In cattell"s view, these findings had the potential to assist in. Courts of justice : around the same time, a number of other psychologists began studying testimony and suggestibility. For example, in his classic work, la suggestibilit (1900), the famous french psychologist alfred. Highly misleading questions resulted in the least accurate answers: a german psychologist named william stern also began conducting studies examining the suggestibility of witnesses. The reality experiment that is now commonly used by eyewitness researchers to study eyewitness recall and recognition can in fact be attributed to stern. Stern found that the testimony of participants was often incorrect. In addition, he found that recall was the worst for portions of the event that were particularly exciting (i. e. , when the revolver was drawn). This led him to conclude that emotional arousal can have a negative impact on the accuracy of a person"s testimony: hugo munsterberg played a significant role in establishing the field of forensic psychology in.