Is Construct Validation Valid?

Overactivity in chronic pain: is it a valid construct?

Overactivity is a frequently used term in chronic pain literature. It refers to the phenomenon whereby individuals engage in activity in a way that significantly exacerbates pain, resulting in periods of incapacity. Overactivity, as a construct, has been derived solely from patients' self-reports, raising concerns about the legitimacy of the construct. Self-reported overactivity reflects an ind...

P59: Internet Addiction: A Clinically Valid Construct and its Correlates

Although the internet has become one of the most important information resources for university students, excessive internet use can be defined as uncontrolled and harmful use of the internet, in other words, Internet Addiction. Internet addiction (IA) can be described as a maladaptive preoccupation with internet use impairing social, occupational and other areas of a person’s functioning. Rece...

Valid Construct Measurement Using Multiple Models

Invalid measurement of constructs in survey research often remains undetected and can lead to false conclusions. An important determinant of a construct’s measurement validity is how it is modeled. A construct can often be modeled in different ways, such as the sum of its parts or the cause of its effects. Since each of these models is associated with a unique set of errors, the common practice...

Construct Validation 1 Construct Validation in Organizational Behavior

Is cross-validation valid for small-sample microarray classification?

MOTIVATION Microarray classification typically possesses two striking attributes: (1) classifier design and error estimation are based on remarkably small samples and (2) cross-validation error estimation is employed in the majority of the papers. Thus, it is necessary to have a quantifiable understanding of the behavior of cross-validation in the context of very small samples. RESULTS An ext...