What is the term that Thomas and Chess used to describe babies who have negative moods,are slow to adapt to new situations,and tend to withdraw when confronted with a new situation?

Question

Quizplus · Accepted Answer

Thomas and Chess used the term "difficult babies" to describe infants who display negative moods, slow adaptability to new situations, and a tendency to withdraw from new experiences.

What Is the Term That Thomas and Chess Used to Describe