Center for Research and Development of Education, UMC Utrecht, The Netherlands.
Adv Health Sci Educ Theory Pract. 2011 May;16(2):183-95. doi: 10.1007/s10459-010-9253-4. Epub 2010 Oct 16.
The Strength of Motivation for Medical School (SMMS) questionnaire is designed to determine the strength of motivation of students particularly for medical study. This research was performed to establish the validity evidence for measuring strength of motivation for medical school. Internal structure and relations to other variables were used as the sources of validity evidence. The SMMS questionnaire was filled out by 1,494 medical students in different years of medical curriculum. The validity evidence for the internal structure was analyzed by principal components analysis with promax rotation. Validity evidence for relations to other variables was tested by comparing the SMMS scores with scores on the Academic Motivation Scale (AMS) and the exhaustion scale of Maslach Burnout Inventory-Student Survey (MBI-SS) for measuring study stress. Evidence for internal consistency was determined through the Cronbach's alpha for reliability. The analysis showed that the SMMS had a 3-factor structure. The validity in relations to other variables was established as both, the subscales and full scale scores significantly correlated positively with the intrinsic motivation scores and with the more autonomous forms of extrinsic motivation, the correlation decreasing and finally becoming negative towards the extrinsic motivation end of the spectrum. They also had significant negative correlations with amotivation scale of the AMS and exhaustion scale of MBI-SS. The Cronbach's alpha for reliability of the three subscales and full SMMS scores was 0.70, 0.67, 0.55 and 0.79. The strength of motivation for medical school has a three factor structure and acceptable validity evidence was found in our study.
医学生动机强度问卷（SMMS）旨在确定学生，特别是医学学习的动机强度。本研究旨在建立测量医学生动机强度的效度证据。内部结构和与其他变量的关系是效度证据的来源。SMMS 问卷由不同医学课程阶段的 1494 名医学生填写。采用主成分分析和 promax 旋转对内部结构的效度证据进行分析。通过比较 SMMS 分数与学术动机量表（AMS）和 Maslach 职业倦怠量表-学生调查（MBI-SS）的倦怠量表的分数，测试与其他变量的关系的效度证据，以衡量学习压力。通过 Cronbach's alpha 进行可靠性测试来确定内部一致性的证据。分析表明，SMMS 具有 3 因素结构。与其他变量的关系的有效性得到了确立，因为子量表和全量表得分与内在动机得分以及更自主的外在动机形式呈显著正相关，相关性降低，最终对外在动机的范围呈负相关。它们还与 AMS 的动机量表和 MBI-SS 的倦怠量表呈显著负相关。三个子量表和全 SMMS 得分的 Cronbach's alpha 可靠性为 0.70、0.67、0.55 和 0.79。医学生的动机强度具有三因素结构，在本研究中发现了可接受的效度证据。
