, 2007), a step-by-step problem-solving tool that guides students through the ethical questions of a case study (see Fig. 1 for the steps), twice during the course. In the first cycle, the students evaluated different options for actions considering ethical values and potential risks. After having received feedback on their conclusions from their peers and tutor/coach, in the second cycle they were invited to improve their first analysis based on the feedback and subsequently review the resulting report from the perspective of the three major ethical theories. Before handing in their work, they presented this draft to their peers and tutor for feedback and a final tweak.
Challenge-Based Learning Approach
The CBL course had a total of 180 students attending in three discussion groups of 60 students, with each group comprising 12 lab groups of five students. Also implementing the Ethical Cycle, each group analyzed an ethical issue external co-creators were facing, developed a design solution that would address the problem while arguing why their solution was the most ethical. Each group was to create an end-product in any format, with the chosen format needing to show ethical sensitivity and be based on a sound analysis of their stakeholder’s ethics challenge. Each stakeholder worked with three lab groups, seeing the groups four times over the course of nine weeks. In the introductory meeting, the stakeholders gave a short presentation and during the subsequent meetings provided feedback based on the students proposals and questions. The course was concluded by an end-of-course poster presentation, with the lab groups showing their end-product to all their peers, tutor/coaches and stakeholders.
The discussion groups had a flipped-classroom design, with the students reading the material on ethics theories at home, while in-class time was reserved for assignments and discussions about the case and the application of the ethics models to the stakeholder’s case. During the four stakeholder-feedback meetings the lab groups discussed progress and asked questions. The students were expected to run the lab-group meetings autonomously, but for each meeting 15-min of coaching time was reserved during which their coach would provide the students with advice and feedback on the content of the assignment or their learning process (see Fig. 1).
The lab groups produced a diverse range of end-products. For example, CASA, one of the external stakeholders, presented the challenge “How can CASA use sensors in smart houses such that it respects privacy and ensures security?” Concluding that the CASA house did not pose any ethical issues if its occupants were well-informed, one group produced a promotional video that addressed autonomy and privacy in an in-depth but for laypeople understandable fashion. Another group developed Fourier transformations to change the sensor data into data that is not meaningful for future inhabitants but could still be used for acoustics analysis, thus avoiding privacy issues. The CASA team integrated both results in their further work.
Research Questions
We expected the CBL course to foster the students’ ability to make meaningful choices (autonomy), develop a sense of commitment and connection with tutors and industry partners (relatedness), tackle a complex task in their area of interest (competence), derive pleasure from the task (intrinsic motivation) and develop relevant engineering activities (identified regulation). We further anticipated a positive effect on competence development, especially with regard to the competences of problem formulation, communication, interdisciplinarity and case- and context-relevant decision-making. The first research question hence reads: “Do students in the CBL approach report higher basic needs, motivation and competence development compared to their peers in the detached approach?”.
In this exploratory inquiry, we make a first attempt at capturing the role of co-creation by analyzing the relationship between student-perceived co-creation and the other variables in the CBL group. We expected to find a strong relationship with self-reported relatedness and competence development regarding reflection, standpoint formulation, communication and interdisciplinary collaboration since these competences are thought to be specifically addressed in the CBL format. Accordingly, our second research question was: “What is the relationship between student-perceived co-creation and their self-reported basic needs, motivation and competence development?” Lastly, we sought to answer a broader, third question: “What are the implications of CBL/co-creation for ethics teaching and learning?”.
Analysis
Instruments
We used a mixed methods sequential explanatory design consisting of two distinct phases: a quantitative phase followed by qualitative phase to answer our queries (Creswell et al., 2003). The rationale for choosing this approach is that the quantitative data collection and analysis provided a general understanding of the research problem, while the qualitative data collection and analysis helped us refine and explain the quantitative results by exploring participants’ views in more depth (Creswell et al., 2003).
For research questions 1 and 2 we used the data collected from our custom-designed online student survey completed in weeks 1 and 9. Students rated all items on a 5-point Likert scale (ranging from 1 “Not at all” to 5 “Very much”), except for the item overall evaluation for which a 10-point scale was used (see Table 5 in the “Appendix”). The students judged the three items on enjoyment, relevance and overall evaluation at both timepoints while they rated all other items in week 9 only.
The three basic needs (competence, relatedness and autonomy) were assessed with a validated basic needs survey (Ilardi et al., 1993) using three items per factor. Motivation was gauged using two items per motivation type (intrinsic motivation, identified regulation and amotivation) taken from the validated Self-Regulation Questionnaire–Academics’ (Vansteenkiste et al., 2009). We initially developed eight items to gauge co-creation based upon the definition formulated by Frantzeskaki and Kabisch (2016), of which four were retained after testing their validity during informal student interviews. Taking the ACQA as a starting point, we also composed (and tested) a questionnaire to assess competence development that could serve both as an assessment tool for teacher/coaches and as an online student survey For each competence dimension, one competence was selected and modified to coincide with the ethics topic being addressed, with three items per dimension (Table 6).
