Folklore has sayings that "birds of a feather flock together" and "opposites attract," and current research on attraction supports both sayings

An example of a developmental change thought to be caused by maturation is

a. walking. b. reading. c. riding a bike. d. dressing oneself.

When young children with psychosocial dwarfism are removed from their emotionally inadequate environments,

A) their dwarfism is permanent, even with immediate treatment. B) they rarely exhibit catch-up growth. C) they must be given high levels of iron to prevent anemia. D) their growth hormone (GH) levels quickly return to normal and they grow rapidly.