There is a distinction that one learns about on the first day of a course in psychological research methods. It is the difference between internal and external validity. Internal validity is ...

This is a preview. Log in through your library . Abstract Methodological issues must be examined within the context of metatheoretical perspectives. More specifically, at the level of drawing ...

The information needed to determine the internal and external validity of an experimental study is discussed. Internal validity is the degree to which a study establishes the cause-and-effect ...

The three-step process shown in Table 2 can be used to assess the validity of a study's findings and determine if they are relevant to readers' practices. The first step in establishing validity is to ...