For our third research interest, we collected qualitative data from the students and coaches in the CBL course. We had students answer two open questions included in the end-of-course online survey: “What did you like about the course?” and “What would you like to see changed? They moreover participated in informal 10/15-min interviews, with their experiences with the CBL and co-creation format being recorded immediately after the interview as this fosters a 'low-pressure' interaction between the researcher and student (Jorgensen, 1989). We also conducted interviews with the three coaches to learn of their experiences with the co-creation paradigm. All three had previously taught the course using a detached approach, which allowed them to compare the two methodologies.
Procedures, Samples and Factor Analyses
All students taking the detached or CBL course received an invitation by email to fill out our electronic questionnaire, asking for informed consent and informing them they would not receive compensation for their participation. For our analyses, we received an anonymized master file, in agreement with the national law and recommendations of the university’s data protection officer.
With 10.4% of the 183 students in the CBL condition responding, the response rate was low; for the detached condition it was sufficient, with 18.0% of the 316 students returning the survey (Nulty, 2008). In week 9, 30.6% and 17.7% completed the questionnaire, respectively. Gender-distribution analysis of the two samples and the ANOVA comparing responders and non-responders across departments at both timepoints showed no significant effects, indicating the absence of gender and departmental response biases. All factors had good reliability scores (Kline, 2013): the Cronbach’s alphas for the three basic needs ranged between 0.77 and 0.91, the value for co-creation was 0.74, while competence development factors were all higher than 0.81.
In Sect. 6.3, we performed t-tests to identify differences between the two teaching approaches and computed effect sizes (Cohen’s d) to weigh the relevance of the resulting differences, with values between 0.5 > d ≥ 0.2 being classified as small, those between 0.8 > d ≥ 0.5 as medium and d > 0.8 as large (Cohen, 1988). Conclusions regarding any baseline group differences could not be drawn since university regulations did not allow us to perform any measurements prior to the courses starting. This is why we ran t-tests at the end of week 1, assuming that the students could then rely on their first impressions and experiences (enjoyment, relevance and overall impression of the course). To explore the students’ views on co-creation, we computed in Sect. 6.4 Pearson’s correlations for the data obtained in the CBL group only as the students in the detached approach had no direct experience with the method. Effects were considered small when r > 0.1, medium when r > 0.3 and large when r > 0.5 (Cohen, 1988).
In Sect. 6.5, we inspected the qualitative data pertaining to the experiential curriculum using content analysis (Jennings, 2004), taking the students’ answers to the open survey questions as our primary source of information as they contained original quotes; the notes derived from the informal interviews of 51 students served as auxiliary material (see Table 4 in the “Appendix”). The data was open-coded by reading the students’ responses several times and creating tentative labels for data sequences. Next, relationships among open codes were identified and data categorized in themes. To describe the properties of each theme, we drew on words students had used. The same procedure was applied to analyze the coaches’ responses given during the interviews, with the derived data serving as the primary source of information and the notes on observations as supportive material. Separate evaluations of the supportive material did not yield any new themes.
Differences Between the Detached and the CBL Approach
As can be gleaned from Table 2, in week 1 we found no differences in enjoyment between the two approaches but in week 9 differences were significant, with a large effect size. Relevance showed no differences at either timepoint, while overall evaluation did, with an increase in means from 0.63 (p < 0.5, Cohen’s d = 0.54) to 0.95. Accordingly, the relevance factor does not inform the role of group differences prior to the course, whereas for enjoyment and overall evaluation the differences clearly increased in significance and size.
Of the factors assessed in week 9 only, the differences between the approaches were non-significant for relatedness, small for autonomy and medium for competence. The reported level of intrinsic motivation was higher (medium effect), that for identified regulation lower and for amotivation higher (large effect) in the CBL approach. There were no significant differences in self-perceived competence development, except for ACQA2_reformulate where the student/co-creators gave higher ratings, with a small effect. Thus, the two approaches had less impact on the acquisition of competences than hypothesized.
The Role of Student-Perceived Co-creation
The correlation analyses of the qualitative data showed the degree of perceived co-creation to have strong positive correlations with overall evaluation, relatedness, competence, intrinsic motivation and ACQA5_communication. (See Table 3).
