According to erikson, development is best reflected in the relationship with a caregiver intelligence test scores mastery of specific cognitive skills resolution of psychosocial tasks

According to erikson, development is best reflected in  resolution of psycho-social tasks. Erikson’s psychosocial theory of development considers the impact of external factors, parents and society on personality development from childhood to adulthood. According to Erikson’s theory, every person must pass through a series of eight interrelated stages over the entire life cycle

The answer would be dogs.