When considering an association between scale variables, typically we treat one variable as the ______ variable and the other as the ______ variable.
a. outcome; dependent
b. predictor; outcome
c. dependent; outcome
d. independent; predictor
Ans: B
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Studies have shown that prepared childbirth classes __________.
A. do not produce healthier mothers and babies than standard medical practice B. lengthen labor C. produce healthier mothers and babies than standard medical practice D. increase the use of pain medications during labor
Suppose that a close friend is telling you about a very emotional experience she has just had. You are paying such close attention to her that you fail to notice that some strangers have just entered the room. This incident is an example of
a. change blindness. b. illusory contour. c. inattentional blindness. d. a gestalt.
For a single-sample t test with 18 participants, the degrees of freedom are a. 17
b. 18. c. 16. d. unable to be determined.
Which of the following describes what happens if you trace an auditory stimulus from the time it first reaches the ear until it arrives at the brain?
a) The outer ear (pinna) gathers sound waves and funnels them down the auditory canal striking the eardrum. b) The basilar membrane causes the hammer, anvil, and stirrup to vibrate striking the oval window. c) The auditory cones respond to the various tonal frequencies, which lead the auditory nerve to send a message to the brain. d) The auditory nerve joins with the nasal nerve to produce an input to the olfactory lobe.