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Unformatted text preview: Chapter 5: Seeing, Thinking, and Doing in Infancy Perception Vision Active child theme is vividly embodied by infants eager exploration of their environment. Continuity/discontinuity comes up repeatedly in research that addresses the relation between behavior and development in infancy and development later in life Mechanisms of change explores the role that variability and selection play in infants development. Sociocultural context is early motor development Sensation- the process of basic information from the external world by the sensory receptors in the sense organs (Eyes, skin, etc) and brain Perception- the process of organizing and interpreting sensory info Roughly 40-50% of our mature cerebral cortex is involved in visual processing Vision improves rapidly in their first few months Preferential-looking technique- a method for studying visual attention in infants that involves showing infants two patterns or objects at a time to see if the infants have a preference for one over the other Newborns like to look at something rather than nothing Habituation- repeatedly presenting a stimulus to an infant unitl the infants response declines Visual acuity- the sharpness of visual discrimination Contrast sensitivity- the ability to detect differences in light and dark areas in a visual pattern Cones- the light sensitive neurons that are highly concentrated in the fovea (the central region of the retina) Cones have a different size and shape and are spaced further apart than in adulthood They reach full adult acuity present by around 6 years of age By 2 or 3 months of age infants color vision is similar to that of adults Infants are attracted to moving stimuli Eye movements are jerky By 2 or 3 months, infants are able ot track objects smoothly and then they are able to do so if the object is moving slowly...
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- Spring '10
- Developmental Psychology