DELAY-OF-REWARD GRADIENT
The relation between the delay of reinforcement and how effective the reinfocement is. Also called delay of reinforcement gradient.
DEPLETIVE TREATMENT
Treatment involving weakening an organism by depleting it of a harmful substance.
DEPRIVATION INDEX
Measure of the degree of inadequacy in a child's intellectual environment.
DEREALIZATION
State characterised by a sense of unreality such as 'This can't be happening'.
DESIGN FOR THE AVERAGE
The principle that says all equipment that is designed for a person to use should suit the average and not…
DESYMBOLIZATION
A way to deprive symbols of accepted meanings and replacing them a distorted idea.
DETERMINISM
1. Philosophy. Taking the psoition that all events are the results of an antecedent cause or other force. See causality.…
DEVELOPMENTAL AGE (DA)
The measure of development that is expressed as an age thay may not match actual age.
DIALECTICAL OPERATIONS
Mechanisms that develop as a result of interactions between the environment and the individual.