Ancient greeks believed imbalances in caused abnormality, while people living during the middle ages believed it was caused by however, many contemporary psychologists try to understand psychological disorders in terms of the model

The answer is: bile; exposure; psychodynamic
In every period history, the main problems that cause emotional distress toward mankinds are keep changing. The major cause of psychological disorder in today's society is most likely came from works and personal relationship rather than the fear to be killed by our enemy