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The graded response model, which is based on item response theory, was used to evaluate the psychometric properties of adult self-ratings (N = 852) of the attention deficit/hyperactivity disorder inattention, hyperactivity, and impulsivity symptoms presented in the Current Symptoms Scale. This scale has four ordered response categories. The results for the discrimination parameters showed that all symptoms were generally good for discriminating their respective latent traits. For virtually all symptoms, their threshold values showed that they were especially good at representing the appropriate traits from around the mean trait level onward. The item information function values for most symptoms indicated reasonable reliability from approximately the mean trait level onward. All these findings are new and extend existing psychometric information for adult self-ratings of the attention deficit/hyperactivity disorder symptoms in the Current Symptoms Scale.

Item Type:	Refereed Article
Keywords:	adult attention deficit/hyperactivity disorder rating scales, current symptoms scale, item response theory, graded response
Research Division:	Psychology and Cognitive Sciences
Research Group:	Psychology
Research Field:	Health, Clinical and Counselling Psychology
Objective Division:	Health
Objective Group:	Public Health (excl. Specific Population Health)
Objective Field:	Mental Health
Author:	Gomez, R (Professor Rapson Gomez)
ID Code:	74406
Year Published:	2011
Web of Science® Times Cited:	9
Deposited By:	Psychology
Deposited On:	2011-11-29
Last Modified:	2015-01-27
Downloads:	0