A mental category that groups objects, relations, activities, abstractions, or qualities having common properties is called a(n):

Who is most likely to be cohabiting?

a. Oksana, from Russia b. Sarah, from Sweden c. Karly, from the U.S. d. Marika, from Switzerland

Durbin and Klein (2006 ) examined the stability of personality diagnoses in a mood disorder population and found that:

a) Ten-year stability coefficients using categorical diagnoses was relatively good b) Stability coefficients increased as the time interval increased c) Consistent with previous research, cluster A personality disorders had the greatest stability over time d) Stability coefficients are highest when a dimensional approach is taken