PPC-R™

The PPC–R is available is MHS Quikscore^™ format. This paper-and-pencil format is designed for easy recording, scoring and profiling of responses. No scoring templates are necessary; the respondent's answers automatically transfer through the to the concealed scoring page. The entire scoring process typically takes less than 15 minutes. The PPC–R yields seven raw scores including a Total Score, and converts raw scores into T-scores and corresponding percentile ranks. The results are easy to interpret by comparing a particular student's ratings to student population norms.

Reliability

Internal consistency analysis on the PPC–R scales demonstrated alpha levels above. 90 for most scales based on general education students; internal consistency was only slightly lower for students with learning disabilities enrolled in special education. Inter-rater reliability is also high based on two independent studies of the PPC–R.

Validity

Data suggests that the PPC–R scores have adequate validity for use in educational settings. Specifically, the content domain of psychological processing is well represented by the test items, the factorial structure of the PPC–R was generally supported, and the test scores relate toe measures of cognitive processing abilities and academic achievement in theoretically expected ways.

The normative data sample for the PPC–R was expanded and updated throughout 2006 and 2007. Now the PPC–R normative sample is national and includes representation from 10 states within the United States. Students from both general education classrooms (2,107 students) and special education classrooms (606 students) were included in the new normative sample.