Randomization can occur at two points in an experimental study. Design your own study, specifying...
Randomization can occur at two points in an experimental study. Design your own study, specifying whether your selection of subjects is randomized or non-randomized. Also note whether the assignment to treatment and control groups is randomized or non-randomized. What are the main characteristics of your experiment that make it either randomized or non-randomized?
Be sure your example is for experimental research and not a survey, case study, or correlational design.
Homework Answers
Let's suppose that we want to conduct an experiment to find if meditation decreases exam anxiety among college students. To recruit participants, we create an advertisement that invites students from a particular university to join. In the end, we have 100 students willing to participate in the study. This would be an example of a non-randomized sample selection. For our experiment, we need two groups, one that receives no meditation sessions before exams and obedience that receives meditation sessions before exams. For each participant in the study, we randomly assign them to one of these two groups. This would be considered an example of random assignment.
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Randomization can occur at two points in an experimental study. Design your own study, specifying...
A research study is conducted where 15 participants complete a 12-week control period followed by a...
A research study is conducted where 15 participants complete a 12-week control period followed by a 12-week exercise intervention. What type of research is this? True experimental Correlational Pre-experimental Quasi-experimental Question 2 (1 point) ✓ Saved What type of research collects fairly unstructured data via interviews and focus groups? Quantitative Qualitative Which type of research is attempting to establish the presence/absence of "cause- effect"? Correlational Descriptive Experimental Historical Question 4 (1 point) ✓ Saved When considering the threats to internal...
1. A process whereby the investigator assigns subjects to either the treatment or comparison group is...
1. A process whereby the investigator assigns subjects to either the treatment or comparison group is known as…. a) Non-compliance b) Equipoise c) Randomization d) Blinding 2. An analysis that includes all subjects who were randomized to the treatment and comparison groups, regardless of whether the received or completed their assigned study protocol. a) Run-in period b) Efficacy analysis c) Comparability d) Intend-to-treat analysis 3. A study that commonly includes subjects without regard to exposure or disease status and that...
1. Jenny wants to do an online study that requires father and child to complete the...
1. Jenny wants to do an online study that requires father and child to complete the questionnaire together. Which of the following is the best advice for mailing it on line? a. Send it on a weekend when both parent and child are likely to be home together b. Send it in the morning so that it is waiting for the child to return home from school and the father to return home from work c. Send it first thing...
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....
A new drug treatment for cardiac thrombus claims to have a higher success rate than the current drug. A strong sign of the potential success is the lack of internal hemorrhaging starting 2 days after...
A new drug treatment for cardiac thrombus claims to have a higher success rate than the current drug. A strong sign of the potential success is the lack of internal hemorrhaging starting 2 days after treatment. 168 patients who require treatment for cardiac thrombi are randomized after agreeing to participate in a trial of the new drug. The researchers were interested in whether the new drug reduced the need for blood transfusions due to internal hemorrhage compared to the current...
Correlational versus Experimental Studies 1. a. describe a correlation b. describe an experiment C. describe the...
Correlational versus Experimental Studies 1. a. describe a correlation b. describe an experiment C. describe the difference between correlations and experiments For each of the following studies: 2. Decide whether the study is correlational or experimental. 3. Describe why you made your choice between an experiment or correlation. Do not simply restate the definition of an experiment or correlation. For each study below, do "a" or "b", but not both. a. If the study is correlational, identify the two variables...
Subject: Experimental Psychology 2. A researcher wishes to learn whether college students use more slang when...
Subject: Experimental Psychology 2. A researcher wishes to learn whether college students use more slang when speaking with a person their own age than when speaking with an older person. Design a within-subjects experiment to test this hypothesis. Divide your responses into the following sections: 1. Research question, hypotheses, and design, 2. Participants, 3. Measures, and 4. Procedures. As a guide, be sure to include the following: a. Provide a clearly written research question, clearly state your null and alternative...
Can skip A. Mainly need help with B & C. Thank you! 9.40 Experimental design. The...
Can skip A. Mainly need help with B & C.
Thank you!
9.40 Experimental design. The clinical trial was a com- pletely randomized experiment that assigned 240 patients at random among four treatments as follows: ANTIBIOTIC PILL PLACEBO PILL 53 64 Steroid spray Placebo spray 60 63 (a) Outline the design of the experiment. (b) How will you label the 240 subjects? (c) Explain briefly how you would do the random assignment of patients to treatments. Assign the first five...
27. Interpret your findings that you calculated in # 26. study design. c. experimental 28. The...
27. Interpret your findings that you calculated in # 26. study design. c. experimental 28. The well-known Framingham Study employs the a case-control b. cohort 20. When selecting control subjects for a case-control study, the control group members should (select the best answer): resemble the case subjects b. have already had the disease of interest have had no opportunity to be exposed to the disease. be very ill hospital patients 30. True False W hen using the cohort study design...
Choose the study design that best matches each statement described below. The study design may be...
Choose the study design that best matches each statement described below. The study design may be used more than once or none at all. (24 points) Statement Study Design ____ Blinding or masking is used to control potential bias. Case-Control ____ Observational epidemiological studies, this design is cheaper and faster to conduct because of the usage of already existing data. Cross-sectional ____ Control groups can receive the current “standard” treatment or a placebo. Ecological ____ Data on exposure and outcome...
A research study is conducted where 15 participants complete a 12-week control period followed by a 12-week exercise intervention. What type of research is this? True experimental Correlational Pre-experimental Quasi-experimental Question 2 (1 point) ✓ Saved What type of research collects fairly unstructured data via interviews and focus groups? Quantitative Qualitative Which type of research is attempting to establish the presence/absence of "cause- effect"? Correlational Descriptive Experimental Historical Question 4 (1 point) ✓ Saved When considering the threats to internal...
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....
Correlational versus Experimental Studies 1. a. describe a correlation b. describe an experiment C. describe the difference between correlations and experiments For each of the following studies: 2. Decide whether the study is correlational or experimental. 3. Describe why you made your choice between an experiment or correlation. Do not simply restate the definition of an experiment or correlation. For each study below, do "a" or "b", but not both. a. If the study is correlational, identify the two variables...
Can skip A. Mainly need help with B & C.
Thank you!
9.40 Experimental design. The clinical trial was a com- pletely randomized experiment that assigned 240 patients at random among four treatments as follows: ANTIBIOTIC PILL PLACEBO PILL 53 64 Steroid spray Placebo spray 60 63 (a) Outline the design of the experiment. (b) How will you label the 240 subjects? (c) Explain briefly how you would do the random assignment of patients to treatments. Assign the first five...
27. Interpret your findings that you calculated in # 26. study design. c. experimental 28. The well-known Framingham Study employs the a case-control b. cohort 20. When selecting control subjects for a case-control study, the control group members should (select the best answer): resemble the case subjects b. have already had the disease of interest have had no opportunity to be exposed to the disease. be very ill hospital patients 30. True False W hen using the cohort study design...
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