"Black tar" is

A. a name given heroin from Mexico that is brown or black in its pure form.
B. a type of street heroin that has been "cut" with powdered charcoal.
C. a synthetic opioid that is twice as potent as pure heroin.
D. an opium extract that is imported from Southeast Asia.

A

Psychology

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The death of a spouse brings about drastic changes in economic and social circumstances

Indicate whether the statement is true or false.

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When a reward or other pleasant event follows a response, which of the following is being used?

a. bribe b. positive reinforcement c. negative reinforcement d. conditioned stimulus

Psychology