Studies of the “wisdom of crowd” effect suggest that

a.  groups are particularly effective when working on extremely difficult problems.
  b.  once the group reaches 5 members, it reaches its maximum level of “wisdom”.
  c.  making decisions by averaging individuals judgments is, in some cases, both efficient and accurate.
  d.  the “crowd” members, to become accurate, must initially discuss the issue among members.

  c.  making decisions by averaging individuals judgments is, in some cases, both efficient and accurate.

Psychology

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_______ is a personality characteristic associated with a lower rate of stress-related illness

Fill in the blank with the appropriate word.

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PET scan studies have found that the prefrontal cortex of predatory murderers has less brain activity than does the prefrontal cortex of men who commit "heat of passion" murders

Indicate whether this statement is true or false.

Psychology