"Pete is older than Jill, and Jill is older than Pat. Who is older, Pete or Pat?" The ability to solve problems such as this demonstrates competence in

One way in which exercise is believed to improve cognitive functioning is by increasing levels of ____________ in the brain

A) cortisol B) brain-derived neurotrophic factor (BDNF) C) glucocorticoids D) flavonoids

Suppose you are taking part in a study of circadian rhythms. You have been asked to live in a special room in which there are no windows, clocks, or watches, and no access to time cues of any sort. How will these conditions affect your biological clock?

a. Your biological clock will be totally disrupted, showing little consistency from day to day. b. Your biological clock will be completely unaffected and you will establish a precise 24-hour cycle. c. It is likely that your biological clock will be just a few minutes longer than 24 hours. d. Females will show little change in their biological clocks, whereas males will show about a 23-hour rhythm.