Researchers usually make theory-based __________ or predictions about what findings they

Which statement is LEAST likely to be made by a theorist who subscribes to the Five-Factor Model?

a) Each personality trait is allocated a different region in the brain. b) Personality characteristics are the product of internal mechanisms. c) Personality differences have a genetic basis. d) Personality traits are stable over time.

Researchers who have looked at changes with age in total amounts of daily REM sleep and NREM sleep have found that

a. the amount of REM sleep increases considerably over the years. b. NREM diminishes more sharply than REM sleep over the years. c. the amount of REM sleep decreases considerably over the years. d. REM sleep remains fairly constant over the years, but NREM increases slightly.