The Concept Shifting Test (CST) is a newly developed Trail Making Type test that measures concept shifting and executive functioning. The purpose of the present study was to determine whether CST performance was affected by age, gender, educational level, or handedness and to establish the normal range of test performance. The CST was…

Spearman's "Law of Diminishing Returns" states that the g saturation of a test is greater for individuals with lower, rather than higher, test scores, and that it decreases with age. A common methodological problem in testing Spearman's "Law of Diminishing Returns" with respect to ability differentiation is how to create the…

The Relationship Involvement Scale was created to allow individuals to identify the degree to which they are involved in a relationship. The developed scale includes norms, reliability, and validity and was completed by a total of 306 undergraduates at two southern universities. While there were no significant differences between women and men on…