Please answer all questions.

1		The classification of people into groups on their common attributes is called social .
2		Research indicates that people pay less attention to those below them in the hierarchy and are more likely to judge people based on social stereotypes.
3		A habitual tendency to attribute negative events to external, unstable, and specific causes, and positive events to internal, stable, and global causes is a/an explanatory style.
4		Fixed ways of thinking about people that put them into categories and do not allow for individual variation is called a .
5		The tendency to judge the frequency or probability of an event in terms of how easy it is to think of examples of that event is called a(n) heuristic.