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SNKYO

SNKYO. Nate R. and Arin T. A Study on Adult Working Memory. Background. Feigenson , Carey, and Hauser 2002 Study involving crackers – suggested that infants cannot keep track of more than 3 objects in a chunk.

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SNKYO

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  1. SNKYO Nate R. and Arin T. A Study on Adult Working Memory

  2. Background • Feigenson, Carey, and Hauser 2002 • Study involving crackers – suggested that infants cannot keep track of more than 3 objects in a chunk. • Each bucket represents a unit of memory or a chunk. In this case, chunks are delineated by the physical space between the buckets. X

  3. Background • Feigenson & Halberda 2004 • Showed that WM is not limited to tracking 3 objects per se but 3 chunks of representation, each of which may contain up to 3 objects. • Space can be the divider of chunks. Suggests that instead of representing each individual, WM groups objects into smaller and more manageable chunks… • Units in WM can be individuals or chunks… but what about large sets? • Feigenson 2008 • In WM, what about larger number of things. How many boys and girls are in the lecture room? • Placed one type, 2 type, 3 types and 4 types of objects in two buckets

  4. Sets in WM

  5. Sets in WM What if the four objects have overlapping attributes- size and shape? In other words, each item is a member of more than one “set” Differ in size, color, texture, shape, and category dimensions Overlap in shape and size dimensions. Overcome capacity limits?

  6. 2X2 Overlapping Sets • Hypothesis • By taking advantage of overlaps among object attributes, WM efficiently keeps track of more than 3 sets at the same time. • Two attributes examined here are size and shape • Four individual objects – two blocks and two balls, each of which can be either large or small in size

  7. Methods Labeling Condition: As objects are dropped in a bucket, the subject says either the shape or size of each object Shape Size Probed Dimension: Subject is asked which bucket has more objects of one shape or size Shape Size

  8. Results • Only the answer to the first question counts to eliminate bias • Congruent N=7 Incongruent N=4

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