A person with an XXY chromosome pattern has which of the following conditions?

An infant who misses her teddy bear at bedtime and will not go to sleep without it is demonstrating that she does not yet understand the concept of object permanence

Indicate whether this statement is true or false.

Ivan Pavlov studied the reflexive flow of saliva in dogs. He used meat powder or other food to trigger the salivation. It was later observed that the salivation in the dog was triggered even before the food was placed in its mouth

In this experiment, ________ was the unconditioned response. a. food b. thoughts of anticipation c. salivation d. the sight of the food dish