PSY550 Research Methods
Week 8 Final Exam
1 For each of the following examples, explain whether the researcher has made a correct decision or has made a Type 1 or Type 2 error. Explain why.
Dr. G rejects the null hypothesis although the independent variable had no effect.
Dr. R rejects the null hypothesis when it is false.
Although the independent variable had an effect, Dr. E does not reject the null hypothesis
2 Explain the value of reversal designs (ABA designs) in single-case research.
3 Explain how a one-way analysis of variance works. How do you use between- and within-group variability?
4 After watching nursery-school children, Ken Garoo wants to test the hypothesis that some toys are more fun to play with than others. He decides to compare “fun” toys (blocks) with “unfun” toys (stuffed animals). He also wishes to see if there is a sex difference, as well, so sex is added as an independent variable. A) What kind of design is needed? B) Diagram it out. C) Assuming 20 subjects are needed per cell, how many subjects are needed for this study?
5 Bill Board is “lording” his SAT score over his friend, Rhoda Dendron, who took the ACT. “You only got a 25 in math,” he chortled, “while I got a 300 in math.” Given that the SAT has a μ of 500 and a σ of 100, and the ACT has a μ of 20 and a σ of 5, what is wrong with Bill’s logic (give the answer in both z scores and percentile ranks).
6 Describe a two-matched groups design. How is the matching done?
7 Chuck Wagon is very excited about the within-subjects approach. “Now I’ll never need to run large numbers of subjects again,” he says. However, Chuck has forgotten that within-subjects designs may be a) useless, b) impossible, c) confounded by order effects, or d) impractical when excessive subject time spent in an experiment makes data inaccurate. Give an example of each of these four objections.
8 A researcher has studied subjects’ ability to learn to translate words into Morse code. He has experimented with two treatment conditions: in one condition, the subjects are given massed practice; they spend 8 full hours on the task. In the other condition, subjects are given distributed practice; they also spend 8 hours, but their practice is spread over four days, practicing 2 hours at a time. After the practice, all subjects are given a test message to encode; the dependent variable is the number of errors made. The researcher has matched the subjects on intelligence. The results are in the following table. Decide which statistical test would be appropriate, carry out the test, and evaluate the outcome. Assume a significance level of .05 and that the direction of the outcome has not been predicted.
9 Explain the pros and cons of longitudinal, cross-sectional, and sequential designs.
10 Define the term quasi-experiment and discuss the pros and cons of this research method.
Get Your Paper Before the Deadline. Our Services are 100% private and Confidential
Useful Links That Will Help You Around
Link to new order https://studentsolutionsusa.com/orders/stud/new
link to login page https://studentsolutionsusa.com/orders/login
New user registration link https://studentsolutionsusa.com/orders/register
Forgot Password https://studentsolutionsusa.com/orders/forgot/password
FREQUENTLY ASKED QUESTIONS
Question: How does this work?
Answer: Good Question. We are a group of a freelance board of students and professional essay writers. At our website, you may get help with any type of academic assignments: essay, coursework, term paper, business plan, case study, article review, research paper, presentation, and speech. Top writers can help with complex assignments such as dissertations, thesis papers, etc. All of them are professionals possessing excellent knowledge in their field of expertise, perfect writing skills, quality, and speed. When you place an order on our website, we assign it to the best writer. Once the writer finishes the work, the paper is submitted to our quality assurance desk who go through it and ensure it is unique and plagiarism free and that the instructions were followed to the detail. After this step we upload the paper in your account, we also send a copy to the email that you used to register the account with. we can guarantee you that the paper will be 100% plagiarism free. Besides, our services are 100% private and confidential
Question: How do I place an Order after getting to the order page
Answer: There are three major steps in the ordering process
Step 1 ....................................................paper details In this step, you will fill in the instructions of your paper; you can upload any materials that you feel will make your assignment a success. Besides, you can also email us at [email protected] Remember to specify the correct academic level. Please note that sources mean the number of references.
Step 2...................................................... Price calculation Kindly specify the number of pages, type of spacing and the correct deadline. This step will give you the estimated cost minus discount -- you may add the extra features if you wish.
Step 3 ....................................................discount and payment Use the discount code HAPPY2018 to enjoy up to 30% discount of your total cost After this step, proceed to safe payment; you can checkout using your card or PayPal Please note we will send the complete paper to the email you will provide while registering. A copy will also be uploaded to your account
Question: How will I know when my paper is complete? or How will I get the complete Paper?
Answer: Once we are done with the paper, we will be uploaded to your account. A copy will also be sent to the email you registered with. We can guarantee you the following:- 1. Our service is private and confidential; we don't spam or share your contacts with anyone 2. The final paper will be plagiarism free. We will send a Turnitin Report to the email you registered with 3. At our company, willing to do free unlimited revisions until you are satisfied with your paper
Question:- Am a new client, How can I get the guarantee that the paper will be completed and sent to me before my deadline?
Answer: Thank you for expressing your concerns. We would love to have you as our loyal customer. We are certain if we do good work, you will come back for me. Besides, you will give us referrals to your friends and family. For that reason, we can’t fail to deliver your paper within your specified time frame. We will ensure we submit the paper on time so that you can have enough time to go through it, if you have problems with the paper delivered, you can request a free revision. You are entitled to as many revisions as you would wish until you get a paper that satisfies you
Useful Links That Will Help You Around
Link to new order https://studentsolutionsusa.com/orders/stud/new
link to login page https://studentsolutionsusa.com/orders/login
New user registration link https://studentsolutionsusa.com/orders/register
Forgot Password https://studentsolutionsusa.com/orders/forgot/password