When we want to know how much a stimulus must change in order that people will notice the

A child was walking down the street with his mother and called the black top "tarmacs." Presumably, he added the "s" because it was a long road. What does this reveal about how children learn language?

What will be an ideal response?

The term teratogen refers to __________

A) any environmental agent that causes damage during the prenatal period B) a limited time span during which a part of the body is biologically prepared to develop rapidly C) a rapid period of prenatal neurological development D) a synthetic hormone used to prevent miscarriage