Special disability in spelling

Summary

Selective disability in spelling usually accompanies the reading disability. It may however exist as an isolated defect.

Inconstancy of recall of visual, auditory, and kinaesthetic engrams probably interferes with the establishment of the fixed associations needed for correct spelling.

Faulty spelling like other expressions of a language defect is found in certain families in association with left handedness, reading disability, and speech disorders and is considered to be the result of variations in the establishment of unilateral cerebral dominance.