Selected elements of reading and psychomotor characteristics among good and poor readers of divergent intellectual abilities were investigated. Four groups were selected for study: good and poor readers who were of average ability, and good and poor readers who were mentally handicapped. Approximately 160 subjects were identified for testing, and the final population was composed of 127 subjects with mental ages of about 9 years. Tests were given in the following areas: auditory discrimination, visual word discrimination, reading, visual perception, learning aptitude, visual-motor integration, associative learning, lateral dominance, and visual-motor retention. The results indicated that good and poor readers were often differentiated on measures of reading; they were infrequently differentiated on measures of psychomotor characteristics. Poor reading retarded children were substantially inferior to the other groups on measures of reading skills. The interrelationships among the measures of reading were such that it was difficult to identify specific deficits. A bibliography and tables are given. Included in the appendix is a paper entitled "Visual and Auditory Perceptual Factors in Reading." (DE)