Final answer:
The interactionist theory of personality suggests that an individual's personality is influenced by interactions within their mind, genetic constitution, emotional state, and environment.
Step-by-step explanation:
The theory that an individual's personality and reactions to situations are the result of interactions within their mind, genetic constitution, emotional state, and environment is called the interactionist theory of personality. This theory suggests that both nature (genetic and biological factors) and nurture (environmental and cultural factors) play a role in shaping an individual's personality. According to this theory, our genetic predispositions, such as temperament, interact with our environment to influence our personality traits and behaviors.