Faculdade de Psicologia, University Lusofona of Humanities and Technologies, Ares do Pinhal.
Psychol Addict Behav. 2010 Jun;24(2):355-9. doi: 10.1037/a0019080.
The Stages of Change Readiness and Treatment Eagerness Scale (SOCRATES) assesses motivation for treatment in the drug-dependent population. The development of adequate measures of motivation is needed in order to properly understand the role of this construct in rehabilitation. This study probed the psychometric properties of the SOCRATES in the Portuguese population by means of the Rasch Rating Scale Model, which allows the conjoint measurement of items and persons. The participants were 166 substance abusers under treatment for their addiction. Results show that the functioning of the five response categories is not optimal; our re-analysis indicates that a three-category system is the most appropriate one. By using this response category system, both model fit and estimation accuracy are improved. The discussion takes into account other factors such as item format and content in order to make suggestions for the development of better motivation-for-treatment scales.
改变阶段准备和治疗渴望量表（SOCRATES）评估药物依赖人群的治疗动机。为了正确理解该构念在康复中的作用，需要开发足够的动机衡量标准。本研究通过 Rasch 评分量表模型探讨了 SOCRATES 在葡萄牙人群中的心理测量学特性，该模型允许项目和人员的联合测量。参与者为 166 名正在接受治疗的物质滥用者。结果表明，五个反应类别功能不是最优的；我们的重新分析表明，三类别系统是最合适的。通过使用这种反应类别系统，模型拟合度和估计准确性都得到了提高。讨论考虑了其他因素，如项目格式和内容，以便为开发更好的治疗动机量表提出建议。
