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This self-report measure assesses beliefs about personal and external control in the context of health and illness. The Illness Locus of Control Questionnaire provides a brief profile of perceived responsibility for health outcomes, which may inform clinical case conceptualization and treatment planning.
Developed by Kenneth A. Wallston and Barbara S. Wallston, it includes 18 items and typically takes about 4 minutes to complete. Item responses are used to characterize the individual’s orientation toward internal control versus reliance on chance or powerful others, which can be relevant to engagement with medical recommendations and coping behaviors.
The Illness Locus of Control Questionnaire is intended for use as an adjunct to clinical assessment and research when understanding health-related control beliefs is clinically salient.