Department of Family Medicine, McMaster University, Hamilton, Ontario, Canada.
Med Educ. 2012 Apr;46(4):409-16. doi: 10.1111/j.1365-2923.2011.04196.x.
Video-based observational practice can extend simulation-based learning outside the training space. This study explores the value of collaborative feedback provided during observational practice to the acquisition of clinical skills.
Nursing students viewed a video demonstrating the proper ventrogluteal injection technique before performing a videotaped pre-test trial on a simulator. They were then assigned randomly to one of three observational practice groups: a group that observed the expert demonstration (EO group); a group that viewed the expert demonstration, self-assessed their individual pre-test and contrasted their self-assessments with expert feedback (ESO group), and a group that observed the expert demonstration, self-assessed and contrasted their assessments with those of an expert, and formed a community that engaged in peer-to-peer feedback (ESPO group). The observation of all videos, the provision of assessments and all networking occurred via an Internet-mediated network. After 2 weeks, participants returned for post-tests and transfer tests.
The pre-test-post-test analyses revealed significant interactions (global rating scale: F((2,22)) =4.00 [p =0.033]; checklist: F((2,22)) =4.31 [p =0.026]), which indicated that post-test performance in the ESPO group was significantly better than pre-test performance. The transfer analyses revealed main effects for both the global rating scale (F((2,23)) =6.73; p =0.005) and validated checklist (F((2,23)) =7.04; p =0.004) measures. Participants in the ESPO group performed better on the transfer test than those in the EO group.
The results suggest that video-based observational practice can be effective in extending simulation-based learning, but its effectiveness is mediated by the amount of time the learner spends engaged in the practice and the type of learning activities the learner performs in the observational practice environment. We speculate that increasing collaborative interactivity supports observational learning by increasing the extent to which the educational environment can accommodate learners' specific needs.
基于视频的观察实践可以将基于模拟的学习扩展到培训空间之外。本研究探讨了在观察实践中提供协作反馈对临床技能获取的价值。
护理学生在观看视频演示正确的臀肌注射技术之前,在模拟器上进行了录像前测试。然后,他们被随机分配到三个观察实践组之一:一个观察专家演示的组(EO 组);一个观看专家演示、自我评估个人前测并将自我评估与专家反馈进行对比的组(ESO 组),以及一个观察专家演示、自我评估并将自己的评估与专家的评估进行对比的组,并形成一个进行同伴反馈的社区的组(ESPO 组)。所有视频的观察、评估的提供以及所有网络活动都通过互联网中介网络进行。两周后,参与者返回进行后测和转移测试。
预测试后测试分析显示出显著的交互作用(总体评分量表:F((2,22)) =4.00 [p=0.033];检查表:F((2,22)) =4.31 [p=0.026]),这表明 ESPO 组的后测表现明显优于前测表现。转移分析显示出总体评分量表(F((2,23)) =6.73;p=0.005)和验证检查表(F((2,23)) =7.04;p=0.004)的主要效果。与 EO 组相比,ESPO 组的参与者在转移测试中的表现更好。
结果表明,基于视频的观察实践可以有效地扩展基于模拟的学习,但它的有效性受到学习者在实践中花费的时间和学习者在观察实践环境中执行的学习活动类型的影响。我们推测,增加协作互动性可以通过增加教育环境适应学习者特定需求的程度来支持观察学习。