Your eyes are now moving across the page to read this question. However, they pause briefly to acquire information from this sentence. This pause is called
a. a perceptual span.
b. a regression movement.
c. a fixation.
d. focused attention.
Ans: c
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A researcher uses a repeated-measures study to compare two treatment conditions with a set of 20 scores in each treatment. What is the value of df for the repeated-measures t statistic?
a. 18 c. 38 b. 19 d. 39
The resting potential of a neuron is maintained because:
a. the positively charged potassium ions are too small to pass through the cell's membrane b. the negatively charged sodium ions are too small to pass through the cell's membrane c. the negatively charged protein molecules are too large to pass through the cell's membrane d. the positively charged chloride ions are too large to pass through the cell's membrane
When we must make a choice among various alternatives, which of the following often determines intuitively what seems to be the right answer?
a. knowledge of the base rate b. divergent thinking c. deductive reasoning d. emotional reactions
The statistical decision process involves:
a. a test of whether the independent variable caused differences between groups. b. a test of whether confound variables caused differences between groups. c. a test of the research hypothesis. d. a test of the null hypothesis.