Psychology Terms. Please Help?

In a few lines, can someone help me by describing these key psychological terms or ideas.





1 Two psychologies - causal and normative


2 The laboratory


3 The placebo effect


4 The Freudian unconscious


5 Long-term potentiation


6 Classical conditioning and instrumental learning|||Time to do your own homework. Google works. (psychology professor)|||I don't know all of these but Freud was big into sex, so I think sex would have something to do with #4. And you know what a placebo is. You give somebody a sugar pill and tell them it's some potent drug that will cure them. Usually, it works, too. Causal psychology is probably causing some reaction. Like ringing a bell to cause a dog to salivate. Normative is probably normal behavior. Long term potentiation is probably what you figure the subject is going to do over the years. Or at least what they are capable of doing. Classical conditioning is probably like how all the school kids get taught the same stuff so our society becomes the same with the same mindsets. Instrumental? Hmm. Sounds kinda weird. Must mean that someone makes something happen to change the outcome. Maybe a teacher gives special attention to one kid and that kid becomes famous as a result. Or, if the teacher gave the kid negative attention, he turned out to be a criminal. And we all know what a laboratory is.