The release of ghrelin ____.?
a. ?increases hunger
b. ?decreases hunger
c. ?has no effect on hunger
d. ?occurs only in the presence of disease
ANSWER:
a
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Marcia has two boyfriends, Davie and Mickey, both of whom she likes very much. She has decided that dating both of them is making her life too complicated and, after careful deliberation, has decided to stop seeing Davie and continue dating only Mickey. According to cognitive dissonance theory, which of the following should happen next?
a. Marcia will develop an intense dislike for Mickey. b. Davie will seem more attractive than ever, making Marcia regret her decision. c. Mickey will seem more attractive than ever, convincing Marcia that she made the right choice. d. Marcia, Davie, and Mickey will appear on a reality show.
Someone with a highly reactive behavioural _____ system that enables approach behaviour toward rewards might be expected to show enhancements in the neurotransmitter _____.
A) activation; GABA B) activation; dopamine C) inhibition; GABA D) inhibition; dopamine
What type of symptoms occur first in Parkinson's disease?
A. cognitive symptoms B. changes in vision and hearing C. motor symptoms D. changes social-emotional skills
Which neurotransmitter plays a role in motor movement and is also involved in brain pathways for reward and punishment?
a) acetylcholine b) dopamine c) serotonin d) norepinephrine