Instructions

This week, you have learned about t-tests and ANOVA and will apply what you have learned in the evaluation of several research scenarios. For this task, you will read each research scenario and answer the questions regarding each one.

Research Scenario 1
A researcher is interested in the effects of a new weight loss supplement. Participants in this double-blind study are randomly assigned to either a group that receives the new supplement or a group that receives a placebo. Participants are weighed before starting the program. After 6 weeks of taking either the new supplement or the placebo, participants return to the lab to be weighed.

• Provide the appropriate null and alternative hypotheses.
• Determine which type of analysis would be appropriate to answer this research question. Be specific and support your answer using the textbook or other course materials.
• Name the independent and dependent variables used in the analysis. What are the levels of the independent variable?
• Indicate the levels of measurement for each variable.
• Describe the Type I error for this study.
• Describe the Type II error for this study.

Research Scenario 2
A researcher is interested in whether certain memory strategies help people to remember information. This researcher employs students from a local college, and then randomly assigns them to one of three groups—the visualization group, the mnemonic technique group, and the rote repetition group. Participants in each group receive an hour of instruction regarding how to use the particular technique to remember lists of words. After the instruction, all participants are presented with a list of 60 words that they are instructed to remember. The words are presented one-at-a time on a computer screen. After the last word is presented, all participants are instructed to recall as many words as possible by writing them on a blank sheet of paper. All participants are given 10 minutes to recall the words.

• Provide the appropriate null and alternative hypotheses.
• Indicate which type of analysis would be appropriate to answer this research question. Be specific and support your answer using the textbook or other course materials.
• Name the independent and dependent variables used in the analysis. What are the levels of the independent variable?
• Indicate the levels of measurement for each variable.
• Describe the Type I error for this study.
• Describe the Type II error for this study

Research Scenario 3
A local manufacturing company is interested in determining whether their employees are as happy with their jobs as other employees. The manufacturing company asked the workers, who volunteered to participate, to rate their happiness at work on a scale from 1 to 10 where 1 was not at all happy and 10 was extremely happy. The manufacturing company found that the mean happiness rating for their employees is 7.3. In the general population of workers in the United States, the mean happiness rating is 6.

• Provide the appropriate null and alternative hypotheses.
• Determine which type of analysis would be appropriate to answer this research question. Be specific. Please support your answer using the textbook or other course materials.
• Name the variables used in the analysis.
• What are the levels of measurement for each variable?
• Describe the Type I error for this study.
• Describe the Type II error for this study

Length: 1-2 pages

Your paper should demonstrate thoughtful consideration of the ideas and concepts presented in the course by providing new thoughts and insights relating directly to this topic. Your response should reflect scholarly writing and current APA standards

For this assignment, you will work with two case studies (linked in the Resources): •The Case of Jenny:  Jenny is a 29-year-old single female who lives with her mother. She is bisexual, but is not currently dating. Jenny was recently in a relationship with a man, and they lived together briefly. They parted amicably when they just did not seem to be enjoying being together. Jenny moved back in with her mother, Barbara, to allow her boyfriend to take in a roommate to cover her share of the rent. She works as a bank teller and makes a modest income. She felt moving back home would allow her to provide some financial help to her mother. Jenny’s mother raised her as a single parent. Jenny and Barbara have shared many ups and downs over the years. Things were never easy, but they always made it through. Barbara is becoming increasingly concerned that Jenny is giving up on life and needs to snap out of it. •The Case of Marisol:  Marisol is a 40-year-old single female from a tight-knit Puerto Rican family. She is employed full time as a data analyst for a technology company. She has steadily progressed in her career by working for relatively small companies, where her role allowed her to work relatively independently. Unfortunately, working for small organizations was less stable financially, so she has been working for a larger company for the past four years. Interacting with a larger work group has challenged her comfort zone. She prefers to spend time with a network of close friends she has known most of her life, with whom she visits one-on-one. Her family lives in the area, and she sees them frequently. Her parents and older brother have always provided a support system and practical help. She enjoys quiet evenings alone or at the home of her brother and his family. Her friends and family privately wonder why she has never dated or wanted to travel.  Download Unit 5 Assignment Template. Use it to complete your assignment.  Instructions  For each case study, you will complete a descriptive diagnosis using tools you select from the list of assessment tools provided later in the assignment. Each case requires the following information to be addressed: •Identify presenting concerns from the client’s perspective as described in the video and accompanying narrative. Include relevant cultural and systemic considerations that frame the client’s presentation. •Describe what information has been provided in each case that helps to determine which disorders are appropriate for consideration (differential diagnoses) for a final diagnosis. Evaluate how at least one assessment tool, which is listed in the List of Assessment Tools resource, will aid in obtaining further information to back up your final diagnosis. The Differential Diagnosis Decision Tree may be helpful to guide this process. •Present DSM-5 and ICD-10 codes, including relevant Z codes. •Provide a descriptive rationale for the DSM diagnosis that best fits the information provided including relevant ICD codes. This should be written in a narrative form using complete sentences. Support your rationale with scholarly sources. Optional readings found in the course syllabus may be particularly relevant. •Determine if a medication consultation is appropriate and provide a rationale with support from scholarly sources.  List of Assessment Tools and Supporting Resources •Beck, A. T., Epstein, N., Brown, G., & Steer, R. (1988). Beck Anxiety Inventory. Psyctests, doi:10.1037/t02025-000 ◦Bardhoshi, G., Duncan, K., & Erford, B. T. (2016). Psychometric meta‐analysis of the English version of the Beck Anxiety Inventory. Journal of Counseling & Development, 94(3), 356–373. ◦Review this source to review how to interpret the Beck Anxiety Inventory.   •Derogatis, L. R. (1977). Symptom checklist-90–revised. Psyctests, doi:10.1037/t01210-000 ◦Grande, T. L., Newmeyer, M. D., Underwood, L. A., & Williams, C. R. (2014). Path analysis of the SCL-90-R: Exploring use in outpatient assessment. Measurement and Evaluation in Counseling and Development, 47(4), 271–290. ◦Review this source to review how to interpret the SCL-90-R.   •Prevatt, F., Dehili, V., Taylor, N., & Marshall, D. (2015). Anxiety Symptom Checklist. Psyctests, doi:10.1037/t39906-000 •Beck Depression Inventory–II ◦Erford, B. T., Johnson, E., & Bardoshi, G. (2016). Meta-analysis of the English version of the Beck Depression Inventory–Second edition. Measurement and Evaluation in Counseling and Development, 49(1), 3–33. ◦This resource will help you use the Beck Depression Inventory-II if you access that assessment tool. 5-7 double-spaced pages.