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rooting reflex

this causes the infant to turn its head to one side when stroked on the cheek and mouth of that side.

sucking reflex

this causes the infant to suck on an object placed in the mouth

moro reflex

occurs when the infant is exposed to a sudden, intense noise or movement

gross motor skills

refers to the abilities usually acquired during infancy and early childhood as part of a child's motor development.

fine motor skills

involve finely tuned movement


occurs when information interacts with sensory receptors-the eyes, ears, tongue, nostrils, and skin


the interpretation of what is sensed

ecological view

this theory argues that rather than taking in bits and pieces of sensory data to form representations of the world, we perceive information, which exsists in the world around us, directly

a newborns vision is about __, a six month old's vision is about _, and a one year old's is _.

20/600, 20/100, 20/20

perceptual constancy

when an infant's perception of the world remains constant in the presence of changing sensory stimulation

size constancy

the recognition than an object remains the same even though the retinal image of the object changes.

what is needed in order to walk upright?

balance on one leg and shift weight from one leg to another


decreased responsiveness to a stimulus after repeated presentations of the stimulus


the recovery of a habituated response after a change in stimulation

sensation is to perception as:

gross motor is to fine motor

intermodal perception

involves integrating information from two or more sensory modalities such as vision and hearing.

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