The influence of hereditary factor upon the development of thinking skills in confluence of the factors of manual asymmetry and hearing impairment

Abstract

The subject of this research is the peculiarities of development of thinking skills in confluence of the factors of manual asymmetry and hearing impairment in families in which parents have hearing impairment and preserved hearing. The object of this research is the characteristics of thinking in combination of hearing impairment and manual asymmetry. The author dwells on such aspects as hereditary factor in the formation of thinking skills among left-handed and right-handed students with hearing impairment. Special attention is given to the peculiarities of the formation of thinking in combination of hearing impairment and manual asymmetry among students brought up by deaf or normally hearing parents. The main conclusions are as follows: right-handed students with hearing impairment brought up by deaf parents have higher characteristics of logical and creative thinking than students brought up by normally hearing parents; left-handed students from families of the deaf have higher characteristics of creative thinking if their parents' hearing is preserved, while the characteristics of logical thinking are higher if their parents’ hearing is impaired; a "mirror image" is detected in the development of creative thinking among left-handed and right-handed students, depending on the hearing condition of their parents; connection is established between logical and creative. The author’s special contribution lies in acquisition of data on the influence of hereditary factor upon the development of thinking in combination of hearing impairment and manual asymmetry. The novelty of this research consists in comparative study of creative and mathematical thinking in confluence of the factors of hearing impairment, manual asymmetry and a hereditary factor. New data is obtained on the peculiarities of development of thinking skills among right-handed and left-handed students with hearing impairments brought up by hearing parents and parents with hearing impairment.