15.40 Other response variables.
Refer to the previous exercise. In settings such as this, researchers collect data for several response variables. For this study, they also constructed variables that were called attitude toward the brand, total thoughts, support arguments, and counterarguments. Here are the means:
| Attitude to brand | Total | |||||
| Repetition | Repetition | |||||
| Familiarity | 1 | 2 | 3 | 1 | 2 | 3 |
| Familiar | 4.67 | 4.65 | 5.06 | 1.33 | 1.93 | 2.55 |
| Unfamiliar | 3.94 | 4.79 | 4.26 | 1.52 | 3.06 | 3.17 |
| Support | Counter | |||||
| Repetition | Repetition | |||||
| Familiarity | 1 | 2 | 3 | 1 | 2 | 3 |
| Familiar | 0.63 | 0.67 | 0.98 | 0.54 | 0.70 | 0.49 |
| Unfamiliar | 0.76 | 1.40 | 0.64 | 0.52 | 0.75 | 1.14 |
For each of the four response variables, give a graphical summary of the means. Use this summary to discuss any interactions that are evident. Write a short report summarizing the effect of repetition on the response variables measured, using the data in this exercise and the previous one.