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Sandwich feedback: The empirical evidence of its effectiveness

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Abstract

This experiment tests the effectiveness of "sandwich" feedback. 91 university students solved 12 mathematical problems from the secondary-school curriculum. After the time limit, we assigned them randomly to one of three possible treatments. One group received corrective computer-administrated feedback, describing the mistakes with their methods and solutions. The second group received sandwich feedback, consisting of the same corrective part presented between two general positive statements unrelated to the participants' actual performance. The third group did not receive any feedback. Afterwards, the participants had 10 minutes to prepare for the second set of similar problems. Participants who received sandwich feedback utilized more time on preparation and solved more problems from the second set than the participants from the other two groups. This study provides only partial evidence for the effectiveness of sandwich feedbacks as it tested the effect under one specific condition using computer-mediated written feedback on math test. Further replications are needed to test the effect under various conditions, to test various forms of sandwich feedback, to explain the mechanism of sandwich feedback and to show whether the effect of sandwich feedback is caused by the specific sequence of feedback components or by mere presence of positive statements.
Sandwich feedback: The empirical evidence of its effectiveness
Jakub Prochazkaa,b*, Martin Ovcaria and Michal Durinika,c
aDepartment of Corporate Economy, Masaryk University, Brno, Czech Republic;
bDepartment of Psychology, Masaryk University, Brno, Czech Republic; cMacquarie
Graduate School of Management, Sydney, Australia
*Corresponding author. Department of Corporate Economy, Faculty of Economics and
Administration, Masaryk University, Lipova 41a, 602 00 Brno, Czech Republic,
jak.prochazka@mail.muni.cz
Abstract
This experiment tests the effectiveness of "sandwich" feedback. 91 university
students solved 12 mathematical problems from the secondary-school curriculum. After
the time limit, we assigned them randomly to one of three possible treatments. One
group received corrective computer-administrated feedback, describing the mistakes
with their methods and solutions. The second group received sandwich feedback,
consisting of the same corrective part presented between two general positive
statements unrelated to the participants’ actual performance. The third group did not
receive any feedback. Afterwards, the participants had 10 minutes to prepare for the
second set of similar problems. Participants who received sandwich feedback utilized
more time on preparation and solved more problems from the second set than the
participants from the other two groups. This study provides only partial evidence for the
effectiveness of sandwich feedbacks as it tested the effect under one specific condition
using computer-mediated written feedback on math test. Further replications are needed
to test the effect under various conditions, to test various forms of sandwich feedback,
to explain the mechanism of sandwich feedback and to show whether the effect of
sandwich feedback is caused by the specific sequence of feedback components or by
mere presence of positive statements.
Keywords: feedback, sandwich feedback, task performance, experiment
How to cite:
Prochazka, J., Ovcari, M., Durinik, M. (2020), Sandwich feedback: The empirical
evidence of its effectiveness, Learning and Motivation, 71, 101649,
https://doi.org/10.1016/j.lmot.2020.101649.
Full-text for subscribers (please use this link if you have institutional subscription):
https://doi.org/10.1016/j.lmot.2020.101649
Free full-text at Elsevier (for 50 downloads only, valid until August 07, 2020):
https://authors.elsevier.com/a/1bFui5SouyD1r
References
Bangert-Drowns, R. L., Kulik, C. L. C., Kulik, J. A., & Morgan, M. (1991). The
instructional effect of feedback in test-like events. Review of Educational Research,
61, 213-238.
Belludi, N. (2008a). The compliment sandwich feedback technique. Right Attitudes
[online]. Retrieved from http://www.rightattitudes.com/2008/02/20/sandwich-
feedback-technique/
Belludi, N. (2008b). The compliment sandwich feedback technique is ineffective. Right
Attitudes [online]. Retrieved from
http://www.rightattitudes.com/2008/02/22/sandwich-feedback-technique-ineffective/
Bienstock, J. L., Katz, N. T., Cox, S. M., Hueppchen, N., Erickson, S., & Puscheck, E.
E. (2007). To the point: medical education reviewsproviding feedback. American
Journal of Obstetrics and Gynecology, 196, 508-513.
Cantillon, P., & Sargeant, J. (2008). Giving feedback in clinical settings. Bmj, 337,
1292-1294.
Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences. Hillsdale, NJ:
Lawrence Erlbaum Associates.
Davies, D., & Jacobs, A. (1985). "Sandwiching" complex interpersonal feedback. Small
Group Behavior, 16, 387-396.
Docheff, D. M. (1990). The feedback sandwich. Journal of Physical Education,
Recreation & Dance, 61(9), 17-18.
Dohrenwend, A. (2002). Serving up the feedback sandwich. Family Practice
Management, 9(10), 43-50.
Earley, P. C. (1988). Computer-generated performance feedback in the magazine-
subscription industry. Organizational Behavior and Human Decision Processes, 41,
50-64.
