Dear all,
For my research I have the following facts:
- I have two categorical IVs:
- treatment condition called competition, which has three conditions ("low", "medium" and "high")
- Another factor that is given to half of the group, called accountability (two options: "non-accountability" and "accountability")
- Hence, I have a 3x2 experiment with 20 participants in each group.
- My DV is a scale variable
- I also have a set of control variables (both scale and categorical)
Then:
- Hypothesis one is that if you go from low to medium to high, the DV will increase
- Hypothesis two is that if you introduce accountability, the differences between the low, medium and high group decrease.
The problem I encounter is that I have three groups for the competition condition (which are coded 0, 1 and 2). If I multiply it with accountability, they become 0, 2 and 4, which is a problem according to my supervisor. Therefore, a factorial ANOVA seems to be a suboptimal solution.
He recommended a regression analysis with dummy variables of the three competition scenarios. But then still I have no idea on how to test for the interaction effect between competition and accountability.
For my research I have the following facts:
- I have two categorical IVs:
- treatment condition called competition, which has three conditions ("low", "medium" and "high")
- Another factor that is given to half of the group, called accountability (two options: "non-accountability" and "accountability")
- Hence, I have a 3x2 experiment with 20 participants in each group.
- My DV is a scale variable
- I also have a set of control variables (both scale and categorical)
Then:
- Hypothesis one is that if you go from low to medium to high, the DV will increase
- Hypothesis two is that if you introduce accountability, the differences between the low, medium and high group decrease.
The problem I encounter is that I have three groups for the competition condition (which are coded 0, 1 and 2). If I multiply it with accountability, they become 0, 2 and 4, which is a problem according to my supervisor. Therefore, a factorial ANOVA seems to be a suboptimal solution.
He recommended a regression analysis with dummy variables of the three competition scenarios. But then still I have no idea on how to test for the interaction effect between competition and accountability.