According to your text, most scholars who study adolescence today work in the discipline of

Which of the following is an explanation of why drug abusers prefer heroin over morphine?

a. Heroin is cheaper than morphine. b. Morphine enters the brain faster than does morphine. c. Heroin is less lipid-soluble than is morphine. d. Heroin exerts effects on the brain faster than does morphine. e. Morphine is cheaper than heroin.

Trying to prevent a thought often makes it even more intrusive

a. True b. False Indicate whether the statement is true or false