ABSTRACT
An interesting line of research into co-morbidity comes from A. Fawcett, which she calls the Specific Procedural Learning Deficit hypothesis. One important aspect of co-morbidity is that where two or more conditions exist in one person, one condition may influence the other in its trajectory, intervention and remediation. Children experiencing more than one information processing disorder is probably the norm rather than the exception, with one condition overlapping upon another and possibly another. The vestibular sense enables the child to interact safely with their environment and is closely associated with the movement of fluid in the inner ear. A further difficulty with an impairment of the auditory sense is auditory distractibility. This is the ability of the brain to select sounds of importance and ignore the general background noise. Impairment of visual discrimination is also likely to affect a child's ability to track along a line of print, and to estimate distance and direction.
