Missing data are a pervasive problem in many psychological applications in the real world. In this article we study the impact of dropout on the operational characteristics of several approaches that can be easily implemented with commercially available software. These approaches include the covariance pattern model based on an unstructured…

The authors reviewed the psychological research on envy. The authors examined definitional challenges associated with studying envy, such as the important distinction between envy proper (which contains hostile feelings) and benign envy (which is free of hostile feelings). The authors concluded that envy is reasonably defined as an unpleasant,…