When a workgroup is high inâ deceit,â amorality, and rudeness tend to be more pronounced?

The answer is: psychopathy and aggression
Psychopathy will make a person unable to feel normal level of empathy, which make them much more likely to conduct a deceitful or amoral action.
Aggression would make a person unable to restrict their emotional impulse like average person do, making them tend to be more rude and more prone to violence.

Ghana, first of the great medieval trading empires of western africa (fl. 7th–13th century). it was situated between the sahara and the headwaters of the sénégal and niger rivers, in an area that now comprises southeastern mauritania and part of mali.