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DYSTHYMIA

A depressed mood that is mild to moderate.

DECISION MAKING

The process of choosing between alternatives.

DECOMPRESSION SICKNESS

The effect of the body after being expose to high pressure such as deep under water and rising too fast

DEEP DYSLEXIA

An acquired form of dyslexia with semantic errors, reading abstract words is difficult as is function words.

DEFENSE MECHANISM

Classical psychoanalytical theory. The unconscious reaction the ego uses to protect itself from anxiety arising from psychic conflict. Also called

DEFINITION

Optics. Clarity of a reproduced image. Compare resolution.

DEHYPNOSIS

Where the befief of hypnotic fantasies are eliminated.

DE

A task for non-human animals that need to learn that food will be rewarded on different sides of the cage

DELIRE DU TOUCHER

A compulsion to touch objects.

DELUSION OF PERSECUTION

The belief where a person hinks he is being conspired against. See persecutory delusion.

DEMENTIA PRAECOX

Obselete name for schizophrenia meaning deterioration of the mind.

DEMOTIVATION

The use of negative imagery and self-talk as to why you can't do anything well.

DENSITY

1. The compactness of an element that reflects impenetrability. 2. The amount of space for each person in an area.

DEPENDENCE

1. A person's state when the need assistance from others.2. See substance dependence. 3. Operant conditioning. The causal relationship between

DEPRESSION

1. A dysphoria that can cary from mild to severe mood changes. 2. Psychiatry. A dpressive disorder.

DEPTH INTERVIEW

An interview that reveals deep seated feelings, attitudesand motives without fear of disapproval.

DERIVED NEED

The need that is developed from a primary need.

DESCRIPTIVE AVERAGE

The estimate of the average from only a partial set of data.

DESKILLING

Redesigning a task so it easier to learn and requires less skill to do.

DETAIL PERSPECTIVE

A depth cue related to texture and the details on a surface.