Abby is interested in the relation between doing yoga and stress levels, so she conducts a study in which she gives her participants a survey asking if they do yoga regularly and a measure of perceived stress. This study is:
a. retrospective
b. prospective
c. cross-sectional
d. longitudinal
Answer: c. cross-sectional
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Which statement about the human immunodeficiency virus (HIV) is true?
A) About 30 percent of all new HIV infections affect women. B) In South Africa, 30 percent of all pregnant women are HIV-positive. C) About 30 percent of new HIV infections occur in developing countries. D) Untreated HIV-infected mothers pass the virus to the fetus 30 percent of the time.
The category of psychoactive medications called antipsychotics generally reduces the positive symptoms of schizophrenia and other psychotic disorders by decreasing the activity of which neurotransmitter?
a. GABA b. Serotonin c. Dopamine d. Acetylcholine
Find the fundamental period and fundamental frequency of each of these functions.
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Participants in a research project are falsely told that they caused harm to someone else. In this case, a researcher is obligated to make sure that the participants are told about the true nature of the study before they leave and must make sure that the participants do not feel badly about their behavior. These two obligations are referred to as
a. informed consent and debriefing. b. debriefing and protection from harm. c. protection from harm and confidentiality. d. confidentiality and informed consent.