Extra Credit (1 point, no penalty for incorrect answer). A researcher reports a significant relationship between hours spent doing homework and academic achievement (i.e., the more time spent doing homework, the higher their GPA). A colleague questions the internal validity of this claim. The colleague is curious as to whether the relationship between homework and academic achievement could be explained by interest in one’s classes. Specifically, the colleague thinks that students who are interested in their classes will both do more homework and have higher GPAs. Which of the following is a solution to this possible threat to internal validity?

A sample is always ________ a population.

RESEARCH STUDY: Dr. Finkel is a social psychologist who studies romantic relationships. Several researchers have found that there is a link between income and marital satisfaction (e.g., Dakin & Wampler, 2012). Dr. Finkel is curious as to whether there is a causal link between the two variables, such that having a higher income causes higher levels of marital satisfaction. He is confident that he cannot reasonably or ethically manipulate people’s income level, so he decides to use a multivariate design. He is also curious as to whether there is a causal link between these two variables or if two other variables (number of arguments and life satisfaction) can explain the relationship. He measures these variables in a sample of 124 married couples recruited from a local community center. Below are his results: PLEASE NUMBER YOUR RESPONSES 1-5 BELOW. Which of these variables serve as the criterion variable in Dr. Finkel’s study? According to the results in the table, what is the strongest predictor of the criterion? Describe the results of the strongest predictor in a complete sentence. Be as specific as possible. How are standardized betas different from bivariate correlation (r)? A friend looks at the data from this study and says, “The only reason the income is associated with marital satisfaction is life satisfaction —people more satisfied with life probably make more money, and people more satisfied with life are probably also more satisfied with their marriages. What do you say back to your friend?  

The Dietary Guidelines for Americans recommendations for CHD prevention includes consumption of fish at least twice per week.

 Which of the following is a possible consequence of uncontrolled hypertension?

Refer to the following ABG result: PH  7.20 PaC02  60 Pa02  60 HC03  24

CASE REPORT: A 70-year-old man is admitted to the hospital with congestive heart failure. He gives a history of angina pectoris of several years’ duration, with recent exacerbation of symptoms, such as onset of left-sided chest pain after exercise and, occasionally,dyspnea.The pain is usually relieved by ceasing the strenuous activity and placing nitroglycerin tablets sublingually. Hypertension may increase during the attack, and arrhythmias may occur. According to this report, the patient has a history of:

  A slipping forward or down of one of the parts or organs of the body:

Which of the following is MOST accurate when adjusting a work station?

For a patient with Diastasis recti, which amount of separation is considered pathological?