Meanwhile, the reward for information leading to the arrest of the girls' killer continues to grow. But the big dollars aren’t giving investigators the big break they need to make an arrest.
Researchers have found that too often cash isn’t enough to get people talking.
The reward hit $219,000 Monday. It is a lot of money and a lot of people can’t understand why that much cash hasn’t pried lose the information police need to find those responsible for the deaths of the teenagers.
Even more surprising, investigators said phone and emailed tips from the public have declined significantly since the reward topped $200,000.
That promise of a big pay day, researchers call a "carrot on a stick," isn’t as powerful as many think.
"No," Spencer Headworth, assistant professor of sociology at Purdue University said. "Unfortunately, we can say not most of the time."
Headworth cited research showing rewards go unclaimed 90 percent of the time, in many instances because of fear.
"Fear of incrimination, if they were involved in the crime in some way. Fear of reprisals from the person or person responsible, or others associated with them," Headworth explained.
http://www.wthr.com/article/parents-of-murdered-delphi-girls-to-speak-publicly-thursday
