In this 4-part study, 1970 test data from 45 American Indian youth (aged 11-15) attending Riverside Summer Institute in Anadarko, Oklahoma, were examined. Part 1 of the study sought to identify the pattern of strengths and weaknesses on the "Wechsler Intelligence Scale for Children" (WISC) of Indian students with average intelligence and average or above-average reading ability. Strengths were in similarities, picture completion, block design, and coding; performance scale IQs exceeded verbal scale IQs; and weaknesses were noted on the vocabulary and picture arrangement subtest. Part 2 dealt with patterns of strengths and weaknesses on the WISC of Indian students with average intelligence and below-average reading ability. Strengths were in picture arrangement, block design, object assembly, and coding, and weaknesses were in information, comprehension, arithmetic, similarities, and vocabulary. Part 3 compared the performance on the WISC of retarded and nonretarded readers (as classified by the Gates MacGinitie Reading Test). The verbal scale IQ scores of both groups were lower than the performance scale IQ scores, and both groups exhibited weaknesses in vocabulary and strengths in picture completion, block design, and coding. Part 4 identified the strengths and weaknesses of male as opposed to female retarded readers. The mean verbal scale score (WISC) of males was about 10 points lower than that for females; the mean performance score of the males was 4.8 points higher than that for females; and the mean full scale scores of males and females were within 1 point of each other. The document contains a 5-item bibliography and 4 tables showing mean WISC scores. (MJB)