Personality psychologists may attempt to apply personality theory to one person’s life, such as Adam Lanza, the shooter from the Sandy Hook elementary school tragedy, to help understand the story behind why and how a person could behave in the ways he did. This method is called a(n):

Factorial Personality Inventory

Explanation:

The Factorial Personality Inventory is a psychological method that has as main objective to evaluate the personality of an individual and from it to devent and analyze all the motivations, behaviors, actions and thoughts that an individual may have about something or someone. This method could be used to assess a person's life, like Adam Lanza, the sniper of Sandy Hook's elementary school tragedy, to help understand the story behind why and how a person could behave that way.

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