Over the past few years a number of companies have sprouted up offering hair analysis. They advertise drug, allergy, food intolerance and metal exposure assessments, and all you have to do is send in ...

A review of 76 studies reveals that research largely supports the validity and reliability of isokinetic strength testing of older patients with stroke, but few data are available that provide ...

The rapid pace of development in the field of genetics has increased our knowledge of the molecular basis of disease. This information is now being applied to the development of genetic tests, which ...

Ethnographic research, such as observing the setup of a catheter, often leads toideation. But it can also lead to significant device design. In 2001, William Reese and I wrote an article about the use ...

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 ...

In an attempt to support or dispute the legitimacy of the current chronological tire age removal recommendations, this report initiated an independent, self-financed study of aged tread/belt ...

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 ...

NEW ORLEANS -- The Produce Marketing Association is testing the value of a standard produce catalog -- a central point of entry for produce buyers and suppliers -- which would be a first for the ...