present information about research findings on cohabitation in the united states. what are the findings of researchers / practitioners. List the Pros and Cons of Cohabitation in adults.
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A newspaper article was headlined, "Marrying Young Can Be Beneficial." The article said that marriage is a good thing when it comes to cutting back on drinking and drugs. A University of Michigan Institute for Social Research study of 33,000 young adults showed that young, unmarried adults usually increased their alcohol, marijuana, and cocaine use when they left home, often to attend college. Those same people, however, decreased their drug and alcohol use when they got engaged or married. Couples who lived together but were not engaged or married showed no such drop in drug use. 5. The strongest reason for having reservations about the claim made in the first sentence of the quote is that A) it's an observational study. B) the sample size is too small. C) the study was limited to Michigan. D) there is no control group. E) you don't agree with the claim. The administration of Virginia Commonwealth University has been asked to extend the Drop/Add Period to two weeks (instead of the current one week period). VCU will do so if it is convinced that more than half of the student body is in favor of this change. Of the 1500 students surveyed, 803 are in favor of extending the Drop/Add Period as proposed. 6. The study is a(n) A) experiment. B) observational study. C) sample survey. D) census. E) population.
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Researcher Penny GordonLarson and her associate wanted to determine whether young couples who marry or cohabit ate are more likely to gain weight than those who stay single. The researchers followed 8000 men and women for 7 years as they matured from teens to young adults. When the study began, none of the participants were married or living with a romantic partner. By the end of the study, $14 \%$ of the participants were married and $16 \%$ were living with a romantic partner. The researchers found that married or cohabiting women gained, on average, 9 pounds more than single women, and married or cohabiting men gained, on average, 6 pounds more than single men. (a) Why is this an observational study? What type of Why observational study is this? (b) What is the response variable in the study? What is the explanatory variable? (c) Identify some potential lurking variables in this study. (d) Can we conclude that getting married or cohabiting causes one to gain weight? Explain.
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Observational Studies versus Designed Experiments
A social psychologist is interest in whether there is a relationship between cohabitation before marriage and divorce. A random sample of 150 couples that were married in the past 10 years in a Midwestern city were asked if they lived together before getting married and if their marriage was still intact. The following results were obtained. Using α = 0.05, what do you conclude? Divorced Still Married Cohabitated before marriage 58 42 Did not cohabit before marriage 18 32
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