3-23-07 RtrvlTSDHO

3-23-07 RtrvlTSDHO - Cognition: Retrieval March 23, 2007...

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    Cognition:  Retrieval March 23, 2007
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    Lecture Outline Retrieval, Part 1: Recognition. Time course of retrieval in infants. Stages of retrieval. Signal Detection Theory.
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    Reminding
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    The Time Course Of Retrieval  In 3-month-old Infants Train 3-month-old infant to kick at a mobile. Remind infant of mobile 13 days later. Wait, then bring back mobile: 15 minutes: Nothing. 1 hour: Again nothing. 8 hours: Still nothing. 24 hours: A little kicking. 72 hours Same amount  of kicking as in training!
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    Learning & Reminding
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    The Time Course Of Retrieval  In Infants Time to retrieve the memory after a  reminder.  3 month-old: 72  hours  6 month-old:        4  hours  12 month-old:     < 1   second
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    Stages Of Recognition & Brain Feature Analysis Stage. Comparison Stage. Response Stage. Vision Hearing Occipital Cortex Temporal Cortex Medial temporal Cortex: Limbic system  +  thalamus  +  surrounding   cortex Temporal Cortex                  Prefrontal   cortex
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    “Products” Of Recognition Match input with memory (see next slide) Identification (categorization) Sense of Familiarity
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    Identification Skills People are extremely good at  performing exact matches on: Visual input. Sounds. Words. Not so good at recognizing smells. But smells are not forgotten as easily. People good at recognizing pictures are  not superior at recognizing words.
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    Picture Recognition Observers Study Set Size Immediate Retention Up to One week At least a month 4-year olds 100 98% 90% 67% adults 612 97% 87% 58% adults 2500 91% adults 10,000 85% At least 5 second presentation rate
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This note was uploaded on 04/02/2008 for the course PSYCH 340 taught by Professor Ackroff during the Spring '07 term at Rutgers.

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3-23-07 RtrvlTSDHO - Cognition: Retrieval March 23, 2007...

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