Which is a symptom SPECIFICALLY of late-stage dementia?
a) being unable to speak
b) acting erratically
c) forgetting names
d) wandering
Answer: a) being unable to speak
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Suppose that a researcher wants to see which gender is most helpful, men or women. The researcher parks a car with a flat tire on a road and tallies the number of men and women who stop to help. What would be an example of one confounding variable in this study?
a. The men are more likely than women to be familiar with fixing a flat tire. b. The gender of the participants cannot be accurately determined. c. The operational definition of helping has not been specified with precision. d. The results probably depend upon the amount of traffic that passes by.
Tennis players who have a high percentage of successful first serves have a greater chance of winning tennis matches than players who are not as successful on their first serve. This is an example of a ____ correlation.
A. positive B. negative C. perfect D. zero
Ecological systems theory views the person as
A) a blossoming flower, and it regards development as a maturational process. B) developing within a complex system of relationships affected by multiple levels of the surrounding environment. C) a social being influenced primarily by observational learning or adult modeling. D) a computer-like system that actively codes, transforms, and organizes information.
The authors of your text report that researchers exposed some participants in a study to the virus that causes the common cold and others to saline solution
Results of this study showed that ________ of participants reporting the least stress caught the cold, and ________ of participants reporting the most stress caught the cold. a. 10 percent; 100 percent b. 0 percent; 50 percent c. 27 percent; 50 percent d. 12 percent; 89 percent