Main effect vs. Interaction effect in ANOVA
- Thread starter SMcfarland
- Start date
- Tags anova interaction effect main effect
See the Sparsity of Effects principle: https://en.wikipedia.org/wiki/Sparsity-of-effects_principle
Also the "hierarchical ordering principle." I wrote a little about it on my blog a while ago: http://jakewestfall.org/blog/index.php/2015/05/11/the-hierarchical-ordering-principle/
So is your question theoretical, where you want to know if it is actually more difficult from a statistical calculation standpoint or does it comes more as a gestalt question.
As for the latter, and per Miner's link - I would say it can be very context based. For example I have recently ran for the first time genetic analyses and if you have a sound hypothesis, interactions can be abundant. E.g.) for what I was running - if you had two particular genes you under performed on most all cognitive measures.
As for the latter, and per Miner's link - I would say it can be very context based. For example I have recently ran for the first time genetic analyses and if you have a sound hypothesis, interactions can be abundant. E.g.) for what I was running - if you had two particular genes you under performed on most all cognitive measures.