Because of the findings that Mischel emphasized, many psychologists focused on an alternative to the trait perspective. Both twin and adoption studies have researched heritability of "personality" in more general terms, however studies typically conclude that personality is definitely influenced by inheritance.
It is required to think about a problem or situation differently. Most people would probably say no, pointing to some exception in their behavior that goes against the general pattern that others might see. It should, however, give you an idea of some of the facets making up each of the Five-Factor Model.
The first things that came to mind when I heard the term leadership were famous names of leaders from history, and not what made them considered to be leaders, or how they came about becoming leaders.
The validity is based on a personal review of my results. Describe each of the Big Five personality traits, and the low and high end of the dimension.