In addition to changes in movement capacities of the body, motivation and opportunities to practice, dynamic systems theorists propose that motor skills depend on
a. a secular trend in physical growth.
b. social factors, such as playing with friends
c. a change in the dominant brain hemisphere.
d. brain maturation.
Answer: d. brain maturation.
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Cytokines are
A) foreign bodies such as viruses and bacteria. B) in the bone marrow and produce antibodies. C) a type of leukocyte and are part of the immune system. D) chemical messengers that allow immune cells to communicate with each other.
Which of the following is the most widely used and widely taught scoring system for the Rorschach?
A. the Klopfer system B. Rorschach's own Psychodiagnostics system C. the Piotrowski system D. the Exner system
Which of the following policies is most likely to reduce adolescent smoking?
A. a sharp rise in the price of tobacco products B. additional information about the health risks of smoking C. an anti-smoking education campaign in school D. an anti-smoking ad campaign featuring celebrities
All of the following are tranquilizers EXCEPT
a. Valium. b. Methaqualone. c. Xanax. d. Halcion. e. benzodiazepines.