The Booklet Category Test

Purpose: Predictor of general neurological dysfunction.

Population: Adolescents and adults.

Score: Not reported.

Time: Not reported.

Authors: Nick DeFilippis and Elizabeth McCampbell.

Publisher: Psychological Assessment Resources.

Description: This test is a booklet version of the Category Test originally introduced by Halstead and revised by Reitan as a subtest within the Halstead-Reitan Neuropsychological Battery. The Category Test is often seen as a rather complex concept formation test that is not especially difficult for normal subjects, but requires abstraction ability that is often diminished in subjects with cortical damage. According to Reitan and Davison, the purpose of the test is to "determine the ability of the subject to profit from both negative and positive experience as a basis for altering his [sic] performance."

Scoring: Patients must attempt to abstract the organizing principle or concept involved in seven groups of stimuli presented on sheets of paper in a binder. The number of errors made by the subjects is recorded as a measure of the individualís ability to profit from experience. Difficulty exist in interpretation because it is unlikely that any two subjects would exhibit the same pattern of positive and negative feedback.

Reliability, Validity, and Norms: The manual relies primarily upon the body of research developed with the Category Test. The manual reports the correlations between the Booklet Category Test and the Category Test to range from .91, for 30 normal students, to .76, for a heterogeneous group of 38 psychiatric patients. While promising, these data are less than sufficient in establishing the equivalence of the two tests. Although the relationship between the Category Test and the booklet version may be viewed as an estimate of its stability-equivalence, no formal reliability data are reported.. The manual also lacks any standardization or normative date.

Suggested Uses: The Booklet Category Test offers a promising adaption of the Halstead-Reitan version which reduces equipment cost and increases the portability of the test.