Scientists have long studied the link between below-average IQsand criminal behavior, and a sampling of the fine crop of fools whorobbed credit unions in 2015 provides superb evidence of thatcorrelation.

Here are some of our unfortunate favorites from 2015.

5. Obviously didn't get intoBerkeley.

The Louisville, Ky.-based Jefferson County FCU is offering$5,000 to anyone who can identify the dimwit who hid in the bushesoutside its branch, accosted some employees as they arrived for work and then stolecash from the credit union, all while wearing blue shoes and ahoodie emblazoned with Berkeley – a university with a 17%acceptance rate.

The robber put three employees in the vault and then ran acrossthe street where he ditched his shoes, pants and Berkeleysweatshirt behind a building, according to local reports.

4. Smart you are not.

Readers may recall “Little Darth Vader” from a CU Times list earlier thisyear. He allegedly robbed the North Carolina-based PinevilleState Employees Credit Union and was arrested.

Now he has a much taller colleague on the Dark Side: Jabba theRobber. Jabba allegedly robbed a branch of the Kent, Wash.-basedCascade Credit FCU in April after knocking over a Wells Fargo inMarch. At 6'2″, Jabba – who got his nickname from the FBI – isalmost a foot taller than Little Darth, who comes in at a dainty5'5″, according to local news reports.

The Force prevailed – like Little Darth, Jabba was alsoarrested.

3. Slowest getaway car ever.

Coming in a number three is the jerk who used a tractor to raman ATM at a Green River CU branch in Rutland, Vt. The suspectapparently couldn't get any money out of the ATM and then decidednobody would notice if he moseyed off in the tractor. As theyarrived, police apparently saw the guy jump off the running tractorand escape into the woods.

“The tractor continued to travel through the lawn behind theapartments and stopped when it struck a large tree,” a local reportsaid.

The suspect is still on the lam.

2. When membership doesn't pay.

Just before Halloween, police arrested a 45-year-old man afterhe allegedly attempted to rob a branch of the Archive FinancialCredit Union in Meriden, Conn. After reaching over the counter andgrabbing a teller, he took cash from a register and drove away.

Turns out, the guy was a long-time member, according to police reports, so the creditunion simply gave the police photos of the assailant from when hejoined the credit union. The police obtained his fingerprints fromthe deposit slip and a search of his house turned up the clothes hewore during the robbery, reports said.

1. Oh yeah, the money!

Demonstrating a complete lack of knowledge about how bankingworks, our winner this year is an Indiana man who ended up in jailafter allegedly trying to rob a branch of the South Bend,Ind.-based Teachers Credit Union.

“When they arrived, police say their officers were told that aman had entered the mortgage branch office and demanded money,” alocal news station reported. “Police say workers told them thatthey instructed the suspect that because they were a mortgagebranch, they had no cash in the building, and that the suspect ranaway afterward.”