D

n23

DECLARATIVE

The sentence or clause that makes a statement and not a question. See indicative.

DEDIFFERENTIATION

A loss of specialisation and functional abilities.

DEFECT ORIENTATION

A service planning process that focuses on a person's limitations, deficits and disabilities. See defect theory. Compare development orientation.

DEFERRED IMITATION

Imitating an act some time after it happened. Proposed by Jean Piaget and first seen at around 18 months old.

DEGREES OF FREEDOM

1. Number of elements free to vary in a statistical calculation. See chi-square distribution. 2. Motor control. The joints and

DEJA RACONTE

French-told before. The idea that a long forgotten event has been told before. See false memory.

DELAYED RESPONSE

A response to a stimulus after it has been removed.

DELTA MOVEMENT

The apparent movement of a brighter stimulus toward a darker one.

DEMAND

The internal or external condition that causes a need in an organism. Generally a urgent need or requirement.

DEMOGRAPHIC PATTERN

A pattern revealed by a population variable such as birth and death rates, income, medical health etc.

DENDRITIC ZONE

Any part of the surface that is receptive.

DENYING THE ANTECEDENT

The formal fallacy the denies the antecedent. See affirming the antecedent- affirming the consequent.

DEPRIVATION

The removal or denial of something or the reduction of access to a reinforcer.

DERAILMENT OF VOLITION

An indecisiveness where goals are replaced by irrelevant impulses and contradictory wishes.

DERMO-OPTICAL PERCEPTION (DOP)

Ability to see and identify colour by touch. Also called cutaneous perception of colour.

DESIGN FLUENCY TEST

A group of tests that are time limited and need to draw figures or remodel lines to make shapes. Also

DESTRUDO

The energy that is associated with Thanatos, the instinct to deter death rather than Eros the life instinct. See mortido.

DETERMINER

Linguistics. Word with a noun or pronoun limiting ot determining its reference.

DEVELOPMENT

The progressive series of change in something.