Warm-up (December 14) Look at your notes from the documentary and for each of the cases (Larry Gene Bell and Wayne Williams) answer the following questions: 1.What crimes were being committed? 2.Describe the profile the police created of the suspect. 3.How did the police fine the suspect 4.What evidence confirmed that the suspect committed the crime?

Wayne Williams 1.Young black children and teens in poor neighborhoods were disappearing; when they found the bodies they found that they had been strangled 2.Black male who is a police buff; likely impersonates a police officer 3.Police officer pulled him over after hearing a splash by a river 4.Hair and fiber evidence; reaction in court also showed capacity for violence (which influenced they jury)

Larry Gene Bell 1.Kidnappings and calling the family and police 2.White male, likely overweight, meticulous and neat, not sociable? 3.Phone number on a notepad led to a couple’s house; couple mentioned his name 4.Hair samples, eyewitness testimony, questioning evidence

At the beginning of the video John Douglas said, “In order to understand the artist, you have to examine the artwork”. Explain how this relates specifically to his pioneering work in the FBI.

Geographic Profiling Video – “Geographic Profiling Helps Catch Cat Burgler” What’s a Cat Burgler?

Another video… This one is from Britain. They use geographic profiling too. Actually it is much more common there

In geographical profiling, the emphasis is to tell you… Where an offender is located **Useful for narrowing down search areas.

What principle is important as a basis for geographical profiling? Crimes are not random – there is a reason they take place where they do.

What is the least effort principle? People will take the easiest option In geographical profiling…the offender chooses the closer location because it is easier.

What is distance decay? Crimes will decrease in frequency as you travel further from the offender’s home.

What is the buffer zone? The area close to home where a person is well known Crime is not likely to occur here

What is a mental map or mental schemata? - internal representations of an area that reflect how a person typically interacts with their environment

Where is an offender likely to commit a crime? In a place where they feel comfortable Familiar – can be learned; “testing”

What is the difference between a muarader and an offender? Maurader – based at home; crimes tend to be spread out Commuter – travel; crimes close together

What do you need to be sure of to use this method? -Crimes committed by the same person -Data captures majority of crimes -Crimes have not evolved -Enough crimes “May not be seen as adding anything to investigations, if their existing methods are at least as good”