Examlex
Stratification represents a modification to rather than an alternative to simple random sampling and systematic sampling.
Reinforcement
In behavioral psychology, a consequence applied that strengthens an organism's future behavior whenever that behavior is preceded by a specific antecedent stimulus.
Unconditional Response
A natural, unlearned reaction to an unconditioned stimulus, a term primarily used in the context of classical conditioning in behavioral psychology.
Primary Circular Reaction
The term Piaget used to describe the infant’s tendency to repeat pleasurable bodily actions for their own sake.
Sucks His Fingers
A natural reflex for infants, often for comfort or self-soothing.
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