Dr. Love believes that it is normal for a six-month-old to throw tantrums when she doesn't immediately get what she wants. Dr. Love's views are most in line with those of

Pavlov placed food in the mouths of the dogs, and they began to salivate. Pavlov's student noticed that after a few days the dogs began to salivate at the sound of the student's footsteps. The salivation to the sound of the footsteps was a

a. primary reinforcer. b. positive reinforcer. c. conditioned response. d. secondary reinforcer. e. negative reinforcer.

Matthew is about mid-way through puberty. In tears, he tells his camp counselor that he won't go swimming without his shirt because his breasts are enlarged. Which of the following is the best advice for Matthew?

a. "All boys experience enlargement of the breasts during puberty." b. "One out of four boys experience breast enlargement, which goes away in about a year." c. "About half of all boys experience breast enlargement, which goes away in about a year." d. "One out of a hundred boys experience breast enlargement, which goes away during adulthood."