Implications of CBL for Ethics Teaching and Learning
In their evaluations of the CBL approach as applied in our engineering-ethics course, the students deemed the use of the flipped-classroom design, the discussions with their coaches and stakeholders and their autonomy to be the most valuable.
Over 90% of the students interviewed reported a preference for the flipped-classroom approach, as it facilitated learning. Having to prepare the theoretical material in advance made lecture times more productive while enhancing self-regulated learning. Lecture times could now be dedicated to lab-group activities and poster presentations. As a student put it: “I enjoyed the flipped-classroom method because it permits a hands-on perspective. I still acquired the necessary knowledge, but the practical side of this course was really nice.” Since the discussion sessions adhered to the same format every week, they were judged to be somewhat repetitive towards the end of the course.
The students appreciated the time spent with their coaches as it helped them bring structure to their work. Students had anticipated they would be reporting on their progress and ask questions whereas the coaches far rather encouraged them to reflect on the overall process. The coaches were perceived as knowledgeable, warm and responsive to their needs. The coaches had supported the translation and implementation of the ethics models with the Ethical Cycle, but had also encouraged the students to look for different theories and apply them in creative ways. Rather than just remaining theories, CBL/CC had helped them turn ethics models into practical instruments to make informed design choices.
The students we interviewed were excited to work on a project with real-life stakeholders because it had enhanced their perception of the relevance of their challenge as their final report was deemed and treated as valuable to the real world. Most students did feel that the stakeholders were more of an add-on rather than true stakeholders since they had been attending their group only four times (introductory session, two feedback sessions and final poster presentation). The stakeholders concluded that it had been feasible to tutor three to six lab groups, even though it concerned first-year undergraduates who cannot be expected to bring in much technical know-how. They had been pleasantly surprised that students had come up with out-of-the-box solutions.
In addition, the students had experienced the course as ‘open’, which had raised their sense of autonomy: “It was really nice that we could come up with and develop our own project.” Towards the end of the course they did start struggling balancing the completion of the deliverable for the stakeholder and their lab reports (formal course requirement). As one student put it: “Assignments should be defined more clearly so there is not so much confusion anymore, with more details about what we are expected to do exactly.”
The coaches discerned three important differences between CBL and the detached approach. First, exemplifying the relevance of ethics was vital. Most students and external stakeholders lack the skills to reflect on real-life challenges in ethical terms. The coaches’ role in explaining how the lab assignment related to the ethics objectives of the course was critical for both students and stakeholders. The coaches and stakeholders had discussed the main issues they anticipated in advance. Although this narrowed down the students’ working scope to some extent, it did make tutoring more manageable for the coaches. Evidently, the latitude of the challenges had been sufficient since six groups completing the same assignment generated six completely different end-products. Moreover, when lab groups noted complementarity, they often started working together.
Ambiguity in CBL is crucial as a tool to challenge students. At the same time, first-year undergraduates in engineering need clear structure and adequate support. Ambiguity of the challenge and structure of the assignment do not have to contradict each other but can strengthen each other (Bombaerts et al., 2018). Methodologically, structure can still be open and abstract. The coaches provided structure by introducing the Ethical cycle, offering the students a step-by-step approach to solving the challenge posed. Additionally, the introductory lecture (without ethical content) already used the flipped-classroom design, giving the students the opportunity to familiarize themselves with the method. The group meetings always had the same (open) format, which predictability offered the students additional structure, while the weekly feedback meetings were key in addressing the issues the students encountered along the way. Although requiring a serious time investment, the coaches felt the additional four hours of student-contact time were well worth their effort.
Lastly, the coaches indicated that CBL requires much more work, stressing that organizing and implementing the course was an intense process, mentioning, among other aspects, that finding relevant external stakeholders and communicating and integrating the ethics challenges in the stakeholders’ queries was demanding. Universities that are considering introducing CBL need to be aware that, besides the time necessary to develop or modify course content, at the practical level the format also requires considerable investment of time and resources. Thus tutors/coaches need to allot additional time to prepare the seminar rooms for lab-group work (e.g., arranging tables to facilitate active student participation and interaction, providing equipment and material for the preparation of posters, etc.). Our coaches estimated they had invested approximatively 60% more time (prep and contact time) compared to the detached course approach, which is substantial but comparable with other practicum classes. With class time being devoted to discussing the application of theories to topics close to the PhD student-tutor’s expertise, the CBL format is particularly suitable for mentoring and tutoring by PhD students.
Limitations
Although we used a sound evidence-informed approach with response rates and biases, validated questionnaires and strict statistical methods, we faced several challenges in measuring the impact of the two course approaches.
