In an experiment, the variable that the researcher manipulates is called the:

Which term has come to mean "a chaotic uproar" and derived its name from a London hospital where mentally ill patients were treated in horrendous ways?

A)Bedlam B)Hysteria C)Furor D)Turmoil

Chemically speaking, why do people who are methamphetamine addicts sometimes display schizophrenic-like behavior?

A) Amphetamines are chemically similar to the medications used to treat schizophrenia. B) Amphetamines increase dopamine in the brain, leading to a schizophrenic-like response. C) Amphetamines decrease dopamine in the brain, leading to a schizophrenic-like response. D) Amphetamines are used to treat the unpleasant side-effects of schizophrenia.