The development of a locus of control measure predictive of injured athletes' adherence to treatment.

The Sports Rehabilitation Locus of Control (SRLC) scale was developed to facilitate study of the behaviour of athletes recovering from injury. The SRLC was built specifically to assess locus of control in injured athletes by adapting selected items from the Multidimensional Health Locus of Control (MHLC) questionnaire developed by Wallston, Wallston, & DeVellis (1978), and in accordance with their rationale for the construction of domain-specific LOC scales. The resultant locus of control measures (internal, powerful others, and chance) were administered (along with the MHLC) to a sample of 145 sports-injured athletes. Good internal consistency (alphas ranged from .72 to .79) and test-retest reliability (correlations ranged from .75 to .85) was shown by the SRLC scales, and the pattern of inter-scale correlations supported the three-factor conceptualisation of locus of control on which the SRLC was based. In the subsequent initial validation study, the relationship between SRLC scale scores and adherence to treatment was tested with a sample of injured athletes. Encouragingly, internality was positively associated p<.05 with treatment adherence.