DIFFERENTIAL VALIDITY
Accuracy and validity of tests of a person's success in different tasks.
DIGIT SPAN
An attention test to see how many numbers a person is able to remember. There is a forward and backward…
DILUTION EFFECT
Animal behaviour. A large group of animals has a better chance of eluding a large animal preying on them than…
DIRECT SELECTION
A form of natural selection where a trait will improve the likelihood of the offsprings survival to reproduce.
DIRECTIVE GROUP PSYCHOTHERAPY
Group therapy that helps a person adjust to their environment through tasks and therapeutic recreation.
DISCRIMINANT VALIDITY
Form of construct validity shown by measuring the constructs conceptually unrelated and o not correlate with data.
DISEASE OF ADAPTATION
Any illness that is caused by a long term defective physiological or psychological reaction to stress.
DISRUPTIVE BEHAVIOR DISORDER NOT OTHERWISE SPECIFIED
Any pattern of disruptive behaviour that does not have a specific category.
DISTRACTIBILITY
Having difficulty in maintaining attention or being easily diverted away from an activity. See flight of ideas.
DISTURBANCE TERM RESIDUAL TERM, ERROR VARIANCE
The variablity in a score not systematic or controlled and not produced by an independent variable.
DIVIDED ATTENTION
Paying attention to 2 things at once so more tasks can be performed at the same time.