Teachers of learning disabled, behavior disordered, educable mentally retarded, and nonhandicapped students ages 6-18 (N=1913) rated their students on the Abbreviated Teacher Rating Scale, a measure used to assess hyperactivity. Prevalence, distribution, and patterns of hyperactivity were analyzed, as well as age and sex differences.…

The rationale for and development of the Classroom Behavior Scales (CRB) are discussed in connection with applications on four separate samples of Head Start, kindergarten and first grade children. Studies of observer agreement, stability, structure, comparisons over sex, classes, conditions, observers and over time are presented. Results showed…