Psychology 210: Elementary Statistics One-Way Analysis of Variance SPSS Lab Labs.4.1 and 4.2 d) State the null hypothesis. Lab Objectives: e) State the alternative hypothesis. Participate in a modified experimental replication of the levels of processing study by Craik & Lockhart (1972) Understand within-subjects research design d) What is the critical region at alpha level of .05? . Conduct a one-way Analysis of Variance with Post-Hoc test using SPSS Craik and Lockhart (1972) proposed a model of memory that the degree to which verbal material is remembered by the participant is a function of the degree to which it was processed 2) ANALYSIS AND DECISION MAKING when it was initially presented. For example, imagine that you are asked to memorize a list of words. Repeating a word to yourself (a low level of processing) would not be expected to lead a) Are the results statistically significant, and what does this mean? Explain how you came up to as good recall as thinking about each word and trying to form associations between that with his conclusion (F-ratio, p-value, etc). word and some other word. Eysenck (1974) was interested in testing this model and looking to see whether "levels of processing" influence ability to recall verbal material. 50 participants were randomly assigned to one of 5 groups: b) How many post-hoc pairwise comparisons are there? Rhyming: read each word and thinking of a corresponding rhyming word Adjective: read each word and think of a corresponding adjective Imagery: form vivid images of each word (deep level of processing) . Counting: read through a list of words and simply count the number of letters in c) List all the possible pairs and whether they are significantly or not each word Intentional: read through the list and to memorize the words for later recall d) write a couple of sentences explaining what the results mean overall. (Make sure to start After reading through the list of words 3 times and applying one of the above strategies from the beginning with the factor, and mentioning the posthot test results as well) depending on condition, all participants were asked to write down all the words they could remember. Enter the following data into SPSS: e) Calculate the effect size for groups that have a significant difference using eta-squared. Explain what this means. (SS numbers available on SPSS output) 1) STUDY SET UP 12 - S between treatments. a) What is the factor (IV) and dependent variable (DV)? SS total b) How many levels of the factors are there? c) What do you think the research question is? (state in words)