Psychometric evaluation of a "standardized client" procedure with trainee counsellors

The validity and reliability of a "standardized client" procedure for assessing the impact of counsellor-trainees' behaviour upon client-perceived rapport was investigated within 22 counselling interviews. A typical client was trained to present the same genuine concern consistently across all interuiews, and to make minute-by-minute in-session ratings of experienced rapport. Data were collected on internal consistency, test-retest reliability, face validity, content, construct and concurrent validity via usual procedures and blind evaluations from professionals in the field. All common psychometric requirements were satisfied. Limitations of this procedure are discussed, and implications for use of "standardized client" ratings to gather data on the rapport-enhancing effects of specific counsellor behaviours are also raised.