Introduction to Psychology 10th Edition by Rod Plotnik,Haig Kouyoumdjian

Exercise 33

Researchers found that about one-fourth of infants show avoidance, anxiety, fear, and increased physiological arousal when in a strange or novel situation. These individuals are called shy or _____, and the majority remain the same into adulthood. This finding supports the idea that temperaments appear early, are stable across time, and are partially under genetic control (nature).