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 ...

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 ...

Evaluation of Vulnerable Elders Survey, G8 questionnaire and Predictors of Toxicity as screening tools for frailty and toxicities in geriatric patients with cancer. This is an ASCO Meeting Abstract ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

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 ...