A mother and her infant son are being tested by Aisworth?s Strange Situation procedure. After the mother has left and comes back onto the room the child acts like he is mad at the mother. This child is said to be?

Personality development encompasses the dynamic construction and deconstruction of integrative characteristics that distinguish an individual in terms of interpersonal behavioral traits. Personality development is ever-changing and subject to contextual factors and life-altering experiences. (Source: Wikipedia)