In the LOCATION@1 prior to the MISC@1 psychiatrists such as PERSON@1 diagnosed some slaves with drapetomania , a mental illness in which the slave possessed an irrational desire for freedom and a tendency to try to escape .

In the LOCATION@1 , before the MISC@1 , the psychiatrist PERSON@1 described drapetomania , an alleged disease that gave the slave an `` irrational '' tendency to try to escape .
