Identifying mediators in variable chains as part of a causal mediation analysis can shed light on issues of causation, assessment, and intervention. However, coefficients and effect sizes in a causal mediation analysis are nearly always small. This can lead those less familiar with the approach to reject the results of causal mediation analysis.…

Numerous studies show that intelligence and impulsiveness are important predictors of academic achievement in adolescence. However, it is not clear what contribution is made by the big five personality traits, because some studies suggest that Conscientiousness, Extraversion and Openness to experience are predictors while others show precisely the…

Objective: This study examines the difference between college students with and without Attention Deficit/ Hyperactivity Disorder (ADHD) in regard to their work performance. Method: A series of ANOVAs analyzed group differences in symptoms experienced at work. The independent variable was group (i.e., ADHD, Controls). The dependent variables…

The problem which this study addresses is the effects of cognitive style and variations in the free sort procedures on the sorting outcome of sorting time and number and quality of manifest partitions. This experiment was designed to look at the effects of the cognitive styles of field dependence, category width and equivalence range,…