Hi, I'm struggling with how to compare correlations coefficients between two measurements in three conditions of within-subject experiment?
I conducted one group of participants who participated in the three conditions of within-subject experiment, and I want to compare three correlation coefficients. I'm using both Prism8 and SPSS.
I found some info about comparing two correlations coefficients or repeated measure correlations.
(e.g., (1) http://quantpsy.org/corrtest/corrtest2.htm, (2) https://www.psychometrica.de/correlation.html#dependent, (3) https://lmarusich.shinyapps.io/shiny_rmcorr/)
(1) website calculates the Difference Between Two Dependent Correlations with One Variable in Common.
(2) website calculates the Equality of Several Correlation Coefficients
(3) website computes and visualizes repeated measures correlation
The second websites seem most similar to what I am looking for; nevertheless, they are only suitable for two or more independent correlation coefficients to be compared simultaneously.
I wonder if any method for comparing three conditions of correlation coefficients.
Any advice would be much appreciated.
Do a linear regression analysis and see how much every of the conditions explains of the dependent variable. You get the part correlations and when you square a part correlation you get a % of how much of the variance in the DV is explained by condition 1, 2 and 3. Then you can compare the 6 %
The following software ()http://comparingcorrelations.org/) allows this and the PLOS One paper cited there describes its use for various ways to correlations.
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