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DIHYDROCODEINE

See opioid analgesics.

DIMORPHISM

When 2 members of the same species have 2 distinct forms that differin one or more features. See sexual dimorphism.

DIRECT COPING

The active and focused confrontation and management of a tressful situation.

DIRECTION PERCEPTION

Ability to find a moving target in space or a sound.

DISABILITY EVALUATION

The evaluation of how an impairment will effect a person in gaining employment.

DISCONTINUITY EFFECT

The increase of competitiveness of intergroup interactions compared to the individual interactions.

DISCRETE TRIAL

The defined and limited occasion to do a behavioural act.

DISCRIMINATIVE RESPONSE

Response controlled by stimulus.

DISHABITUATION

The reapperarance or enhancement of a habitual response due to new stimulus. Compare habituation.

DISORDERS OF THE SELF

Any narcissitic problems resulting from insuffficient response by others to one-s needs.

DISPLAY BEHAVIOR

A sterotyped action bringing about a response as part of animal communication. See display rules.

DISSOCIATIVE FUGUE

A dissociative disorder where the person suddenly travels away fron home.

DISTANCE VISION

Vision that allows us to see objects more the 6m away.

DISTRIBUTED REPRESENTATION

System of information processing where separate components carry the units of knowledge.

DIVAGATION

The rambling or digressing speech, thoughts or writing. See disorganised speech.

DLPFC

An abbreviation for dorso-lateral prefrontal cortex.

DOMAIN-GENERAL ABILITY

The cognitive ability that will influence performance over a wide range of tasks.

DOMINANT IDEOLOGY THESIS

Marxist theory that the ruling class consolidates its position by forcing its ideology on lower classes. See hegemony.

DOPAMINE RECEPTOR

The receptor molecule sensitive to dopamine and related compounds. The receptors are found in the basal ganglia, blood vessels in

DORSOLATERAL PREFRONTAL CORTEX (DLPFC)

Region of the brain located near the front and to both sides of the prefrontal cortex in mamals.