SPSS Assignment 5 (out of 6): One-Way ANOVA Research Methods in Psychology A (HPS201/HPS771) Laboratory Assignment One-Way ANOVA ______________________________________________________________ ****...

PLEASE READ IT PROPERLY AND ANSWER ALL THE QUESTIONS


SPSS Assignment 5 (out of 6): One-Way ANOVA Research Methods in Psychology A (HPS201/HPS771) Laboratory Assignment One-Way ANOVA ______________________________________________________________ **** ASSIGNMENT 5: One-Way ANOVA QUESTIONS **** Experiment Jurors place heavy weight on eyewitness testimony when deciding whether a suspect is guilty. Legal evidence suggests that jurors tend to give more weight to the testimony of eyewitnesses who report that they were confident in remembering the event. (http://www.scientificamerican.com/article/do-the-eyes-have-it/) Still, there is mixed evidence in the literature whether the confidence with which people remember an event is related to the accuracy of their memories. Your task as a researcher is to clarify this. To this end, you show a crime scene to 33 randomly selected individuals. You then count the number of mistakes they make in recalling the crime scene. Finally, you ask participants to rate how confident they were in recalling the crime scene. Based on their ratings, you assign each participant to either the low confidence group (n = 11), the medium confidence group (n = 11) or the high confidence group (n = 11). You then run a one-way ANOVA to test if the three groups differ in the number of mistakes made when recalling the crime scene. You obtain the following output from the analysis: _____________________________________________________________ Questions Note that these questions do not require SPSS output. 1. Complete the table below. (2 Marks) Source SS df MS F Between Groups (Treatment) 3 Within Groups (Error) 60 Total 2. What is the Partial eta squared for this research scenario (1 mark)? 3. Is the ANOVA statistically significant? Justify your response (1 mark) 4. Assume you are a Forensic Psychologist. What would be your advice to jurors based on the results of the above research? Justify your response. (2 Marks) 5. In the present study, the three groups could have been compared using t-tests. Why is it more appropriate to analyze the data from the experiment using a one-way ANOVA? (2 Marks) 6. Describe a research scenario where both t-test and One-way ANOVA would be equally as appropriate to address a research question. Justify your response (2 marks). TOTAL:/10 Marks 1