The operational definition of the absolute threshold is the stimulus level at which a sensory signal is
a. detected.
b. presented.
c. detected half the time.
d. detected all of the time.
Answer: c. detected half the time.
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Which of the following is the single best predictor of adolescent sexual behavior?
a. the adolescent's popularity among his/her peers b. the "crowd" with whom the adolescent most closely identifies c. the adolescent's racial or ethnic background d. there is no single factor that best predicts adolescent sexual behavior
A primary function of the prefrontal cortex is
a. releasing hormones to regulate the body b. keeping us awake and alert c. executive function d. processing visual information
Sanders and colleagues' study used the N100 response to the sound of a string of nonsense
syllables. The results indicated a. that a segment of a spoken string of letters could be recognized as a "word." b. bottom-up processing of the continuous speech was occurring. c. the importance of context in understanding speech. d. that the participants could organize the letters as syllables but not as words. e. that participants were unable to comprehend anything meaningful in the string.
Between 2 and 3 years old, how does children's symbolic play change?
A) They primarily engage in sensorimotor play. B) They can pretend an object is something else. C) They no longer use imitation. D) They stop playing make-believe games.