Effect size is an important tool for making sense of research results because it
A) indicates the degree to which a result is statistically significant.
B) indicates the size of the statistical effect.
C) limits variance and therefore increases power.
D) is always smaller than the variance.
B
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The item characteristic curve can provide a picture of an item’s
a. distribution of responses. b. inter-item and item-total correlation. c. level of difficulty and discrimination. d. reliability and validity.
Only approximately ______ of homosexual men are feminine in their behaviors.
A. 17% B. 25% C. 44% D. 55%
Which of the following is the true statement about gaseous neurochemicals?
A. They are contained in synaptic vesicles. B. They may transfer information from a postsynaptic neuron to a presynaptic neuron. C. They interact with receptors embedded in neural membranes. D. They are deactivated by enzymes in the synaptic gap.
What is likely limiting the widespread use of eye movement desensitization and reprocessing (EMDR) therapy?
A. The research proving its effectiveness has not been extensive enough. B. It is a controversial treatment that many psychoanalysts have ethical problems with. C. It has only proven to be effective in treating a very narrow range of conditions. D. The technology is too expensive.