Though a simple lesson, this will be one of the most powerful lessons you can do in either your Psychology or Sociology course.
Download the video "Eyewitness Testimony" Parts 1 and 2 with Leslie Stahl from YouTube.
When you have that ready, present Powerpoint Slide 1 giving 10 minutes for students to respond and discuss their responses in small groups.
Show the video.
After the video lead a discussion allowing students to discuss their feelings. Then present them with Powerpoint Slide 2 and have them answer the questions independently, not in the groups.