Schumann Anja, Kohlmann Thomas, Rumpf Hans-Jürgen, Hapke Ulfert, John Ulrich, Meyer Christian
Institute of Epidemiology and Social Medicine, Ernst-Moritz-Arndt-University Greifswald, Germany.
Ann Behav Med. 2005 Aug;30(1):12-20. doi: 10.1207/s15324796abm3001_2.
This study examined the pattern, direction, and magnitude of longitudinal relationships among the constructs involved in the Transtheoretical Model (TTM).
The goal was to explore within-TTM relationships to create an integrated structural model that adequately represents the change process.
Data were collected as part of a representative general adult population study in Germany. A total of 688 smokers in the precontemplation and contemplation stages of change were assessed two times, 6 months apart, with respect to the TTM constructs. Structural equation modeling was used and a step approach was employed to evaluate the relationships between cognitive-affective processes, behavioral processes, the pros and cons of smoking, and self-efficacy, stratified for baseline stage of change.
The model-building process resulted in two final structural equation models detailing longitudinal TTM relationships for precontemplation and contemplation. A structural invariance test showed that the precontemplation model also held for the contemplation sample and visa versa.
The TTM constructs can be integrated in a longitudinal structural model. The findings provide empirical support for specific relationships that are posited in the TTM framework. However, differing relationships between TTM constructs for precontemplation and contemplation could not be established.
本研究考察了跨理论模型（TTM）中各构念之间纵向关系的模式、方向和程度。
目标是探索TTM内部关系，以创建一个能充分体现变化过程的综合结构模型。
数据收集于德国一项具有代表性的普通成年人群研究。共有688名处于未考虑改变阶段和考虑改变阶段的吸烟者，就TTM构念进行了两次评估，每次评估间隔6个月。采用结构方程模型，并采用逐步法评估认知情感过程、行为过程、吸烟利弊和自我效能之间的关系，按改变的基线阶段进行分层。
模型构建过程产生了两个最终的结构方程模型，详细说明了未考虑改变阶段和考虑改变阶段的纵向TTM关系。结构不变性检验表明，未考虑改变阶段的模型也适用于考虑改变阶段的样本，反之亦然。
TTM构念可整合到一个纵向结构模型中。研究结果为TTM框架中假设的特定关系提供了实证支持。然而，未考虑改变阶段和考虑改变阶段的TTM构念之间的不同关系未能确立。
