What is Scaling?

placeholder

measurement scale

What is Scaling?

The development of systematic rules and meaningful units of measurement for quantifying empirical observations. Thus, a measurement scale is established when we define the set of possible values that can be assigned during the measurement process and state an explicit assignment rule. A scaling rule establishes a link or rule of correspondence between the elements […]

arnold on Sep 16, 2008

placeholder

Psychometrics

What is Test Theory?

The study of pervasive measurement problems. Two methods are 1)estimating the extent to which these problems influence the measurement taken in a given situation and 2) devising methods to overcome or minimize these problems. In other words it provides a general framework for viewing the process of instrument development.

arnold on Sep 16, 2008

placeholder

constructs

What is a construct?

Constructs are latent variables. A latent variable cannot be measured directly, but only through measurable indicator variables. When it comes to psychological traits, you cannot simply observe a person and be able to record a measure of these traits. For example, if you needed a measure of organizational commitment you could not simply sit a […]

arnold on Sep 16, 2008

placeholder

Psychometrics

What is Measurement?

Measurement applies to the properties of an object. Measurement of the psycholoical attribute occurs when a qualitative value is assigned to the behavioral sample collected by using a test. From a measurement of observable behavior, the test devloper draws an inference about the amount of the theoretical construct that characterizes an individual. Why measure constructs? […]

arnold on Sep 16, 2008

placeholder

Psychometrics

The Power of Consumers

http://www.consumershockandawe.com/ http://www.sgroupinvestmentsllc.com/

arnold on Jan 24, 2008