2021 Final Exam (Elaborated)PSY550-Research Methods

2021 Final Exam (Elaborated)PSY550-Research Methods2021 Final Exam (Elaborated)PSY550-Research Methods2021 Final Exam (Elaborated)PSY550-Research Methods.2021 Final Exam (Elaborated)PSY550-Research MethodsChuck 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 objectionsExplain the pros and cons of longitudinal, cross-sectional, and sequential designsAfter 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?4. Define the term quasi-experiment and discuss the pros and cons of this research method.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).