Procedure for Key research Barkley and Galvin

Visited the lab on two occasions for an intake session and FMRI scan sesssion 1 - asked question about their income , to control the their perceptions of the risks associated with gambling, gave 20 dollars to be used in the next session session 2 - came back a week later, FMRI scan whilst gambling , shown a spinner of what they could win and given a choice if they wanted to gamble , gamble played at the end to see if they could add to their money or loose it