Crime seriousness as a determinant of accuracy in eyewitness identification

65 university students witnessed a staged theft in which either an expensive object (high seriousness) or an inexpensive object (low seriousness) was stolen, and Ss either had prior knowledge of the object's value or learned of its value only after the theft. When witnesses had prior knowledge of the object's value, accurate identification of the thief was more likely when the theft was of high rather than of low seriousness. When knowledge of the crime's seriousness was gained after the theft, seriousness did not affect identification accuracy. Results suggest that the effect of perceived seriousness on accuracy is mediated by processes that operate during rather than after the viewing interval, processes such as selective attention and encoding. The study also found that certainty of choice in the identification task was unrelated to accuracy of choice.