According to the ______________ theory, we want the best we can get from relationships and may need to trade what we have for something the partner is offering

If a scientist wanted to use scientific observation to see how frequently schoolchildren share food at lunch, she could:

give half of them candy and see how many would share. mingle with the children and ask them about sharing. bring a small group into her laboratory and observe them eating. watch the children from an unobtrusive spot in the school lunchroom.

When a person's body develops a chemical dependency to a drug, that is called:

A) drug abuse. B) physical addiction. C) withdrawal. D) intensified drug use.