In classical conditioning, if the US comes before the CS, itis called

Several of her friends suspect that Marnie is using some sort of drug. She is very thin, stays awake for long periods of time, and is often jittery, nervous and somewhat paranoid. If Marnie is using a drug, it is likely to be _____.

Fill in the blank(s) with the appropriate word(s).

In the United States, about how many hours per day does the typical child aged 2 to 4 spend watching television or using electronic media?

less than one about two three more than eight