• Entry
  • Reader's guide
  • Entries A-Z
  • Subject index

True score, which is the primary element of true score theory, is the individual's score on a measure if there was no error. Some classic theories of measurement believe that a true score can be estimated through repeated testing. The concept of true score is important to research design as it emphasizes that there is some error involved in any type of measurement (e.g., height, weight, self-esteem, IQ, and heart rate). In this entry, the definition of a true score is developed and explored with respect to reliability, measurement error, and classic extensions. Finally, some alternatives to true score theory are briefly presented.

Definition

True score can also be defined with respect to the idea of an observed score. In short, the observed score is the true ...

Loading
  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles