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The independent groups design with assignment by baseline stores to the control and treatment groups
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Uming he uses the same total number of study participants regardless of which design he uses, whi...
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...
1. The pretest-posttest nonequivalent control group design is also very commonly used in psychology. Which of the following is NOT a benefit of using this design when random assignment is not possible...
1. The pretest-posttest nonequivalent control group design is also very commonly used in psychology. Which of the following is NOT a benefit of using this design when random assignment is not possible: It reduces the threat of assignment bias It limits threats from time-related factors It provides some evidence of a potential cause-effect relationship It rules out differential history effects 2. Particularly when they do not include a control group, pre-post designs are most vulnerable to ____________-related threats to internal...
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....
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...
1. The pretest-posttest nonequivalent control group design is also very commonly used in psychology. Which of...
1. The pretest-posttest nonequivalent control group design is also very commonly used in psychology. Which of the following is NOT a benefit of using this design when random assignment is not possible: It reduces the threat of assignment bias It limits threats from time-related factors It provides some evidence of a potential cause-effect relationship It rules out differential history effects 2. Particularly when they do not include a control group, pre-post designs are most vulnerable to ____________-related threats to internal...
. Comparing and contrasting single-sample and two-condition designs Which of the following experi...
. Comparing and contrasting single-sample and two-condition designs Which of the following experiments describes a two-condition experiment? O You want to test whether a sample of chimpanzees raised in captivity and fed a strict vegan diet for their lifetimes live longer than the known average life span for all chimpanzees living in captivity You want to compare the mean Hamilton depression scores of a random sample of teenage girls who attend a weeklong self-image camp to the known mean Hamilton...
1. Ifa study includes random assignment but not a control group, the design may still be...
1. Ifa study includes random assignment but not a control group, the design may still be considered to be a true experimental design. True a. b. False Using control groups help account for which of the following threats to internal validity except? 2. History a. b. Testing Maturation c. None of the above d. If the results of a study determine that an intervention did not work, though for reasons not related to the intervention, the 3. study would have...
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...
please provide a summary with intext citaion for this article: T HE HEART AND ESTROGEN/ progestin...
please provide a summary with intext citaion for this article: T HE HEART AND ESTROGEN/ progestin Replacement Study (HERS) was a randomized, blinded, placebo-controlled trial of the effect of 0.625 mg of conjugated estrogens plus 2.5 mg of medroxyprogesterone acetate daily on coronary heart disease (CHD) event risk among 2763 postmenopausal women with documented CHD.1 Overall, during 4.1 years of follow-up, there were no significant differences between the hormone and placebo groups in the primary outcome of CHD events (nonfatal...
(1) State the type of research design used in the Schultz et al. report. (2) State...
(1) State the type of research design used in the Schultz et al. report. (2) State the elements or characteristics of this type of design used in the Schultz report (see textbook for designs). (3) Does the research design fit with the research purpose? Provide rationale as to why or why not. (4) What is the dependent variable and independent variable? (5) Is there a conceptual model/framework described in the report? If yes, describe briefly in a few sentences the...
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...
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....
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...
. Comparing and contrasting single-sample and two-condition designs Which of the following experiments describes a two-condition experiment? O You want to test whether a sample of chimpanzees raised in captivity and fed a strict vegan diet for their lifetimes live longer than the known average life span for all chimpanzees living in captivity You want to compare the mean Hamilton depression scores of a random sample of teenage girls who attend a weeklong self-image camp to the known mean Hamilton...
1. Ifa study includes random assignment but not a control group, the design may still be considered to be a true experimental design. True a. b. False Using control groups help account for which of the following threats to internal validity except? 2. History a. b. Testing Maturation c. None of the above d. If the results of a study determine that an intervention did not work, though for reasons not related to the intervention, the 3. study would have...
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...
(1) State the type of research design used in the Schultz et al. report. (2) State the elements or characteristics of this type of design used in the Schultz report (see textbook for designs). (3) Does the research design fit with the research purpose? Provide rationale as to why or why not. (4) What is the dependent variable and independent variable? (5) Is there a conceptual model/framework described in the report? If yes, describe briefly in a few sentences the...
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Question 05
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What is the output of the below code?
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