The ring of muscle tissue that controls the pupil's size is called the:

Which of the following is true about psychologists' roles in the general community?

a. Psychologists are prohibited by law from working for, or with, government agencies. b. Clinical psychologists frequently contribute to their communities, but there are few opportunities for research psychologists to do the same. c. Research psychologists frequently contribute to their communities, but there are few opportunities for clinical psychologists to do the same. d. All types of psychologists can contribute to their communities by helping to solve problems and answer important questions.

Brendan just got married and is not used to wearing a

wedding band on his left hand. Joel, his best man and a psychology student, correctly reassures him with which of the following statements? a) "Don't worry, because of transduction, you'll soon get used to the ring on your finger." b) "Because of assimilation, within a few hours you won't even know it is there." c) "That is something you are just going to have to get used to—you will always be aware of the weight of the ring on your finger." d) "The good news is that sensory adaptation will soon kick in, and you won't even notice the ring on your finger."