In 2000, London opened its Millennium pedestrian bridge to the public in a widely celebrated event. The momentous occasion drew large numbers of people, eager to view and experience the bridge first ...

In my previous blog post, I noted that reliability and validity are two essential properties of psychological measurement. Measures of intelligence, personality, vocational interests, and so forth ...

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 reproducibility crisis in biomedical research presents a new challenge for conducting harm-benefit analysis: how do we improve the validity of studies to maximize the likelihood of benefit? Every ...

Correspondence to Dr Moritz Schumann, Institute of Cardiovascular Research and Sports Medicine, Department of Molecular and Cellular Sports Medicine, German Sport University Cologne, Koln 50858, ...