A dog that eats canned food typically comes running to its owner when it hears the can being opened. The sound of the can opener in this instance is the __________

Research prompted by the "black box" controversy about using second-generation antidepressants with younger patients shows that taking second-generation antidepressants:

A) decreases younger patient suicide rates. B) decreases younger patient suicide rates overall, although some individuals are more likely to commit suicide. C) increases younger patient suicide rates overall, although some individuals are less likely to commit suicide. D) has no predictable effect on suicide rates in younger patients.

Baby Alan started opening his mouth differently for a nipple than for a spoon. Baby Alan is probably in Stage ___ of Piaget's sensorimotor stages

A) 2 B) 3 C) 4 D) 5