Tasks that can be done with little involvement of attention are more likely to be labeled __________

The process of setting up two or more groups in an experiment is called _____

a. correlation b. observation c. random assignment d. selection

Despite its dangers, a young man continues to take cocaine because of the feelings of euphoria it produces for him. This powerful arousal of his nervous system is probably due to cocaine's ability to ________

a. inhibit enzymes that break down neurotransmitters b. block the receptor sites for neurotransmitters c. increase the release of dopamine d. allow excess amounts of dopamine to accumulate in the synapses