The number of muscle fibers served by a single axon varies considerably. In muscles that move the fingers, the ratio is small, whereas in muscles that move the legs, the ratio is large
This difference in ratio depends upon the ______________ needed to move the muscle.
a. precision
b. strength
c. flexibility
d. speed
e. agility
Answer: a. precision
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Evidence for the validity of the Fifth Edition of the Binet scale does NOT include ____ validity
a. predictive b. criterion c. content d. construct
The sexually reproductive glands in males produce more _____ than they do _____.
A) estrogen; testosterone B) testosterone; estrogen C) oxytocin; testosterone D) oxytocin; estrogen
The other race effect refers to the idea that
A. eyewitnesses are usually better at recognizing and identifying members of their own race or ethnic group than members of another race or ethnic group. B. those selecting a jury should strive to have jurors who are the same race or ethnicity as the defendant. C. those creating a line-up should make sure that all the distractors (i.e., non-suspects) are not of another race from the stated race of the suspect. D. eyewitnesses are usually worse at recognizing and identifying members of their own race or ethnic group than members of another race or ethnic group.
Major depressive disorder is characterized by either depressed mood or __________ in activities and accompanied by ________ other symptoms that last for more than 2 weeks.
A .increased interest; 4 B. loss of interest; 4 C. excessive participation; 6 D. lack of interest; 2