In: Statistics and Probability
The center for substance abuse treatment is investigating outcome measures for use in programs for persons with substance use difficulties. One of the measures is the Individual Assessment Profile Several studies have been conducted on the instrument, and reliability estimates for items, using internal consistency (alpha), ranged from 0 to 99. A second instrument is the Recovery Altitude and Treatment Evaluation (RAATE). Internal consistency reliabilities (alpha) ranged from 63 to 78. The Texas Christian University Client Evaluation of Self and Treatment is the third instrument under investigation, internal consistency reliabilities (alpha) range from 0.58 to 0.96. What measures would you recommend? Why? What measures would you have concerns about? Why?