TB4 Lecture 4; Decision making and the brain

The main objectives in this lecture are;

  • Expected value v.s expected utility
  • Reward and the brain
  • Temporal discounting
  • Social decision making
  • Heuristics in decision making
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  • Created by: mint75
  • Created on: 25-05-15 17:59

1. What did a study by Matsumoto & Hikosake (2009) find?

  • DP neurons will always fire with a pleasing stimulus
  • A subset of DP neurons in the midbrain responded to positive but not negative events.
  • A subset of DP neurons in the midbrain responded to both positive and negative events.
  • A subset of DP neurons in the midbrain responded to negative but not positive events.
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Other questions in this quiz

2. In a study where a reward was either what was expected or more/less than expected, what was found?

  • When reward was more than expected, there was less DP activation and vice versa in the pFC
  • When reward was more than expected, there was less DP activation and vice versa in the ventral tegmental area
  • When reward was more than expected, there was more DP activation and vice versa in the ventral tegmental area
  • When reward was more than expected, there was more DP activation and vice versa in the pFC

3. What is loss aversion?

  • The tendency for people to strongly prefer avoiding loss than acquiring gains
  • The tendency for people to strongly acquiring gains than avoiding loss
  • The tendency for compulsive gambling to start after a traumatic loss type event
  • Perceiving probability in a highly subjective manner, overestimating the chances of low probability events, and underestimating high ones

4. What is the framing effect?

  • People tend to avoid risk when a positive frame is presented, but sees risk more when a negative frame is presented (even when options are the same! For example saving people, or killing people in vaccine example).
  • When the expected utility exceeds the objective value
  • People tend to avoid risk when a negative frame is presented, but sees risk more when a positive frame is presented (even when options are the same! For example saving people, or killing people in vaccine example).
  • When the objective value exceeds that of the expected utility

5. Which areas seem to be implicated in immediate smaller-sooner (SS) rewards?

  • Putamen, mPFC, VStr
  • Posterior cingulate (PCC), mPFC, VStr
  • DLpFC, LOBFC
  • DLpFC, LOBFC, VStr

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