The combination of characteristics or qualities that form an individual's distinctive character, which includes but is not limited to their temperament.
A psychological debate about whether human behavior is determined by the environment (nurture) or genetic inheritance (nature). Temperament is often cited in this debate as it appears early in life and seems largely unaffected by environmental influences.
Easy/Difficult/Slow-to-Warm-Up Temperaments: These are three types of temperaments identified by psychologists. Easy children are generally happy and adaptable; difficult children tend to be more irritable and harder to soothe; slow-to-warm-up children have a low activity level and may withdraw from new situations but gradually become more receptive with repeated exposure.