Take your learning a step further by testing your critical thinking skills on this scientific problem solving exercise

Danny just happened to be driving into the parking lot of a convenience store the night the attendant was killed in a holdup. He caught a quick glimpse of a fleeing man who seemed to be carrying a handgun. When the police arrived at the scene, Danny couldn't say much about the gunman's appearance. Nevertheless, they took him to headquarters and showed him hundreds of mug book photographs. After many frustrating hours, during which Danny was repeatedly shown a photo of a man named Raymond but was unable to identify anyone conclusively, the investigator handed him Raymond's photo and said, "We know this man visited the convenience store the night of the crime. Did you see him running from the store?" When Danny said he wasn't sure, he was allowed to leave and asked to think more carefully about what he had seen that night.

Three weeks later, Danny was asked to pick the killer from a five-man lineup that included Raymond. Although he remembered feeling uncertain of the identity of the man when he was first questioned, Danny was surprised at how easily and confidently he picked Raymond from the lineup now.

1. What's going on in this situation? What problem are the police trying to solve?

2. Why couldn't Danny identify the gunman right after he witnessed him fleeing from the store?

3. What is wrong with the police's questioning procedures?