DEMONSTRATION EXPERIMENT

A demonstration by a teacher in a classroom.

DENIAL

Part of defence mechanisms to put away unpleasant thoughts and wishes from our conscious awarenes.. Also called disavowal.

DEPACON

Trade name for valproate sodium. See valproic acid.

DEPO-PROVERA

The trade name for medroxyprogester-one acetate used on sex offenders. See chemical castration.

DEPTH CUE

The way we see a distant object in relation to ourselves.

DEREISM

Mental activity not in accord with reality or logic. Also called dereistic thinking.

DESCENDING TRACT

The bundle of nerve fibres from the brain to the spinal cord.

DESIGN TRADE-OFF

A situation where one attribute of a system or product is made less suitable by giving priority to another feature.

DETACHED CHARACTER

A personality featuring extreme self sufficiency and a lack of feeling towards others. Compare aggressive caharacter- compliant character.

DETERRENCE

The idea that punishment will stop a person or deter them from engaging in the same behaviour.

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