Verbal Development in a Mongoloid

Abstract

A mongoloid boy, IQ about 60, was taught to read and write using the kinesthetic method. He kept a diary from age 11 to age 45. Test data at age 45, various statistical word-counts and reading indices, and a Q sort of diary entries randomly selected from age 13 to 41 showed a reading vocabulary level maintained at or above the seventh grade level, and a writing level approximately comparable. Analysis using the formula developed by Parks of a 5,000 word sample showed a style similar to the spoken language of a bright five year old, yet with high redundancy with words of low rank and selectivity for words of high rank that statistically differentiated the two.