Firstly, our baseline group analysis lacked power as the CBL/CC sample in week 1 included too few respondents to be significant. Also, the timepoint (one week into the course) allowed us to only assess three items. Secondly, the Howthorne effect (Adair, 1984) may have played a role as both the students and coaches were aware that the pilot was more closely monitored, potentially inducing them to consciously or unconsciously modify facets of their behavior. Thirdly, the literature on challenge-based or co-creative learning is sparse, rendering it difficult to clearly delineate the various formats given that many detached learning approaches also actively involve students (“student-activating” instruction, problem-based learning). To differentiate the approaches, well-defined delineations are warranted. Lastly, since we tested the effects of co-creation-based learning for one course at our university only, our results need to be replicated in other settings and training programs.
Conclusions
Taking these limitations into account, we feel justified in inferring several conclusions from our findings on the use of co-creative common micro cases in engineering-ethics instruction. Students’ resistance to ethics instruction is highlighted as a major challenge in engineering education (Harding et al., 2009; Romkey, 2015) as well as in the co-creative learning paradigm (Iversen & Pedersen, 2017, p. 21), with students being characterized as showing “disinterest, resistance, and difficulty learning about ethics and societal impact” (Polmear et al., 2018, p. 9). Our findings for amotivation and identified regulation were indeed the opposite to what we had expected. Nevertheless, we propose that CBL/CC is a suitable didactic method to confront engineering students with their resistance to the challenges of the “real world” and to encourage them to venture from their comfort zones. The need for clarity in instruction the students expressed coincides with the findings of Bissett-Johnson and Radcliffe (2021, p. 21), who note that “clear guidance and mentoring were required to increase the chances that learning activities would indeed help the student to find a creative answer.”
CBL and the co-creation format in particular require academic staff to “adapt their current teaching practice, and learn to adopt more relational approaches to teaching that are open, collaborative, dialogic, and democratic” (Bovill, 2020, p. 1034). The approach also involves more coaching and tutors with the right qualifications, all adding to the workload. Adequate support for educational staff hence is a prerequisite for CBL, as is employee retention. According to Bissett-Johnson and Radcliffe (2021, p. 16) by running lab-group projects more frequently, tutors become more adept at directing and coaching students, with their familiarity with themes/topics, clients and contexts increasing each year.
CBL requires teaching institutions to formulate their vision on the relevance and objectives of ethics education and convey how staff will be supported in their collaboration with external stakeholders and how the university’s ecosystem will provide for the approach (Steiner et al., 2018). The university’s recommendations for the entire academic curriculum can then inform decisions on its use in the engineering ethics program.
Despite the various empirical challenges and imperfections, the students and coaches participating in our study were enthusiastic about the co-creative design. Using a mixed methods design, we showed that, overall, CBL was more effective in meeting most of the educational goals set for the course than the detached format, with CBL fostering both the instructors’ educational and research objectives and the students’ basic needs, intrinsic motivation and communication skills. Our results are in line with studies examining student motivation in similar case approaches to teaching engineering ethics in higher education (Bairaktarova & Woodcock, 2017; Bucciarelli, 2008; Lynch & Kline, 2000; Martin et al., 2019; Wilson, 2013; Winner, 1986). Moreover, CBL can overcome two drawbacks associated with other case-based formats, of not providing sufficient “skill development at the two extremes, of problem finding and implementation” (Aldridge, 1994: 235) and not inducing a sense of ownership (Nakamura et al., 2011; Williams & Figueiredo, 2014). Based on the results presented, we conclude that in the context of teaching engineering ethics a CBL program in which students work as co-creators on behalf of and together with external stakeholders is promising, warranting further development and evaluation.
To help fill the gap in empirical knowledge on the topic (Yadav & Barry, 2009; Martin et al., 2021), we feel we have added to the evidence supporting the effectiveness of case-based approaches in engineering-ethics instruction. The proposed approach to evaluating the effectiveness of case studies in ethics instruction merits further investigation in the field of engineering education.
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Acknowledgements
The empirical research performed for this paper was part of the SCALINGS (“Scaling up Co-creation: Avenues and Limits for Integrating Society in Science and Innovation research project”), funded by the European Union’s Horizon 2020 research and innovation programme under Grant Agreement 788359. We especially wish to thank our colleagues for their valuable time and insights and the students who took part in this research study. We thank Mandi Astola for her insightful comments on an earlier version of this paper.
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Bombaerts, G., Doulougeri, K., Tsui, S. et al. Engineering Students as Co-creators in an Ethics of Technology Course. Sci Eng Ethics 27, 48 (2021). https://doi.org/10.1007/s11948-021-00326-5
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DOI: https://doi.org/10.1007/s11948-021-00326-5