A Latin square design is used to determine the order of treatments that will be used in a within-subjects experiment comparing five treatments labeled A, B, C, D, and E. How many groups of participants will receive treatment E as the first treatment?
a. 0
b. 1
c. 5
d. cannot answer without more information
b
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Which of the following is one of the undesired outcomes of almost 50 percent of IVF pregnancies?
quintuplets or sextuplets Down syndrome premature birth low-birthweight twins or triplets
The place theory of hearing states that:
a. the place or location from which a sound is coming is identified based on the difference in intensity between the two ears. b. the location along the basilar membrane that is stimulated by sound determines how we perceive the sound's pitch. c. the same frequency sound will have a different sound depending on the location of the sound source relative to the head. d. the primary auditory cortex is located in the same place in all human brains.
The most common type of activity in the sexual assault of men by men is ____
a. oral penetration b. anal penetration c. masturbation to ejaculation d. forced vaginal intercourse while being observed by the male rapist
Before participating in an experiment, participants must sign a document affirming that they have been told the basic outlines of the study and are aware of what their participation will involve and what risks the experiment may hold. The document also gets participants to confirm that their participation is purely voluntary and that they may terminate it at any time. To which ethical principle of research does this refer?
A. introspection B. informed consent C. debriefing D. significant outcome