A researcher measures attention as the duration of time in seconds that a participant orients their eyes toward an object. Which of the following is true about this measure?
A. Attention is a quantitative, discrete variable on a ratio scale of measurement.
B. Attention is a quantitative, continuous variable on an interval scale of measurement.
C. Attention is a quantitative, continuous variable on a ratio scale of measurement.
D. Attention is a qualitative, discrete variable on a nominal scale of measurement.
Answer: C
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In order to determine the effectiveness of his new teaching method, Mr. Lewis gave his students a test to measure their knowledge before he implemented his new method. He also tested them after he implemented his new teaching method. Mr. Lewis is using a a. single-group posttest-only design
b. nonequivalent control group posttest-only design. c. single-group pretest/posttest design. d. nonequivalent control group pretest/posttest design.
The process of learning to respond only to a single specific object or event is called _________
a. extinction b. inhibition c. stimulus generalization d. discrimination
Which of the following statements about synaptic events is TRUE:
A. presynaptic terminals usually do not contain mitochondria B. calcium influx is not essential for synaptic transmission c. transmitters in the synaptic gap can be inactivated by diffusion D. sodium influx is essential for transmitter release E. a major excitatory transmitter is GABA
Which of the following statements is true of women who experience major depression with perinatal onset?
A. They profit from social support and counseling. B. They have a high libido. C. They want to abort their pregnancy. D. They suffer from bipolar disorder.