Mehmet is conducting a study aimed at improving the problem solving abilities of older adults. Prior to the intervention, all of the participants are given a series of problems to solve and, in the process of trying to solve them, many of the participants refine their approaches to problem solving. As a result, Mehmet's study has a(n) ____ threat

The Big Five factors and Cattell's factors were both derived using factor analysis

Indicate whether the statement is true or false.

Humanism is the ____

a. scientific study of behavior to identify its causes and to modify it b. philosophical movement that emphasizes human welfare and individual uniqueness c. biological theory of abnormal behavior first used by the ancient Greeks d. practice of identifying and executing individuals believed towitches