The lens obtains its nutrients from
a. its own blood supply
b. the aqueous humor.
c. the vitreous humor.
d. the blood supply of the iris.
b
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We should expect social loafing to be greatly reduced when ____
a. people are held accountable for their inputs b. people are anonymous within the group c. the task at hand is unimportant to people d. people think that others in the group are superior to them in terms of the task at hand
Whenever Amy sees a dog, she experiences unpleasant bodily responses (rapid heart beat, upset stomach, and sweaty hands) and engages in escape behavior (runs away). In behavior modification, Amy's operant and respondent behavior is referred to as:
a. fear b. reactivity c. alarm d. behavioral excess
Jordie went to have his hearing tested. Some of the sounds that were presented during the test were so faint that he was unable to detect them. These faint sounds would fall below Jordie's:
a. difference threshold for sound b. adaptation threshold for sound c. absolute threshold for sound d. level for perceptual invariance
In posttraumatic stress disorder (PTSD), people often feel hypervigilant, or unable to relax even when they're in a very safe situation. Which of the following neurotransmitters might be involved in this unusual state?
a. acetylcholine b. serotonin c. dopamine d. norepinephrine