Evaluation of Pertinent Sources of Volunteer Bias in Behavior Therapy Research.

Cash, Thomas F.; Janda, Louis H.

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Peer reviewed

ERIC Number: EJ156819

Record Type: CIJE

Publication Date: 1977

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Evaluation of Pertinent Sources of Volunteer Bias in Behavior Therapy Research

Cash, Thomas F.; Janda, Louis H.

Journal of Consulting and Clinical Psychology, 45, 2, 337-338, Apr 77

The present study evaluated the likelihood that volunteers for behavior therapy research are self-selected on variables known to moderate therapeutic outcomes. Compared with nonvolunteers, volunteers reported greater anxiety and externality. Among speech-anxious subjects, however, no volunteer bias was observed. (Author)

Descriptors: Anxiety, Behavior Modification, Behavior Patterns, Bias, Interaction Process Analysis, Locus of Control, Psychological Characteristics, Research Projects, Student Volunteers

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