Examlex
A study is an observational study if the investigator observes the behaviorof a response variable after one or more factors have been manipulated.
Primary Circular Reactions
Early repetitive behaviors of infants, focused on the infant’s own body, that serve as the building blocks of sensory and motor development.
Tertiary Circular Reactions
The stage in Piaget's theory of cognitive development where infants aged 12 to 18 months demonstrate trial and error experimentation, showing a more sophisticated understanding of cause and effect.
Mental Representations
Internal cognitive symbols, models, or maps of the world, phenomena, or concepts that the mind constructs for understanding and navigating the environment.
Object Permanence
The understanding that objects continue to exist even when they cannot be seen, heard, or otherwise sensed, a critical concept in the cognitive development of infants.
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