It is important to appreciate what hierarchical or other organizational systems provide and what they do not provide. They provide potentially useful theoretical, descriptive accounts of the relations among homogeneous constructs. Organizational frameworks of constructs—such as the five-, four-, three-, and two-factor models of personality (Markon et al., 2005)—provide a valuable sense of which constructs tend to covary more with each other than with other constructs and hence enhance understanding of psychological processes.
