Expert Answer:Research Questions to Answer

  

Solved by verified expert:please find the attached file for the research questions to answer.Answer each question fully, and make sure they are all right.On question #29 there are part in this question that I want you to answer them in details.
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I.
Multiple Choice
3) A sampling frame is…
a) bowling for a little while before getting started with the actual game
b) a list of every element (person) in a target population
c) required in order to do all types of sampling
d) the boundaries of a sample
e) D&C
f) B&C
5) Which of the following is true about establishing a causal relationship between
two variables?
a) Any correlation greater than .50 indicates a causal relationship
b) A positive association indicates cause, but not a negative association
c) Once you rule out at least a dozen alternative explanations then you can
have officially established causality.
d) None of the above
e) All of the above
7) Longitudinal data is necessary for which of the following?
a) Understanding how things change over time
b) Understanding an association between two variables
c) Rigorous qualitative data
d) Utilizing a Chi2
e) All of the above
8) A pre-post group design and A-B-A single subject design are both examples of:
a) Longitudinal data
b) Cross-sectional data
c) Qualitative data
d) Triangulated data
13) Institutional review boards do not do which of the following in reviewing
proposals?
a) Evaluate risks and benefits to participants
b) Assess plans for obtaining informed consent and maintain participant
confidentiality
c) Review all research proposals, regardless of the type or purpose of the
research, the same way
d) Assess procedures for data collection and measurement
16) You are interested in studying high school students at a high school in Chicago.
You have a class list of high school students at this one school. You want to draw a
random sample of 100 students. The class list is the __________________ (1pt.) and the
100 students you study constitutes your ______________________ (1 pt.).
a) sample
b) study design
c) sampling frame
d) population 4
17) You are looking at the relationship between grade level and hours of weekly TV
watching at three different schools. Which school shows a statistically significant
difference between the grades?
a) Grade 1 =mean 24 hours Grade 2 =mean 30 hours, p<.12 b) Grade 1 =mean 20 hours Grade 2 =mean 22 hours, p<.24 c) Grade 1 =mean 27 hours Grade 2 =mean 20 hours, p<.05 18) _______________________ (1 pt.) is concerned with the consistency of a measure whereas _______________________ (1 pt.) is concerned with the accuracy of a measure. a) Reliability b) Conceptualization c) Validity d) Operationalization e) Fidelity II. Case Analysis (multiple choice and short answer) You work at the Southern Illinois regional mental health unit that has 5 clinics across the region and serves 400 clients. You are studying the impact of a 10-week new therapy that is supposed to reduce anxiety. You randomly select 100 of the clients to participate in an evaluation of the therapy. After selecting participants, you randomly assign 50 clients to the new therapy and 50 clients to receive the standard therapy offered at the clinic. You measure anxiety using a generalize anxiety scale that ranges from 1 to 21. A score of 21 being the highest level of anxiety. You measure the study participant’s anxiety before they receive their assigned therapy and at the completion of all the therapy sessions. 19) What is the independent variable? 20) What is the dependent variable? 21) This study uses what type of sampling? a) probability sampling b) non-probability sampling c) snow-ball sampling d) convenience sampling 22) This study is an example of a: a) Case Study b) Experimental Design Study c) Qualitative Study d) Formative Evaluation 5 23) What type of statistical test might you use to assess if the new therapy is better than the standard therapy? a) Chi-Square b) Correlation c) T-test d) IQ-test 24) You find that clients who received the new therapy report an average increase of 2.4 points on the generalized anxiety scale and the clients who received the standard therapy report and average increase of 1.9 points on the generalized anxiety scale. A statistical test of significance produces a p-value = 0.11. Which of the following would you conclude? a) Fail to reject the null hypothesis that the therapies produce the same change in generalized anxiety. b) Reject the null hypothesis that the therapies produce the same change in generalized anxiety 25) Identify one factor that could threaten the internal validity of this study and explain how might impact internal validity (2 pt.) 26) Identify one strength of this study and explain why it would be considered a strength (2pts.) III. Short Answer 26) Describe how a researcher can establish and communicate the rigor of data collection and analysis in conducting qualitative research. (2 pts.) 27) Describe the difference between random selection and random assignment? (2 pts.) 28) Describe one reason having a larger sample size is desirable and one reason why/how in some cases a smaller sample size may be beneficial compared to a larger sample size. (2 pts.) 29) Based on the scenario below to write a response to the proposal as a member of an IRB review committee clearly identifying the principles you are drawing on to construct your opinion/response. What questions do you have for the researchers? What information do you need to help you make your decision? What conditions might be placed on a decision to permit the project to proceed? What issues might prevent you from permitting the project to proceed as described (5 pts.) Scenario #1 – Considering Children’s Dissent Ryan is a 10-year old boy who was diagnosed with ADHD at age 7. Put on Ritalin at age 8, it was quickly discovered that he did not respond to this medication (about 20-30% of children do not respond). Ryan’s physician also prescribed two other medications, Adderall, and dextroamphetamine, to which he also did not respond. Ryan has been having many problems in chool. Although originally supportive of integrating Ryan into a “normal” 3rd grade classroom (Ryan is repeating 3rd grade), both Ryan’s teacher and school principal have recently expressed concern that not only is Ryan not learning, but he is also disrupting other students as well, and there have been several complaints from parents of other children. Upon evaluation, Ryan seems to be aware that his inability to pay attention and follow directions creates problems for himself, his family, and his class, but he doesn’t want to try another medication. In addition to not helping his hyperactivity and impulsivity, Ritalin made Ryan very nauseous, depressed, tired yet unable to sleep, and blurred his vision. He also doesn’t like taking medicine in general because it makes him feel “different” from the other kids in his class and from his older brother and younger sister. He already is very angry at the fact that he has to repeat 3rd grade. You are a researcher conducting a randomized controlled trial on Settler, a potential ADHD drug that shows promising results for those children who have not responded to other drugs used to treat ADHD. When you discuss enrolling Ryan in the study, Ryan’s parents immediately sign the consent form and have very few questions or reservations. However, when Ryan is told that he is going to be trying out a new medicine that might work better than the others, he says, “It doesn’t matter if it’s a new medicine. Medicine makes me sick, and my brother and sister don’t have to take it, so I shouldn’t have to either.” Ryan refuses to sign an assent form. Ryan appears to understand the potential benefits and risks of participation, despite his somewhat aggressive manner. ... Our essay writing service fulfills every request with the highest level of urgency. attachment

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