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I guess my approach would be to just include A,B,C as predictors of Z without testing whether A,B predict C (if I have no reason to assume this). I would look at the correlation matrix to detect potential variance inflation (whether A,B are correlated with C) in the regression model
@jkflake.bsky.social made such a good case for a really fundamental and devastating realization-if we can’t show thar our measures are measuring what they are suppose to be measuring-then everything after the methods section in a paper is meaningless. This should give us all pause and reflection
If C mediates the effect of A on Z, then the second regression would mistakenly show no effect of A on Z, only the effect of C on Z. The same applies to B. But this problem really depends on your causal assumptions re the relationships between A, B, C and Z
Happy Birthday!🥂 I would be interested to hear your discussion on the role of theory in research. Do we have too many theories or too little? Should we all strive to formalize our theories? Do our research questions need to be motivated by a theory? Something along these lines would be great
"A socioecological perspective on the gestural communication of great ape species, individuals & social units" w @galbadihi.bsky.social@alexsafry.bsky.social@nakedprimate.bsky.socialtandfonline.com/doi/full/10....youtu.be/KuDz6yhDk0Msoundcloud.com/kirsty-graha...
This is an audio recording of the 2022 Ethology, Ecology, and Evolution paper "A socio-ecological perspective on the gestural communication of great ape species, individuals, and social units" by Kirs
Pre-registrations, materials, data, code, and preprint also available: osf.io/ahy2b/
Perhaps there are some clinical studies showing the accuracy of Vivosmart on the HRV measure (I guess it would depend what exactly they mean by HRV - RMSSD, etc.)?
I am willing to make sacrifices on accuracy but it would be great to know the extent of the sacrifices. E.g. Vivosmart 3 calculates HRV, but I have no idea about the algorithm behind the calculations and how well it would match HRV calculated e.g. and from ECG signal.
Thanks. I've been using Vivosmart 3 for a couple of years now and am generally happy with the performance. I am thinking similar to you - everyday usage for a week(s), non-invasive, but accurate enough to detect emotional stress.