Explaining contradictory findings

• What did Yerkes and Dodson (1908) argue?

  That the relationship between performance and arousal/stress is curvilinear rather than linear
• What did Deffenbacher (83) find?

  That lower levels of anxiety did produce lower levels of recall accuracy
• What does recall accuracy do?

  Increases with anxiety up to an optimal point
• When was a drastic decline in accuracy seen?

  When an eyewitness experience more anxiety than the optimal point