Reliabilities were sought for the two most frequently used imagery assessment devices, the Vividness of Imagery Scale of Betts Questionnaire Upon Mental Imagery and Gordon Test of Visual Imagery Control. Reliability was assessed by means of test-retest and Cronbach's Coefficient Alpha using 147 subjects. Betts scale test-retest reliabilities ranged from .72 to .75, and alphas ranged from .90 to .94. Gordon scale test-retest reliabilities ranged from .81 to .86 and alphas from .53 to .74. Testing implications are discussed.
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