Verbal intelligence

In a practical sense, linguistic intelligence is the extent to which an individual can use language, both written and verbal, to achieve goals.

The first stage is planning, where the brain constructs words and sentences that turn the thought into an understandable form.

While the location of these associations is not known, it is known that the supplementary motor area plays a key role in this step.

Deafness, as well as other, smaller deficiencies in hearing, can greatly affect one's ability to comprehend spoken language, as well as to speak it.

[11] However, if the person loses hearing ability later in life, most can still maintain a normal level of verbal intelligence.

This is thought to be because of the brain's feed forward mechanism still helping to fix speech errors, even in the absence of auditory feedback.

[12] PCDH11 has been linked to language capacity, and it is believed to be one of the factors that accounts for the variation in linguistic intelligence.

[17] Recently, a study was done showing that verbal fluency test results can differ depending on the mental focus of the subject.

[8] In addition, damage to large areas of the brain can result in any combinations of these disorders, as well as a loss of other abilities.

[12] Developmental verbal dyspraxia (DVD) is a disorder where children have errors in consonant and vowel production.

[12] Stuttering is a fairly common disorder where speech flow is interrupted by involuntary repetitions of syllables.

As a result, many patients suffering from ASD also have language problems, arising from both the lack of social interaction and lowered mental flexibility.

[12] Epilepsy is a disorder where electrical malfunctions or mis-communications in the brain cause seizures, leading to muscle spasms and activation of other organs and systems of the body.