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Area of Science:

  • Cognitive Psychology
  • Behavioral Economics
  • Computational Neuroscience

Background:

  • Human random-sequence generation (RSG) is often limited.
  • RSG improves in competitive game environments with feedback.
  • It is unclear if explicit instructions enhance RSG or if improvements transfer.

Purpose of the Study:

  • To assess human randomness in games.
  • To investigate if explicit instructions improve RSG.
  • To determine if RSG improvements transfer to non-game settings.

Main Methods:

  • A pre/post intervention study using a Rock-Paper-Scissors game.
  • Manipulation of participant awareness of computer strategy (informed vs. uninformed).
  • Assessment of RSG using a compressibility metric.

Main Results:

  • Human RSG in games reached levels statistically indistinguishable from computer pseudo-random generators.
  • Explicitly informing participants to be random did not further improve RSG.
  • Improved RSG in the game setting did not transfer outside the game environment.
  • Underrepresentation of long repetitions explained up to 29% of RSG variability.

Conclusions:

  • Competitive game environments enhance human RSG to near-perfect levels.
  • Explicit instructions do not boost RSG beyond game-induced improvements.
  • RSG improvements are context-specific and do not generalize.
  • Repetitive choices are a key factor limiting human randomness.