Classification and validation of behavioral subtypes of learning-disabled children.

63 1st and 2nd graders recently identified as having a learning disability (LD) and 66 normally developing Ss matched by grade, sex, and race with LD Ss were rated by teachers on the 60-item Classroom Behavior Inventory and observed using a time-sampling schedule of classroom activity norms. Analysis identified 7 distinct behavioral subtypes of LD Ss. In Cluster 1, 28.6% Ss had deficiencies in task-oriented behavior and independence. In Cluster 2 (25.4% of Ss) and Cluster 5 (9.5% of Ss), 2 variations of normal classroom behavior were represented. In Cluster 2, Ss had slightly elevated ratings on considerateness and introversion, while in Cluster 5, Ss were seen as slightly less considerate and more hostile. In Cluster 3, mild attention deficits in 14.3% of Ss were combined with high ratings on distractibility and hostility and low ratings on considerateness. In Cluster 4, 11% of Ss were withdrawn and overly dependent with low ratings on independence and extraversion and high ratings on dependence and introversion. In Cluster 6, 6.3% of Ss showed a pattern of a mild version of a global behavior disorder. In Cluster 7 (3 males), Ss were impaired on all classroom behaviors. (31 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)