Caffeine, impulsivity, and memory scanning: A comparison of two explanations for the Yerkes-Dodson Effect

  title={Caffeine, impulsivity, and memory scanning: A comparison of two explanations for the Yerkes-Dodson Effect},
  author={Kristen Joan Anderson and William Revelle and Mary Jean Lynch},
  journal={Motivation and Emotion},
Two explanations for the Yerkes-Dodson Effect (1908) were tested. Easterbrook (1959) proposed that arousal reduces the range of cue utilization. Thus, arousal should interfere with the capacity for simultaneous (dual) memory scans. In contrast, Humphreys and Revelle (1984) proposed that arousal facilitates sustained information transfer but interferes with short-term memory. Arousal should thus reduce the time needed to prepare to respond but increase the time needed to scan memory. Either… 

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