Discontinuity theorists believe that development involves primarily quantitative changes in human behavior.

Your roommate seems to have a bit of a problem with time management and ends up studying all night for an exam or writing a paper. Is this unusual behavior for a college student?

a. Yes, only 20% of college students ever pull an all-nighter. b. Yes, only 40% of college students ever pull an all-nighter. c. No, 60% of college students pull an all-nighter at least once. d. No, 80% of college students pull all-nighters.

Brain imaging studies (Gao et al., 2010; Jones et al., 2009; Marsh et al., 2008 ) on the biological bases of cognitive and affective deficits found in antisocial youths show that these youths experience:

a) Autonomic arousal to the distress of others b) Amygdala hyporeactivity to the distress of others c) An increase in amygdala-ventromedial prefrontal cortex connectivity d) All of the above