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 ...

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 ...

This is a preview. Log in through your library . Abstract Background and Purpose: The impact of stroke is multidimensional however standard stroke measures do not discriminate well when stroke ...

Since 1971, interest in the use of decompositional multiattribute preference models in marketing has been increasing. The applications have varied in terms of the type of data used, behavior predicted ...

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 ...