Darwinism
Principle of organic evolution enunciated by Charles Darwin in 1859.
Principle of organic evolution enunciated by Charles Darwin in 1859.
Desire of the person to return to an inorganic state.
Mechanisms or techniques adopted by ego to keep unacceptable materials or thinking out of consciousness so that anxiety can be kept at minimum.
A tendency to behave in specific way.
The view that all events are explicable in terms of antecedent factors or cause-and-effect manner.
The minimum amount by which two stimuli must differ in order to be just noticeably different.
A metaphysical position in which both mind and body are held to be function of one underlying reality.
A concept used by Hull to refer to the subjective feelings associated with needs.
The motivational forces underlying behaviour.