D

n23

DIAGNOSTIC BASELINE

The entry level or pretreatment level of a condition.

DIALOGUE (DIALOG)

1. A change of ideas between people. 2. Gestalt therapy where the client talks to a body part person or

DICHOPTIC STIMULATION

Presenting different stimulus to each eye at the same time.

DIETHYLPROPION

Stimulant used to suppress appetite. See analeptics.

DIFFERENTIAL GROWTH

The growth rate that is different to other growth rates.

DIFFUSE-STATUS CHARACTERISTICS

Qualitites a person sees in others when estimating their value socially, ability and relative competency. See expectation states theory- status

DIHYDROERGOTAMINE

Used to treat migraines.

DIN COLOR SYSTEM

European system for colour by the attributes of hue, luminosity and saturation.

DIRECT GLARE

An interference to vision by a bright light in the field of vision.

DIRECTIONAL CONFUSION

A difficulty in choosing left from right and other directions such as uptown and downtown.

DISABILITY LAWS

The legislation that is related to people with any form of disability.

DISCONTINUITY HYPOTHESIS

Gestalt psychology.Where the viewpoint emphasises the role of our sudden insight when solving a problem.

DISCRETE VARIABLE

A random variable that is not continuous and has a small number of values.

DISCRIMINATIVE STIMULUS

Operant conditioning. A stimulus that increases the probablity of a response.

DISHONEST SIGNAL

A signal in animal communication that gives a misleading infromation about size, iontention and quality of an individual. See deception.

DISORDERS OF THE SLEEP-WAKE CYCLE SCHEDULE

One of the 4 types of sleep disorders. Often shown by shift workers that upsets the circadian rhythm.

DISPLAY DESIGN

Ergonomics. The design of a display for the effective transmission of information about goods and services. See display control compatability.

DISSOCIATIVE GROUP

A group you don't want to be associated with. Compare aspirational group.

DISTANCE ZONE

Social psychology. The interpersonal distance we leave between ourselves and other people. See intimate sone- personal distance zone- public distance

DISTRIBUTION

Relationship between values a variable may take and the relative number of cases with each value.