Development of an Instrument to Assess Problem Behavior in First Grade Students Prenatally Exposed to Cocaine. Part II: Validation.

In Part I, the initial development of a preliminary tool, the PROBS-14, was reported. The tool was developed and initially tested through a consensus process that tapped the perceptions of early education teachers. Concurrent validity between the PROBS-14 and the Conners' Teacher Rating Scale (CTRS) was established with factor analysis, yielding a hyperactivity-conduct factor, composed of PROBS items and all but two of the CTRS subscales, and a central processing factor, composed of PROBS items and the remaining CTRS scales.