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Cognitive Development.docx

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Western University
Psychology 1000

Cognitive Development Issues in Development Neural Development Visual Development What influences development? How does the brain change in the newborn? How does the visual system change over the first few months of life? Note  Left frontal lobe more involved in positive emotions, right in negative  More activity in left when watching happy films, more in right for sad/disgusting films  Visible in 10-moth old infants What influences development  Nature  Maturation Vs. Nurture  Learning  Obviously  Interaction  Nature determines the range  Nurture chooses the alternatives Continuous Development  Smooth, continual change  Quantitative difference Normative vs. Individual  Normative: o Typical sequence of change o Look for consistency o Methodology is cross-sectional  Individual: o Consistency not there o Look and individual o Methodology is longitudinal Brain development  100 – 200 B neurons at birth  Neurons not produced after second trimester  Increase in weight (350 – 1400 g) due to glial cells and myelination  Number of synapses increase rapidly  Cortical development “mirrors” emergence of abilities o Frontal lobe develops last Taste and Smell  Very much like adult o Suck faster fro sweet liquid o Reject salty liquid o Pleasant expression for bananas o Frown for rotten eggs o Suggests… Hearing: At birth  Respond to wide vari
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