PSYC 2005 Exam 1 Mult. Choice Questions and Clicker Questions And Verified Accurate Answers Guaranteed Pass.

*CL* (9/5) Given the exceptionally high level of student that UVA accepts, what shape would you expect the final (uncurved) grade distribution of any UVA class of students would be? a.Negative b.Positive c.Normal - correct answer Negative *CQ* 9/10 Which measure of variability is the easiest to interpret? A. SD^2 B.SD - correct answer SD - We interpret as a unit measuring the distance a score is from the mean *CQ* 9/12 In a normal distribution, approximately what percentage of scores falls below two standard deviations above the mean? A.84% B.90% C.95% D.98% - correct answer 98% *CQ* 9/17 Which of the following is the term typically used for the standard deviation of a distribution of means? A.Means distribution B.Standard distribution C.Standard error D.Standard variance - correct answer Standard Error, -it is the standard deviation of your sampling distribution *CQ* 9/17 If a lot of samples are draw from a population and distributed in a wonkey shape, what will the distribution of means look like? A. Normal B. Same Wonkey Shape C. Right/Pos. Skew D.Left/Neg. Skew - correct answer Normal; - This is because of the central limit theorem, where the averages of samples have approximately normal distributions (but narrower) *CQ* 9/24 Which of the following is not true of confidence intervals? A.They are less likely than the significance testing approach to be misused B.They contain all the key info of significance tests C.They do not require calculation of standard errors - correct answer They do not require calculation of standard errors -So, ABC and D are all true of Confidence Intervals Q1 Which of the following are not data? A. The time it takes neural stimulation to move a frog's leg B. Reaction time for an individual to shift their attention C. A person's internal mental state D. A person's response to the question "In terms of gender, how do you identify?" - correct answer C. A person's mental state - Data have to be direct observations that are available to the senses Q2 No single study proves or disproves anything in science. __________ is the only way we can know a finding is true. - correct answer Replication Q3 Dr. Ames proposes an evolutionary psychology theory about helping behavior. She says that human beings have evolved over the last 200,000 years to help others because it increased the chances of the species' survival. Given what you've learned about characteristics of a "good" theory, very briefly describe the two most fundamental problems with Dr. Ames' theory - correct answer - It must be testable --> You can't gather research on humans from 200,000 years - Must be falsafiable, you can't say that it increased the chances of the species survival when there's no chance to prove that wrong Q4 To see if sodium intake influences weight, the dining hall agreed to withhold all salt from the food it served for one week. Careful records were taken to determine how many meals each student ate in the dining hall during the week. Students were divided into two categories - those with low salt diets (10 or more meals in the dining hall) and those with high salt diets. They were weighed in a surprise campus weigh-in to see if the two groups were different. Which type of research design is this? A. Differential B. Correlation C. Experiment - correct answer A. Differential Correlation must have naturally occurring variables Experimental must introduce a new variable Differential uses one of two variables to define the groups Q5 A researcher was interested in knowing whether students' cramming was a productive method of studying. She got students to agree to follow her study habit instructions by paying them. One-half of her class she told to study for two hours every day except the day before tests. The other group she told to study only on the day before the test. Each student had to turn in a report of when she had studied to get paid. The professor then compared the test scores of the two groups of the students. Which type of research design is this? A. experiment B. differential C. correlational - correct answer Experimental refer to flashcard 10; researcher altered a variable - study habit Q6 To see if political beliefs were related to whether people were party animals, a Research Methods class administered a test that measured how liberal a person's beliefs are. Then they had the participants carefully track and record the number of parties they attended over a three-month period and compared the data. Which type of research design is this? A. correlational B. differential C. experiment - correct answer Correlational - Comparing two naturally occurring variables Q7 A student wanted to determine if studying in different locations (e.g,. library, dorm room) impacts test scores. Which type of research design should she use? (More than one answer can be selected.) A. experiment B. differential C. correlational - correct answer A experiment Have to alter the variable study location Q8 That researchers must obtain informed consent is most closely associated with the concept of Patient ____________ , one of the three research ethos (values) identified in the Belmont Report. - correct answer autonomy Q9Ten gym members weighed more than 200 pounds; 20 members weighed less than 200 pounds. This represents a ________ scale of measurement. A. interval