Greiner B. (2015), Subject pool recruitment procedures: Organizing experiments with
ORSEE, Journal of the Economic Science Association, 1, 114-125.
Hackman, J. R., & Oldham, G. R. (1974). The Job Diagnostic Survey: An Instrument
for the Diagnosis of Jobs and the Evaluation of Job Redesign Projects. New Haven:
Yale University.
Hastorf, A. H., Polefka, J., & Schneider, D. J. (1970). Person Perception. Addison-
Wesley: Michigan University.
Hattie, J., & Timperley, H. (2007). The power of feedback. Review of Educational
Research, 77,: 81-112.
Hedeker, D., & Gibbons, R. D. (2006). Longitudinal Data Analysis. Hoboken, NJ:
Wiley.
Henley, A. J., & DiGennaro Reed, F. D. (2015). Should you order the feedback
sandwich? Efficacy of feedback sequence and timing. Journal of Organizational
Behavior Management, 35, 321-335.
Ionescu, G. G., & Negruşa, A. (2009). Mary Kay Ash, the greatest female entrepreneur
in American history and business ethics. Management, 4(4), 35-48.
James, I. A. (2015). The rightful demise of the sh* t sandwich: providing effective
feedback. Behavioural and Cognitive Psychotherapy, 43, 759-766.
Kanfer, R., & Ackerman, P.L. (1989). Motivation and cognitive abilities: An
integrative/aptitude-treatment interaction approach to skill acquisition. Journal of
Applied Psychology, 74, 657-690.
Kazemipour, S. (2014). Comparing the outcomes of two types of corrective feedback on
EFL classes’ final exam. Procedia - Social and Behavioral Sciences, 98, 876-881.
Kluger, A. N., & De Nisi, A. (1996). The effects of feedback interventions on
performance: a historical review, a meta-analysis, and a preliminary feedback
intervention theory. Psychological Bulletin, 119, 254-284.
Kulmala, D. (2011). To increase learner achievement serve feedback sandwiches.
Faculty Focus. [online] Retrieved from:
http://www.facultyfocus.com/articles/teaching-and-learning/to-increase-learner-
achievement-serve-feedback-sandwiches/
Levant, B., Zückert, W., & Paolo, A. (2018). Post-exam feedback with question
rationales improves re-test performance of medical students on a multiple-choice
exam. Advances in Health Sciences Education, 23(5), 995-1003.
Lakens, D. (2017). Equivalence tests: a practical primer for t tests, correlations, and
meta-analyses. Social Psychological and Personality Science, 8(4), 355-362.
Muis, K. R., Ranellucci, J., Franco, G. M., & Crippen, K. J. (2013). The interactive
effects of personal achievement goals and performance feedback in an undergraduate
science class. The Journal of Experimental Education, 81(4), 556-578.
Merrill, J. A. (1985). Levels of questioning and forms of feedback: Instructional factors
in courseware design. Doctoral dissertation, The Ohio State University.
Muis, K. R., Ranellucci, J., Trevors, G., & Duffy, M. C. (2015). The effects of
technology-mediated immediate feedback on kindergarten students' attitudes,
emotions, engagement and learning outcomes during literacy skills development.
Learning and Instruction, 38, 1-13.
Nease, A. A., Mudgett, B. O., & Quiñones, M. A. (1999). Relationships among
feedback sign, self-efficacy, and acceptance of performance feedback. Journal of
Applied Psychology, 84, 806-814.
Parkes, J., Abercrombie, S., & McCarty, T. (2013). Feedback sandwiches affect
perceptions but not performance. Advances in Health Sciences Education, 18, 397-
407.
Prochazka, J., Ovcari, M., Durinik, M. (2020), Sandwich feedback: The empirical
evidence of its effectiveness , Mendeley Data, v3.
http://dx.doi.org/10.17632/ch5jxrnpxm.3
Rakoczy, K., Harks, B., Klieme, E., Blum, W., & Hochweber, J. (2013). Written
feedback in mathematics: Mediated by students' perception, moderated by goal
orientation. Learning and Instruction, 27, 63-73.
Ramaprasad, A. (1983). On the definition of feedback. Systems Research and
Behavioral Science, 28, 4-13.
Robson, L. (2014). Providing sandwiches: optimising feedback at the education picnic.
Brookes E-Journal of Learning and Teaching, 6(2).
Schwarz, R. (2013). The “Sandwich Approach” undermines your feedback. Harvard
Business Review [online]. Retrieved from: https://hbr.org/2013/04/the-sandwich-
approach-undermin/
Sinha, N., & Glass, A. L. (2015). Delayed, but not immediate, feedback after multiple-
choice questions increases performance on a subsequent short-answer, but not
multiple-choice, exam: Evidence for the dual-process theory of memory. The Journal
of General Psychology, 142(2), 118-134.
Von Bergen, C. W., Bressler, M. S., & Campbell, K. (2014). The sandwich feedback
method: not very tasty. Journal of Behavioral Studies in Business, 7, 1-13.
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