Answer: A developmental psychologist would probably describe Emily's temperament as Easy.
Step-by-step explanation:
Developmental psychologists specialize in analyzing the stages of development that human beings go through. Temperament is a biological component of our personality, we are born with a defined temperament that manifests itself more or less stable throughout our lives.
In babies, it is possible to identify three different types of temperament; the easy, the difficult and slow-to-warm-up.
The easy children are those who easily adapt routines and their surroundings, the difficult children do not regularly adapt routines and react negatively to changes in their environment, and slow-to-warm-up children have a temperament similar to easy children, however, their reactions tend to be slower and with less intensity.
I hope this information can help you.