Deakin University 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 45 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
The first question does not require you to use the SPSS output.
TOTAL: /10 Marks
Deakin University 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 63 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 = 21), the medium confidence group (n = 21) or the high confidence group (n = 21). 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.
Source |
SS |
df |
MS |
F |
Between Groups (Treatment) |
2 |
|||
Within Groups (Error) |
180 |
|||
Total |
TOTAL: /10 Marks
Deakin University Research Methods in Psychology A (HPS201/HPS771) Laboratory Assignment Regression **** ASSIGNMENT 4: REGRESSION QUESTIONS **** Experiment
In recent years, mental skills techniques such as motor (kinesthetic) imagery have become popular tools to enhance performance on the football field. (http://www.theage.com.au/afl/st-kilda-saints/saints-training-to-win-mind-games-20150624-ghwxoi.html) For example, the St Kilda Football Club now teaches players how to imagine (visualize) their kicking action with the aim of improving kicking accuracy. The theory behind this approach is that imagining an action activates similar brain processes to actually performing that action. Your task as a researcher is to test if we can predict a player’s kicking accuracy from their ability to imagine kicking a football. To this end, you ask a sample of 60 St Kilda players to imagine kicking a football. You then asses the vividness of their mental (kicking) image using the Vividness of Movement Imagery Questionnaire (VMIQ-2), a well-validated imagery measure. Scores on the VMIQ-2 range from 12 to 60 with higher scores indicating better imagery ability (i.e., increased vividness of the imagined kick). You also measure each player’s kicking accuracy (scores range from 0-100 with higher scores indicating higher kicking accuracy). Finally, you run a regression analysis on the data to test the hypothesis that imagery ability (as assessed by VMIQ-2 scores) will be a significant predictor of kicking accuracy. You obtain the following output from the analysis:
Questions
TOTAL: /10 Marks
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