Expectancy/credibility change as a mediator of cognitive behavioral therapy for generalized anxiety disorder: Mechanism of action or proxy for symptom change?

Michelle Gayle Newman, Aaron J. Fisher

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)245-261
Number of pages17
JournalInternational Journal of Cognitive Therapy
Volume3
Issue number3
DOIs
StatePublished - Dec 1 2010

Fingerprint

Cognitive Therapy
Proxy
Anxiety Disorders
Anxiety
Growth
Critical Period (Psychology)

All Science Journal Classification (ASJC) codes

  • Experimental and Cognitive Psychology

Cite this

@article{c90113fe087f43ed919bdfaf59aaa2e8,
title = "Expectancy/credibility change as a mediator of cognitive behavioral therapy for generalized anxiety disorder: Mechanism of action or proxy for symptom change?",
abstract = "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.",
author = "Newman, {Michelle Gayle} and Fisher, {Aaron J.}",
year = "2010",
month = "12",
day = "1",
doi = "10.1521/ijct.2010.3.3.245",
language = "English (US)",
volume = "3",
pages = "245--261",
journal = "International Journal of Cognitive Therapy",
issn = "1937-1209",
publisher = "Guilford Publications",
number = "3",

}

TY - JOUR

T1 - Expectancy/credibility change as a mediator of cognitive behavioral therapy for generalized anxiety disorder

T2 - Mechanism of action or proxy for symptom change?

AU - Newman, Michelle Gayle

AU - Fisher, Aaron J.

PY - 2010/12/1

Y1 - 2010/12/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=79953738364&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79953738364&partnerID=8YFLogxK

U2 - 10.1521/ijct.2010.3.3.245

DO - 10.1521/ijct.2010.3.3.245

M3 - Article

C2 - 21132075

AN - SCOPUS:79953738364

VL - 3

SP - 245

EP - 261

JO - International Journal of Cognitive Therapy

JF - International Journal of Cognitive Therapy

SN - 1937-1209

IS - 3

ER -