Competition for resources including food, physical space, and potential mates is a fundamental ecological process shaping variation in individual phenotype and fitness. The evolution of competitive ...

This blog was co-authored with Marcia Gralha, M.A. Human personality concerns (a) how we are all alike (i.e., human nature), (b) how we are like some other people (i.e., individual differences), and ...

Like with any disease, there is a multitude of experiences and underlying issues that can impact the development of an addiction. For those with substance use disorders, there is often an underlying ...

Comorbidity is when a person has more than one health condition at once. Researchers investigating the comorbidity of personality disorders have found people with certain disorders may have other ...

Diagnosing personality disorders in children is controversial due to natural developmental shifts in mood and behavior. When maladaptive traits remain pervasive and persistent, however, a personality ...