According to the textbook, the main contributor to the increased rate of automobile accidents among teenagers is
A. texting while driving.
B. driving under the influence.
C. driving with other teenagers in the car.
D. talking on the phone, especially having an emotional conversation.
Answer: C
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In the standard normal distribution, a. most of the scores cluster on the ends of the distribution
b. more scores fall above the mean than below the mean. c. more scores fall below the mean than above the mean. d. approximately 95% of all scores fall between plus and minus two standard deviations from the mean.
The amino acid, glycine, provides a possible co-treatment for schizophrenia because it ____.
A. can be chemically converted into dopamine B. increases the effectiveness of glutamate C. decreases the effectiveness of glutamate D. increases the growth and division of glia cells
To efficiently train a rat to press a lever, you should reward
a. every response, even if the rat is not pressing the lever. b. every response, even if the rat is moving away from the lever. c. the first response that the rat makes in the direction of the lever. d. all responses, even if the rat is grooming itself.
Which of the following is true?
a. Only humans are capable of smelling pheromones. b. Nearly all animals except humans are capable of smelling pheromones. c. Many animals, including humans, are capable of smelling pheromones. d. All animals are capable of smelling pheromones.