Final answer:
According to Buss and Plomin, temperaments include all of these answers are correct. Temperament refers to inborn, genetically based personality differences that are characterized by characteristic ways of behaving, reactivity, and self-regulation. Buss and Plomin also suggest that genes responsible for temperament might be on the same chromosome as genes responsible for certain facial features.
Step-by-step explanation:
According to Buss and Plomin, temperaments include all of these answers are correct. Temperament refers to inborn, genetically based personality differences that are characterized by characteristic ways of behaving, reactivity, and self-regulation. Buss and Plomin also suggest that genes responsible for temperament might be on the same chromosome as genes responsible for certain facial features.