At the age of 15 he was fitted with hearing aids and taught Spanish, however after 4 years he still had severe difficulties in verbal comprehension and production.

The test scores on four criteria; verbal comprehension, perceptual organisation, working memory and processing speed.

Organophosphates have been specifically linked to poorer working memory, verbal comprehension, perceptual reasoning and processing speed.

Attention has been regarded as an important factor in the healthy functioning of encoding, verbal comprehension and new learning.

Expressive aphasias, also called Nonfluent aphasias, are difficulties in articulating, but in most cases there is relatively good auditory verbal comprehension.

Among left handed writers defects of verbal comprehension were more frequent than among those who wrote with the right hand.

These categories were numerical, reasoning, spatial, perceptual, memory, verbal fluency and verbal comprehension.

Higher DAP levels were associated with lower scores on four cognitive areas, with the strongest association in verbal comprehension.

The seven primary mental abilities in Thurstone's model were verbal comprehension, word fluency, number facility, spatial visualization, associative memory, perceptual speed and reasoning.

Included seven tests and provided two subindexes; verbal comprehension and working memory.