Hello,
I'm currently writing up my results section for my dissertation that's looking at the nocebo effect. I'm using a repeated-measures ANOVA that has three factors each with two levels, synchronicity (synchronous vs. asynchronous), phase (pre-conditioning vs. post-conditioning), and treatment (hyperalgesic vs. control). The dependent variable I'm looking at is Unpleasantness, and I found a significant synchronicity by phase interaction, with the asynchronous condition having a higher unpleasantness ratings than synchronous on the pre-conditioning phase, with this falling drastically on the post-conditioning phase, where as it rises slightly on the synchronous condition. I decided to conduct a paired-samples t-test on this using syncronous pre-conditioning vs. asynchronous pre-conditioning/synchronous post-conditioning vs. asynchronous post-conditioning and synchronous pre-conditioning vs. synchronous post-conditioning/ asynchronous pre-conditioning vs. asynchronous post-conditioning. However, none of these results are significant, and while I know this is possible, I don't exactly know what it means.
I'm currently trying to work out why there is a significant interaction if the t-tests show that there is nothing going on. I've attempted to factor in the treatment in the tests and found that it is the pre-conditioning control site for asynchronous that is significant only, this would also mean that I had a three-way interaction right? What I've been thinking is that the reason these t-tests don't support the interaction is because treatment is also necessary to cause a difference, but once more I just keep thinking that this would also mean that I would get a three-way interaction.
Could anyone help explain possibilities as to how this can happen? I hope I've explained it properly. Just let me know if you need more information.
Thanks a lot!!
I'm currently writing up my results section for my dissertation that's looking at the nocebo effect. I'm using a repeated-measures ANOVA that has three factors each with two levels, synchronicity (synchronous vs. asynchronous), phase (pre-conditioning vs. post-conditioning), and treatment (hyperalgesic vs. control). The dependent variable I'm looking at is Unpleasantness, and I found a significant synchronicity by phase interaction, with the asynchronous condition having a higher unpleasantness ratings than synchronous on the pre-conditioning phase, with this falling drastically on the post-conditioning phase, where as it rises slightly on the synchronous condition. I decided to conduct a paired-samples t-test on this using syncronous pre-conditioning vs. asynchronous pre-conditioning/synchronous post-conditioning vs. asynchronous post-conditioning and synchronous pre-conditioning vs. synchronous post-conditioning/ asynchronous pre-conditioning vs. asynchronous post-conditioning. However, none of these results are significant, and while I know this is possible, I don't exactly know what it means.
I'm currently trying to work out why there is a significant interaction if the t-tests show that there is nothing going on. I've attempted to factor in the treatment in the tests and found that it is the pre-conditioning control site for asynchronous that is significant only, this would also mean that I had a three-way interaction right? What I've been thinking is that the reason these t-tests don't support the interaction is because treatment is also necessary to cause a difference, but once more I just keep thinking that this would also mean that I would get a three-way interaction.
Could anyone help explain possibilities as to how this can happen? I hope I've explained it properly. Just let me know if you need more information.
Thanks a lot!!