Homework Answers
the primary disadvantage of repeated measures design is that when subjects are used repeatedly, there is always the risk of order effect coming into play where an individual's order effects the performance along with results effected due to boredom or lack of concentration due to same or results could also be affected due to practice.
the primary advantage of repeated measure design is that it allows you to asses and separate individual differences from random error, and everything goes to error term.
counterbalancing is an arrangement of treatment conditions designed to balance or reduce order effect such as if there are two groups and they have to be exposed to two conditions A and B ,hence one group shall be exposed to A and then B whereas other will get B before A, hence reducing the effect of order,practice and boredom.
the repeated measure design is exposing same group to different experimental conditions, it reduces the risk of individual differences and require fewer subjects, it usually has longitudinal studies involved that is, studying same set of subjects over different periods of time.
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6. Advantages and disadvantages of repeated-measures designs Aa Aa E The primary disadvantage of repeated-measures design...
10. Advantages and disadvantages of the related-samples design Aa Aa E Disadvantages of using a related...
10. Advantages and disadvantages of the related-samples design Aa Aa E Disadvantages of using a related sample (either one sample of participants with repeated measures or two matched samples) versus using two independent samples include which of the following? Check all that apply. O A study that uses related samples to compare two drugs (specifically, one sample of participants with repeated measures) can have a carryover and/or order effect such that the effects of the drug taken before the first...
3. Repeated-measures and matched-subjects experiments Aa Aa Repeated-measures experiments measure the same set of research participants...
3. Repeated-measures and matched-subjects experiments Aa Aa Repeated-measures experiments measure the same set of research participants two or more times, while matched-subjects experiments study participants who are matched on one or more characteristics. Which of the following are true for both a repeated-measures experiment and a matched-subjects experiment when used to compare two treatment conditions? Check all that apply. The researcher computes difference scores to compute a t statistic. □ If the researcher has n number of participants to use...
contrasting a repeated measures research design with matched subjects and independent measures designs A graduate student...
contrasting a repeated measures research design with matched
subjects and independent measures designs
A graduate student is interested in whether journaling can affect grief and healing. She has participants who have been widowed within the past 10-14 months complete a battery of psychological questionnaires before and after journaling about their daily problems for 2 months. The first time the graduate student conducted this study, she used a repeated-measures design and compared the widows' and widowers' baseline scores with their scores...
5. A step-by-step hypothesis test for a repeated measures design Aa Aa E Consider the following...
5. A step-by-step hypothesis test for a repeated measures design Aa Aa E Consider the following data from a repeated-measures design. You want to use a repeated-measures t test to test the null hypothesis Ho: D 0 (the null hypothesis states that the mean difference for the general population is zero). The data consist of five observations, each with two measurements, A and B, taken before and after a treatment. Assume the population of the differences in these measurements are...
5. A step-by-step hypothesis test for a repeated-measures design Aa Aa E Consider the following data...
5. A step-by-step hypothesis test for a repeated-measures design Aa Aa E Consider the following data from a repeated-measures design. You want to use a repeated-measures t test to test the null hypothesis Ho: Wp = 0 (the null hypothesis states that the mean difference for the general population is zero). The data consist of five observations, each with two measurements, A and B, taken before and after a treatment. Assume the population of the differences in these measurements are...
7. An advantage of the matched groups research design is that it: provides a less ambiguous interpretation of the results than the repeated measures design. has more statistical power th...
7. An advantage of the matched groups research design is that it: provides a less ambiguous interpretation of the results than the repeated measures design. has more statistical power than the between-groups design with random assignment. requires fewer research subjects than the repeated measures design. has more statistical power than the repeated measures design. 8. One way to increase the statistical power within a between-groups design is to: have each participant contribute two data points per condition. match participants on...
6. Typically, when comparing a within-subjects design to a between-groups design which of the following describe...
6. Typically, when comparing a within-subjects design to a between-groups design which of the following describe their differences in error variance? a. Within-subjects designs results in less error variance than between-groups. b. A within-subjects design results in more error variance than a between-groups design. C. A within-subjects design results in the same amount of error variance as a between-groups design d. There is no error variance in a within-subjects design, whereas a between- groups design does present some error variance....
5. A two-tailed hypothesis test for a repeated-measures design A graduate student is interested in whether...
5. A two-tailed hypothesis test for a repeated-measures design A graduate student is interested in whether jounaling can affect grief and healing. For her study, she selects a random sample of 64 adults who have been widowed within the past 10 to 14 months. The subjects complete a battery of psychological questionnaires before and after spending two months journaling about their emotions. Before the two months of journaling, the mean score on the impact of event scale-avoidance subscale, which measures...
