Newman Michelle G, Fisher Aaron J
Pennsylvania State University.
Int J Cogn Ther. 2010 Sep;3:245-261. doi: 10.1521/ijct.2010.3.3.245.
Examined the mediating effect of changes in expectancy/credibility from sessions 4-7 of 14-session cognitive and behavioral therapy for generalized anxiety disorder (GAD). In 76 adults with primary GAD, we predicted that expectancy/credibility would change significantly from sessions 4-7, that degree of change in expectancy/credibility would predict degree of reliable change at posttreatment, and that changes in expectancy/credibility would mediate the relationship between pretreatment severity and change at posttreatment. In support of the hypotheses, a latent growth model revealed significant increases in expectancy/credibility over the critical period. In addition, baseline GAD severity, expectancy/credibility intercept, and rate of change in expectancy/credibility all positively predicted degree of reliable change at posttreatment. Rate of change in expectancy/credibility during the critical period partially mediated the effect of baseline GAD severity, accounting for 38% of the variance in this relationship. This effect was not accounted for by preceding or concurrently changing anxiety levels.
研究了针对广泛性焦虑症（GAD）的14节认知行为疗法中第4至7节的期望/可信度变化的中介作用。在76名患有原发性GAD的成年人中，我们预测期望/可信度在第4至7节会有显著变化，期望/可信度的变化程度将预测治疗后可靠变化的程度，并且期望/可信度的变化将介导治疗前严重程度与治疗后变化之间的关系。为支持这些假设，一个潜在增长模型显示在关键时期期望/可信度显著增加。此外，基线GAD严重程度、期望/可信度截距以及期望/可信度的变化率均正向预测治疗后可靠变化的程度。关键时期期望/可信度的变化率部分介导了基线GAD严重程度的影响，占该关系中38%的方差。这种影响并非由先前或同时变化的焦虑水平所解释。
