Read the following experiment, which was similar to a real study conducted by Wells and Petty (1980), Wells and Petty wanted to test the assumption that people infer their attitudes from their own physical responses to a persuasive argument. They had their participants listen to one of two persuasive arguments: an argument for an increase in tuition or an argument for a decrease in tuition. While they were listening, half the participants were asked to nod their heads up and down during the presentation, while the other half was told to shake their heads side to side. Then they were asked how much of a change in tuition (either increase or decrease depending on which argument they heard) they were willing accept. The averaged amounts of tuition changes are recorded below. Type of head movement Nod Shake Row means $635 $480 $557.5 Type of argument Tuition increase Tuition decrease Column means $400 $490 $445 S517.50 $485 1. What are the IV(s) and DV(s)? IV(s): 2. What kind of design is this? 3. What kind of inferential statistics would you run on these data? How many statistics (ie, main effects and interactions) would you have in this kind of analysis? words 4. Describe the pattern of the main effects (we would need to actually run the ANOVA see if there are any statistically significant differences). 5. To help visualize and interpret whether there is an interaction, first graph the data from the previous page. Then explain what it means. 700 525 Amount of acceptable tuition change Nod Shake 350 175 0 Tuition increase Tuntion decrease 5. To help visualize and interpret whether there is an interaction, first graph the data from the previous page. Then explain what it means. 100 525 Amount of acceptable tuition change Nod Shake 350 175 Tuition increase Tuition decrease 6. What are mediators or moderators or controls that might be important here Read the following experiment, which was similar to a real study conducted by Wells and Petty (1980), Wells and Petty wanted to test the assumption that people infer their attitudes from their own physical responses to a persuasive argument. They had their participants listen to one of two persuasive arguments: an argument for an increase in tuition or an argument for a decrease in tuition. While they were listening, half the participants were asked to nod their heads up and down during the presentation, while the other half was told to shake their heads side to side. Then they were asked how much of a change in tuition (either increase or decrease depending on which argument they heard) they were willing accept. The averaged amounts of tuition changes are recorded below. Type of head movement Nod Shake Row means $635 $480 $557.5 Type of argument Tuition increase Tuition decrease Column means $400 $490 $445 S517.50 $485 1. What are the IV(s) and DV(s)? IV(s): 2. What kind of design is this? 3. What kind of inferential statistics would you run on these data? How many statistics (ie, main effects and interactions) would you have in this kind of analysis? words 4. Describe the pattern of the main effects (we would need to actually run the ANOVA see if there are any statistically significant differences). 5. To help visualize and interpret whether there is an interaction, first graph the data from the previous page. Then explain what it means. 700 525 Amount of acceptable tuition change Nod Shake 350 175 0 Tuition increase Tuntion decrease 5. To help visualize and interpret whether there is an interaction, first graph the data from the previous page. Then explain what it means. 100 525 Amount of acceptable tuition change Nod Shake 350 175 Tuition increase Tuition decrease 6. What are mediators or moderators or controls that might be important here
