05_infoprocessing

05_infoprocessing - 4/19/10 Information Processing...

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4/19/10 1 Information Processing Approaches Big Picture Mechanisms of Change Overview of Theory Developmental Specifics Neo-Piagetian Theories 1 Big picture Computer as a model for human cognition Thinking = information processing Processes: Acquire, store, and retrieve information Structures: Short-term memory, Long- term memory 2 Assumptions Memory is a dynamic system Memory has limited capacities: Space Resources Time Children’s ‘immature’ behavior is indicating that the task demands are overloading the mind’s capacity 3
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4/19/10 2 Development of various cognitive tasks 4 Mechanisms of change Change is continuous Change is self-modification actively generated by the child “Hardware” Biological structures Brain, neurons, synapses, myelin “Software” Processes (Attention, Encoding, Retrieval) Strategies 5 Atkinson & Shiffrin (1968) Information Processing Model Stimuli Sensory Store Short -Term Store Long -Term Store 6
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4/19/10 3 Sensory Stores Visual and Auditory Briefly holds incoming information Superficial processing Very short duration 8 Iconic Sensory Store 9 Short-Term Memory - Processes Attention Attending to information in the sensory store transfers it to STM Rehearsal Maintain information in STM by repetition Retrieval Access memory in LTM and return it to STM
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4/19/10 4 Capacity of STM For normal adults 12 Children’s memory span for digits. (Adapted from Dempster, 1981)
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05_infoprocessing - 4/19/10 Information Processing...

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