Assignment
Question 1. A researcher wants to study the developmental changes in social and political attitudes that occur during the time a person is in college. The researcher is interested in both overall trends and in the changes that individual students undergo. Which survey research design will this researcher need to use?
A. observational design
B. cross-sectional design
C. successive independent samples design
D. longitudinal design
Question 2. In a study that investigates the effects of two different doses of a drug on memory performance, memory performance represents the ____ variable and doses of the drug represent the ____ variable.
A. correlational; confounding
B. experimental; control
C. dependent; independent
D. independent; dependent
Question 3. The validity of a questionnaire concerns
A. if it measures what it was designed to measure.
B. how consistently it measures.
C. removing any confounds.
D. whether or not it causes response bias.
Question 4. The problem of _____ in a repeated measures design occurs when the effects of a condition persist or carryover to affect performance in the subsequent conditions.
A. sensitivity
B. anticipation effects
C. differential transfer
D. counterbalancing
Question 5. Researchers have studied changes in the values and goals of college freshman from 1966 to the present by drawing random samples from each year's incoming class. Which survey research design describes this research?
A. stratified random sampling design
B. cross-sectional design
C. successive independent samples design
D. longitudinal design
Question 6. A health psychologist conducts an experiment to test the effectiveness of three techniques for helping a person to relax. The psychologist has a limited number of people available to participate in the experiment, and each relaxation technique takes a long time to complete. The psychologist has decided, therefore, to use the incomplete repeated-measures design with all possible orders to balance practice effects. What is the minimum number of participants the psychologist will need for this experiment?
A. 4
B. 6
C. 8
D. 24
Question 7. To determine which candidate for governor residents will vote for, a survey study was conducted by phone by a polling company. Ten percent of the state's population makes over $200,000; 20% makes between $100,000 and $200,000; 50% makes between $50,000 and $100,000; and 20% makes below $50,000. Which sampling strategy makes sure all segments of the population are adequately surveyed?
A. random
B. non-probability
C. prorated random
D. stratified random
Question 8. Each of the three techniques that are used to balance practice effects in the incomplete repeated measures design conforms to a general rule that can be stated as
A. each condition must appear in only one ordinal position.
B. each condition must appear in the first ordinal position equally often.
C. each condition must appear in each ordinal position at least twice.
D. each condition must appear in each ordinal position equally often.
Question 9. Match the definitions below with the proper terms.
__ Sampling frame __Population __ Sample __ Element
a) each member of a population
b) list of the members of a population
c) set of all cases of interest
d) subset of population drawn from a sampling frame
Question 10. Which of the following samples would be representative of a population that is 75% women and 25%
men?
A. 60 women, 20 men
B. 155 women, 25 men
C. 225 women, 75 men
D. all of these
E. none of these
11. Survey researchers are most interested in
A. the responses of individuals in their sample.
B. obtaining a very large sample size.
C. generalizing responses from a sample to the population.
D. predicting the size of the sampling frame based on the sample.
Question 12. A researcher chose to administer a survey using the internet. This sample likely overrepresents people who own a computer and underrepresents people who don't own a computer. This problem in the researcher's survey is best described as
A. response bias.
B. a stratified sample.
C. selection bias.
D. a spurious relationship.
Question 13. Which of the following is NOT one of the reasons researchers choose to use the repeated measures design?
A. Repeated measures designs are generally less sensitive than are independent groups designs.
B. Repeated measures designs are more convenient and efficient.
C. Repeated measures designs require fewer subjects.
D. Repeated measures designs are needed when the experimental procedures require participants to compare two or more stimuli.
Question 14. In a survey of 500 randomly selected respondents, 360 respondents (72%) said they want the United Nations (U.N.) headquarters to remain in the United States. A TV news show conducted a call-in survey and asked the same question. Of the 186,000 who phoned in their response, 124,620 people (67%) said they want the U.N. out of the United States. The most reasonable statement about these different findings is that
A. the call-in survey results should be believed because of the larger number of people who responded they want the U.N. out of the United States.
B. the large sample size for the call-in survey indicates it is a more representative sample.
C. the findings for the randomly selected sample more likely represent the views of the population.
D. call-in surveys lead to more reliable findings.
Question 15. In a nationwide study conducted in 2017, samples of students were asked their opinions about the quality of their college education. The results of the survey were analyzed for differences among students at the various colleges and universities. What survey design was used in this study?
A. correlated samples design
B. cross-sectional design
C. successive independent samples design
D. longitudinal design
Question 16. A student is considering doing a complete repeated measures design experiment involving motor skills. The
student's advisor has told him that people show a large initial improvement on the task followed by slow steady improvement after this initial change. The student must choose a technique for balancing practice effects. Which technique should the student NOT use?
