The field of is involved in the scientific study of behavior and mental processes.

The field of Psychology is involved in the scientific study of behavior and mental processes.

Explanation:

Psychology is a discipline related to the scientific study of mental processes as well as behavior. Psychology usually utilizes this knowledge in many aspects referring to human activity, this includes people's daily lives and in some cases the treatment of illness related to the mind.

Psychology's purpose is trying to explain the different mental processes and behavior that occur in individuals. The interaction that exists between these processes usually occurs on a systemic level.  

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