Cognitive Development of Preschool Children with Hearing Impairments: Results of an Experimental Study

The paper presents the results of the approbation of a diagnostic set of tasks aimed at determining the level of cognitive development of children with hearing impairments at the final stage of preschool education. The scope of examination of cognitive development of preschool children with hearing impairments included the tasks for determining the level of development of intellectual operations, the level of comprehension of elementary mathematical notions, and tasks for evaluating voluntary attention and activity organization. The research presents diagnostic possibilities of the practical application of the developed diagnostic complex. The author shows that the proposed set of tasks makes it possible to determine the individual abilities of children with hearing impairments in the studied development area. The research tentatively distinguishes different groups of children with hearing impairments, differing in the level of cognitive development. The obtained data are summarized and systematized for each selected group.