THE PURPOSE OF THE PRESENT STUDY WAS TO INVESTIGATE THESE ASPECTS OF THE READING PROCESS--(1) SILENT AND ORAL READING ACHIEVEMENT, (2) PATTERN OF READING ERRORS, (3) AND AUDITORY AND VISUAL PERCEPTION TECHNIQUES. THE FACT THAT COMPARISONS BETWEEN THE EXOGENOUS AND ENDOGENOUS GROUPS ON THE QUANTITATIVE AND MOST OF THE QUALITATIVE ASPECTS OF TEST PERFORMANCE DID NOT APPEAR STATISTICALLY SIGNIFICANT TENDS TO INDICATE THAT THE DEGREE OF GENERAL DISTURBANCES OF BEHAVIOR OF THE EXOGENOUS GROUP IS NOT SUFFICIENT AT THIS TIME TO INTERFERE WITH THE ACQUISITION OF READING SKILLS OVER AND ABOVE THE DIFFICULTIES ENCOUNTERED BY THE ENDOGENOUS GROUP. (JL)