1) When graphing the distribution of a study, the researcher notices that the disproportionate number of subjects scored low on their tests, shifting the peak of the bell curve she was expecting. This is called a: a) positive skew b) negative skew  c) normal curve d) positive correlation  e) negative correlation 2) In a normal distribution of scores, approximately what percentage of all scores will occur within one standard deviation from the mean? a) 34 b) 68 c) 95 d) 97.5 e) 100 3) A study that analyzes the effects of heart disease in different regions of the country and socioeconomic statuses is called a: a) longitudinal study b) experimental design c) double-blind study d) cross-sectional design e) case study 4) A psychologist wishes to examine the relationship between age and career satisfaction among Americans. Which of the following research methods would be the best choice?  a) A case study b) Naturalistic observation c) A controlled laboratory experiment d) A quasi-experiment e) A cross-sectional study 5) A double-blind design is preferable for an experimental drug trial because it will likely eliminate which of the following? a) The placebo effect b) Demand characteristics c) Random error d) The need for informed consent e) Serious side effects of the drugs ingested 6) What type of research method relies on self reporting attitudes or behaviors of a particular group of people? a) Random Sampling b) Wording effects c) Case studies d) Survey e) Naturalistic observation 7) A researcher seeks to study the effects of a weight-loss supplement and decides to place an advertisement on buses and subways in New York City to attract subjects. All could happen with this type of subject selection EXCEPT: a) pre-screening bias b) self-selection bias c) selection bias d) healthy user bias e) courtesy bias 8) The best way to assure that there is no bias in a study is to have a a) Control group b) Random assignment c) Confounding variable d) Double-blind procedure 9) Which of the following groups of quiz scores has the higher standard deviation? a) 80, 80, 80, 82, 85 b) 90, 91, 93, 95, 98 c) 50, 53, 54, 54 d) 60, 65, 75, 84, 98 e) 70, 70, 79 10) Which of the following are most directly designed to help determine whether the findings of a study reflect a truly replicable phenomenon rather than the outcomes of chance processes? a) Inferential statistics b) Descriptive statistics c) Standard deviation d) Extraneous variables e) Correlation coefficients

Unit 2 Research Methods

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