Insight Psychometrics Technical Manual - Canadian Test Centre

Table of contentsTable of contents...............................................................................................................iTable of figures ................................................................................................................iiGeneral description .........................................................................................................1Development steps...........................................................................................................4Calibration, equating, scaling.........................................................................................7Norming and reporting..................................................................................................11Statistical analyses........................................................................................................14Item statistics.............................................................................................................14Scale statistics............................................................................................................15Confidence bounds for the national percentile ranks ..............................................16Validity analyses ...........................................................................................................18Check on gender bias .................................................................................................18Concurrent validity....................................................................................................19Internal correlation structure ...................................................................................20Connection to CAT·4..……………………….……………………………………….............22References…………....……………………….……………………………………….............25Appendix A. Item locations and standard errors by subtest and level.......................26Appendix B. Smoothed distributions of theta and composite scores by age...............33Appendix C. Item-age regressions for Gc, Gv, and Gf .................................................48Appendix D. NPR lower and upper confidence bounds by subtest and summary score........................................................................................................................................62i