04-23 Lecture Slides (Final)

Ignore all friction assume m2 does not make contact

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Unformatted text preview: lem Version 1: A man bought a horse for $60 and sold it for $70. Then he bought it back for $80 and again sold it for $90. How much profit did he make? Version 2: A man bought a brown horse for $60 and sold it for $70. Then he bought a white horse for $80 and sold it for $90. How much profit did he make? Error rates are much higher for Version 1 than for Version 2! (2) Incorrect or Incomplete Representations of the Problem n༆  Representational problems sometimes stem from working memory limitations It is difficult to accurately represent all relevant pieces of information in working memory ¨༊  Examples: ¨༊  n༆  The “brothers and sisters” puzzle Brothers and sisters have I none. That man’s father is my father’s son. Myself That man’s father is myself. My son (2) Incorrect or Incomplete Representations of the Problem n༆  Representational problems sometimes stem from working memory limitations It is difficult to accurately represent all relevant pieces of information in working memory ¨༊  Examples: ¨༊  n༆  n༆  The “brothers and sisters” puzzle Problems from a matrix reasoning test 5 4/23/13 (3) Lack of Relevant Domain- Specific Knowledge n༆  General heuristics often need to be augmented by domain- specific knowledge ¨༊  Playing chess n༆  n༆  ¨༊  Solving physics problems n༆  n༆  n༆  Game rules Effective game strategies Determine a formula for the magnitude of the force F exerted on the large block (m3) in the Figure so that the mass m1 does not move relative to m3. Ignore all friction. Assume m2 does not make contact with m3.! Laws of physics Relevant formulas Not having such knowledge (or failing to access i...
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This note was uploaded on 02/18/2014 for the course PSYC 2145 taught by Professor Cheriking during the Spring '07 term at Colorado.

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