A. ABBA counterbalancing
B. block randomization
C. Latin Square
D. all possible orders
Question 17. A researcher designs an experiment with six conditions, but each condition takes only a very short amount
of time to administer. The researcher has the opportunity, therefore, to administer many trials of each condition in the experiment. Which of the following techniques is likely to be most effective for balancing practice effects?
A. ABBA counterbalancing
B. block randomization
C. stratified randomization
D. all possible orders of conditions
Question 18. A researcher plans to conduct a complete repeated-measures design in which the independent variable is
manipulated using four conditions that vary the level of violence depicted in a photograph (none, low, medium, high). There are 10 photographs in each of the four conditions. Each participant will rate each photo once. If the researcher wishes to have 80 ratings for each photo, how many participants should the researcher recruit?
A. 2
B. 10
C. 40
D. 80
Question 19. Balancing the order of conditions in a repeated measures design
A. equates practice effects with those found in random groups designs.
B. eliminates practice effects in the conditions of the experiment.
C. averages practice effects across the conditions of the experiment.
D. balances individual differences variables across the conditions of the experiment.
Question 20. A marketing researcher wants to test the effectiveness of three different types of advertisement. Each participant will respond to 50 examples of each type of advertisement so that the researcher can determine each person's preference. What type of design is this researcher using?
A. conditional repeated measures design
B. partial repeated measures design
C. complete repeated measures design
D. incomplete repeated measures design
Question 21. A researcher compares students' performance using a new learning strategy to their performance using the old strategy. Students' performance is first tested with the old strategy, followed by the new strategy. The results indicate that students perform better with the new strategy. These results
A. show that the order of the two learning strategies does not matter.
B. are uninterpretable due to the confounding with practice effects.
C. indicate that teachers should use the new strategy.
D. all of these
Question 22. Distinguish between probability sampling and nonprobability sampling (explain the difference).
Name two types of probability sampling and one type of nonprobability sampling.
A researcher was interested in developing a reliable and valid measure of friendliness. That is, she wanted to distinguish between friendly and unfriendly people using her questionnaire. To determine whether she developed a good measure (called "Friend"), she administered her "Friend" questionnaire to a group of 300 people twice (Friend-Time 1 and Friend-Time 2), separated by six months. At the second testing session, she also administered a similar questionnaire called "Nice," which previous research has shown to be a valid measure of people's ability to get along with people and to make friends. She also administered a questionnaire designed to measure art ability, which she predicted to be unrelated to friendliness. She observed the following correlation coefficients among the measures:
Friend-Time1/Friend Time2 correlation: .90
Friend Time1/Nice correlation: .80
Friend Time2/Nice correlation: .85
Friend Time1/Art Ability correlation: .10
Friend Time2/Art Ability correlation: .15
Which correlation coefficient is an indicator of whether the "Friend" measure is reliable?
Which correlation(s) test(s) convergent validity?
Which correlation(s) test(s) discriminant validity?
Do these correlations suggest her questionnaire is reliable and valid? Why or why not?
Question 23. A researcher wishes to use stratified random sampling to select a representative sample of 100
people from a population that has the following characteristics:
60% women; 40% men;
of these women, of these men,
50% are married 25% are married
and 50% are single. and 75% are single.
Describe the sample in terms of how many single and married women and men the researcher would need to represent the population.
Suppose the researcher mails the survey to the 100 people in the representative sample and only 50 of the people return a completed survey. Can you state that this sample of 50 represents the population? Why or why not?
Question 24. A psychologist wishes to have participants rate two different sets of inkblots (labeled A and B)
for their "emotionality." The inkblots differ in their use of color. Ten inkblots in set A are created in shades of gray; ten inkblots in set B use shades of red, blue, and yellow. The psychologist hypothesizes that color will influence participants' ratings of emotionality. Each participant will rate all twenty inkblots.
What is the independent variable in this experiment?
What is the dependent variable in this experiment?
What potential confounding variable must be balanced in this research?
Explain what balancing procedure would be best for this experiment.
Question 25. Explain one concept from Chapter 5 or 7 that you know that I did not ask a question about on
this test.
Format your assignment according to the following formatting requirements:
1. The answer should be typed, double spaced, using Times New Roman font (size 12), with one-inch margins on all sides.
2. The response also includes a cover page containing the title of the assignment, the student's name, the course title, and the date. The cover page is not included in the required page length.
3. Also include a reference page. The Citations and references should follow APA format. The reference page is not included in the required page length.
Attachment:- Chapter-5-and-7.rar