LLLLLS. 6. A one-tailed hypothesis test for a repeated-measures design Here to learn more. Aa Aa...
LLLLLS. 6. A one-tailed hypothesis test for a repeated-measures design Here to learn more. Aa Aa E A cognitive psychologist is interested in whether increasing reading speed improves comprehension. He has students complete a reading comprehension task before and after a six-week speed-reading course In the beginning of the study, a randomly selected group of 81 students scored an average of 102 points on the reading comprehension task. Since the sample size is larger than 30, the cognitive psychologist can...
Statistics Exam 2 (1) Compatibility Mode Layout References Mailings ReviewView HelpTell me what you want to...
Statistics Exam 2 (1) Compatibility Mode Layout References Mailings ReviewView HelpTell me what you want to do A-e. A.|ー 1,-. Isa-B. ||1Normal 1No Spac Heading 1 Heading 2 Title Paragraph Styles a matched-subjects design d. all of the above would require the same number of subjects 22. For an experiment comparing two treatment conditions, an independent-measures design would obtain score(s) for each subject and a repeated-measures design would obtainscore(s) for each subject a. 1, 1 b. 1,2 c. 2,1 d....
10. Advantages and disadvantages of the related-samples design Aa Aa E Disadvantages of using a related sample (either one sample of participants with repeated measures or two matched samples) versus using two independent samples include which of the following? Check all that apply. O A study that uses related samples to compare two drugs (specifically, one sample of participants with repeated measures) can have a carryover and/or order effect such that the effects of the drug taken before the first...
3. Repeated-measures and matched-subjects experiments Aa Aa Repeated-measures experiments measure the same set of research participants two or more times, while matched-subjects experiments study participants who are matched on one or more characteristics. Which of the following are true for both a repeated-measures experiment and a matched-subjects experiment when used to compare two treatment conditions? Check all that apply. The researcher computes difference scores to compute a t statistic. □ If the researcher has n number of participants to use...
contrasting a repeated measures research design with matched
subjects and independent measures designs
A graduate student is interested in whether journaling can affect grief and healing. She has participants who have been widowed within the past 10-14 months complete a battery of psychological questionnaires before and after journaling about their daily problems for 2 months. The first time the graduate student conducted this study, she used a repeated-measures design and compared the widows' and widowers' baseline scores with their scores...
5. A step-by-step hypothesis test for a repeated measures design Aa Aa E Consider the following data from a repeated-measures design. You want to use a repeated-measures t test to test the null hypothesis Ho: D 0 (the null hypothesis states that the mean difference for the general population is zero). The data consist of five observations, each with two measurements, A and B, taken before and after a treatment. Assume the population of the differences in these measurements are...
5. A step-by-step hypothesis test for a repeated-measures design Aa Aa E Consider the following data from a repeated-measures design. You want to use a repeated-measures t test to test the null hypothesis Ho: Wp = 0 (the null hypothesis states that the mean difference for the general population is zero). The data consist of five observations, each with two measurements, A and B, taken before and after a treatment. Assume the population of the differences in these measurements are...
6. Typically, when comparing a within-subjects design to a between-groups design which of the following describe their differences in error variance? a. Within-subjects designs results in less error variance than between-groups. b. A within-subjects design results in more error variance than a between-groups design. C. A within-subjects design results in the same amount of error variance as a between-groups design d. There is no error variance in a within-subjects design, whereas a between- groups design does present some error variance....
5. A two-tailed hypothesis test for a repeated-measures design A graduate student is interested in whether jounaling can affect grief and healing. For her study, she selects a random sample of 64 adults who have been widowed within the past 10 to 14 months. The subjects complete a battery of psychological questionnaires before and after spending two months journaling about their emotions. Before the two months of journaling, the mean score on the impact of event scale-avoidance subscale, which measures...
LLLLLS. 6. A one-tailed hypothesis test for a repeated-measures design Here to learn more. Aa Aa E A cognitive psychologist is interested in whether increasing reading speed improves comprehension. He has students complete a reading comprehension task before and after a six-week speed-reading course In the beginning of the study, a randomly selected group of 81 students scored an average of 102 points on the reading comprehension task. Since the sample size is larger than 30, the cognitive psychologist can...
Statistics Exam 2 (1) Compatibility Mode Layout References Mailings ReviewView HelpTell me what you want to do A-e. A.|ー 1,-. Isa-B. ||1Normal 1No Spac Heading 1 Heading 2 Title Paragraph Styles a matched-subjects design d. all of the above would require the same number of subjects 22. For an experiment comparing two treatment conditions, an independent-measures design would obtain score(s) for each subject and a repeated-measures design would obtainscore(s) for each subject a. 1, 1 b. 1,2 c. 2,1 d....
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