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COMPARATIVE STUDY
JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL
Immediate Auditory Feedback is Superior to Other Types of Feedback for Basic Surgical Skills Acquisition.
Journal of Surgical Education 2017 November
OBJECTIVE: We examined the effect of timing and type of feedback on medical students' knot-tying performance using visual versus auditory and immediate versus delayed feedback. We hypothesized that participants who received immediate auditory feedback would outperform those who received delayed and visual feedback.
METHODS: Sixty-nine first- and second-year medical students were taught to tie 2-handed knots. All participants completed 3 pretest knot-tying trials without feedback. Participants were instructed to tie a knot sufficiently tight to stop the "blood" flow while minimizing the amount of force applied to the vessel. Task completion time was not a criterion. Participants were stratified and randomly assigned to 5 experimental groups based on type (auditory versus visual) and timing (immediate versus delayed) of feedback. The control group did not receive feedback. All groups trained to proficiency. Participants completed 3 posttest trials without feedback.
RESULTS: There were fewer trials with leak (p < 0.01) and less force applied (p < 0.01) on the posttest compared to the pretest, regardless of study group. The immediate auditory feedback group required fewer trials to achieve proficiency than each of the other groups (p < 0.01) and had fewer leaks than the control, delayed auditory, and delayed visual groups (p < 0.02).
CONCLUSIONS: In a surgical force feedback simulation model, immediate auditory feedback resulted in fewer training trials to reach proficiency and fewer leaks compared to visual and delayed forms of feedback.
METHODS: Sixty-nine first- and second-year medical students were taught to tie 2-handed knots. All participants completed 3 pretest knot-tying trials without feedback. Participants were instructed to tie a knot sufficiently tight to stop the "blood" flow while minimizing the amount of force applied to the vessel. Task completion time was not a criterion. Participants were stratified and randomly assigned to 5 experimental groups based on type (auditory versus visual) and timing (immediate versus delayed) of feedback. The control group did not receive feedback. All groups trained to proficiency. Participants completed 3 posttest trials without feedback.
RESULTS: There were fewer trials with leak (p < 0.01) and less force applied (p < 0.01) on the posttest compared to the pretest, regardless of study group. The immediate auditory feedback group required fewer trials to achieve proficiency than each of the other groups (p < 0.01) and had fewer leaks than the control, delayed auditory, and delayed visual groups (p < 0.02).
CONCLUSIONS: In a surgical force feedback simulation model, immediate auditory feedback resulted in fewer training trials to reach proficiency and fewer leaks compared to visual and delayed forms of feedback.
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