Researchers Alexander Thomas and Stella Chess found that about two-thirds of infants can be classified as having either an easy, difficult, or slow-to-warm-up temperament.

Question

Quizplus · Accepted Answer

Alexander Thomas and Stella Chess did indeed find that approximately two-thirds of infants can be categorized into one of three temperamental categories: easy, difficult, or slow-to-warm-up.

Researchers Alexander Thomas and Stella Chess Found That About Two-Thirds