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Researchers use sample results in an attempt to estimate an unknown population statistic.
Secondary Circular Reactions
Repetitive actions in infant development focused on external objects, part of Piaget’s stages of cognitive development.
Object Permanence
The recognition that items persist in existence even when they are not visible, audible, or detectable through other senses.
Object Permanence
The understanding that objects continue to exist even when they cannot be observed (seen, heard, touched, smelled, or sensed in any way).
Deferred Imitation
The capability of reproducing a behavior observed at an earlier time, without the immediate presence of the original stimulus.
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