Psychology Today

The Validity of Psychological Research

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 ...
Nature

Validity and reliability of the Apple Health app on iPhone for measuring gait parameters in children, adults, and seniors

This study assessed the concurrent validity and test–retest-reliability of the Apple Health app on iPhone for measuring gait parameters in different age groups. Twenty-seven children, 28 adults and 28 ...
Nature

The reliability and validity of a novel clinical tool for distributing rehabilitation patients: a multicenter cross-sectional study in China

The reliability and validity of the DRP tool are the basis for further research. In this study, we aimed to assess the reliability and validity of the DRP tool for measuring a population of ...
Medical Xpress

Study finds that many published psychology experiments lack evidence of validity

An examination of nearly 350 published psychological experiments found that nearly half failed to show that they were based on a valid foundation of empirical evidence, suggesting that a wide swath of ...
BMJ

How well do activity monitors estimate energy expenditure? A systematic review and meta-analysis of the validity of current technologies

Objective To determine the accuracy of wrist and arm-worn activity monitors’ estimates of energy expenditure (EE). Data sources SportDISCUS (EBSCOHost), PubMed, MEDLINE (Ovid), PsycINFO (EBSCOHost), ...