SPSS Assignment 6 (our of 6): ANOVA Post-Hoc Tests Research Methods in Psychology A (HPS201/HPS771) Laboratory Assignment ANOVA Post-Hoc Tests...

PLEASE READ IT PROPERLY AND ANSWER ALL THE QUESTIONS


SPSS Assignment 6 (our of 6): ANOVA Post-Hoc Tests Research Methods in Psychology A (HPS201/HPS771) Laboratory Assignment ANOVA Post-Hoc Tests ______________________________________________________________ **** ASSIGNMENT 6: ANOVA POST-HOC QUESTIONS **** Experiment Cognitive theory suggests that college students learn best if they study later in the day (https://www.frontiersin.org/articles/10.3389/fnhum.2017.00188/full). Your task as a researcher is to test this idea. To this end, you recruit 30 undergraduate students of similar cognitive and academic ability. You then randomly allocate each student to one of three groups (Group A, Group B and Group C). All students study for the same exam over a two-week period (all students study for the same number of hours). Students in Group A study in the morning. Students in Group B study in the afternoon. Students in Group C study in the evening. At the end of the two-week period, all students sit the same exam. Scores on the exam range from 0 to 40 with higher scores indicating better exam performance. Finally, you conduct a one-way ANOVA to test if the three groups differ in their mean exam scores. You obtain the following output from the analysis: _____________________________________________________________ _____________________________________________________________ Questions 1. If an ANOVA has been conducted, when is it appropriate to conduct post-hoc analyses and why? (2 Marks) 2. With help from the unit materials, report the results of the analysis (including relevant post-hoc analyses if applicable) in APA format including all relevant information. (4 Marks) 3. Assume you are a Cognitive Psychologist. Based on the results of this study, what would be your recommendation to students studying for an exam? Justify your response. (2 Marks) 4. Recent research suggests that excessive screen time on electronic devices may be linked to reduced cognitive function. As a Health Psychologist, you are interested in examining this hypothesis and conduct a study to test it. Specifically, you take a random sample of 62 healthy young adults aged 18-35 years from Melbourne. Each participant has their IQ measured using the Wechsler Intelligence Scale (M= 100, SD= 15). You then ask each participant how much time (in minutes) they spend viewing the screen of their electronic devices on a daily basis. Based on World Health Organisation recommendations that adults should not engage in more than 25 minutes of ‘screen time’ per day, you allocate your participants into one of three groups based on their screen time: · ‘Low screen time’, less than 25 minutes of screen time per day · ‘Moderate screen time’, 25-40 minutes of screen time per day · ‘High screen time’, more than 40 minutes of screen time per day A One-Way ANOVA was then conducted to compare the mean IQ of those who have ‘low’, ‘medium’ and ‘high’ levels of screen time. The following SPSS output was generated: Dr Goldberg concludes that young adults who have 25 minutes or more of screen time per day are at risk of presenting with low IQ. Would you say that this conclusion is valid based on the data? Justify your response (2 marks). TOTAL:/10 Marks 1