Temperament is the correct answer.
Often, the term temperament is used to describe the predominant mood or mood pattern of one individual. In Psychology, temperament is an aspect of a personality and consists on differences in a person's behavior. Neuroticism, impulsivity and sociability are some of the temperament traits found between one person and the other and are displayed in emotions, activity and self-regulation.Temperament is epigenetic which means that is is originated in the genes but can also be affected by early life experiences.