Evaluating the psychometric improvements provided by Basadur CPSP 2-Experimental

Abstract

<p>The psychome tric properties of CPSP 1, the original version of the Ba sadur Simplex Creative Problem So lving Profile Inventory (Bas adur, 19 9 8a), were improved in previ ous research (Bas adur, 19 98 b). A second, experimental vers ion, coded CPSP 2, resulted. The present paper more thoroughl y evalua tes the ext ent of the improvement. Ove rall, CPSP 2 was found to be substantially better than CPSP 1. In reliability, there were impor tant increases in te st -retest and parallel split -half correlations and within scale intracorrel ati ons. There remains room for improvemen t in intracorrela tions of items within the four columns, especia lly column 3. There remained 26 relatively weak intracorr elations withi n column 3 (com pared to 41 for CPSP 1) . In colu mns 1, 2 and 4 there remai ned 9, 2, and 9 such relatively weak item intracorr elations respec tively (vs 34, 21, and 23 for CPSP 1 ). CPSP 2 was poorer than CPSP 1 in independence of the two bi-po lar scales and in indepen dence of two of the four adjacent column pairs. Further reliability refinement work is recommend ed. In terms of valid ity, CPSP 2 correlated with the Myers -Briggs Type Indi cator ( MBTI) in predicted ways even more so than CPSP 1. Also, correla tions of preferred CPSP st yle and preferred ideation-evaluati on ratio with field of endeavor and level of org anizational resp onsibility for strateg ic thinking matched predictions very well and simila rly to CPSP 1.</p>