Experimental group

• who was in the experimental group?

  murderers who plead non-guilty by reason of insanity
• how many participants were in the experimental group?

  41
• what were the participants instructed to do?

  be med free for two weeks prior to scan - measured with urine test
• how many of each gender?

  39 men

  2 women
• what was the mean age?

  34.3 years
• all had form of mental impairment
• how many had head injury?

  23
• how many had a learning disability?

  3
• how many had psychotic drug abuse?

  3
• how many had affective disorders (depression)?

  2
• how many had personality disorders?

  2
• how many had epilepsy?

  2
• how many had schizophrenia?

  6