Elia and Leslie are fraternal twins. Elia was recently diagnosed with schizophrenia. What are Leslie's chances of also being diagnosed?
A. 50 percent
B. 17 percent
C. 25 percent
D. 100 percent
Answer: D
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Dr. Masood is conducting an experiment in which she is testing the effect of video game playing on the ability to think creatively. One group of children plays video games two hours a day for a week, another group of similar children plays video games for a total of two hours in a week, and a third group of children do not play video games at all. All three groups of children then take a test
measuring their creativity. The hypothesis that Dr. Masood is testing is best described as a ____ hypothesis. a. ?predictive b. ?control c. ?causal d. ?behavioral
Joshua developed an assessment tool to determine a person's level of depression. However, upon repeated trials, he comes to find that the test is actually a better measure of self-esteem. Joshua's depression measure is not very ________
a. valid c. standardized b. reliable d. none of these
What percentage of mothers retain custody of their children after divorce?
a. 30% b. 50% c. 70% d. 90%
People often explain human needs in terms of food, clothing, and shelter. Why is exercise not included as a need?
A. Historically, humans had a great amount of physical work which was carried out for survival purposes. Today we make time to exercise. B. A nutritious diet is much more important than exercise with regard to maintaining health. C. Humans have more of a need to rest than they do to exercise to maintain health. D. Humans have to be attracted to exercising and therefore it is not a human need, but a desire.