Questions tagged [simple-effects]
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Interpreting simple slopes in OLS regression with multiple interactions
I dug through previous simple slope/effect questions and couldn't find what I was looking for, but happy to be pointed to it if it exists. On p. 17 of Jaccard and Turrisi (2003), they offer the ...
Proper post-hoc tests (following ANOVA) to test out within/between subject differences
just as a disclaimer, the following questions may be quite basic but I somehow cannot wrap my head around which way to analyse data as there are different tests that do almost the "same" but ...
Simple effect analysis following mixed anova with significant interaction effect
i am a little bit confused, as to which simple effects i need to analyze after conducting a mixed anova. I have conducted a mixed anova with time (pre-post-) as the within-subject variable and group (...
Getting interaction contrasts from lmer in R from 3-way interaction with continuous variables
I ran a linear mixed-effects model looking at the effect of Stress and Lifestyle (HLI) on cognitive change over Time using the lme4 package in R... ...
An inherent inconsistency in interpreting the indirect effect in a mediation analysis?
Disclaimer: I am well aware that correlation and causation are different things, yet I will here write "A causes B" to keep it short. This is in any case completely unrelated to the point I ...
How are simple effects calculated in JASP (and how to calculate them properly)?
I'm conducting 3-way (2x2x2) repeated measures ANOVA in JASP with a main factor of interest called symm, and two other factors: emotion (neutral/fearful) and masking (masked/unmasked). I want to ...
How to interpret a significant effect present in a subset data but absent in the full data
My model has 3 predictors: Group (A vs. B) Condition (baseline vs. treatment) Memory (a continuous variable) The model gives an interaction between Condition and Group. I then tested the simple ...
Main effect vs simple effect
In the following linear model: $y = \beta_0 +\beta_1 x_1 +\beta_2 x_2 + \beta_3x_1x_2 + \epsilon$ what are called $x_i$? The term $x_1x_2$ is the interaction. In ANOVA, $x_i$ are named "main ...
Why are Simple Effects only used when the interaction is significant?
I have conducted a 2-way ANOVA and obtained a significant Main Effect in IV1 and IV2, but a non-significant interaction. Following that, I have analyzed IV1 using a test for Simple Effects and ...
Computing Simple Slopes for 3-Way Interaction in Multilevel Model
I have several significant 3-way interactions in a 2-level models (individuals nested in couples), and I am struggling with the computation of the simple slopes. Essentially, my categorical level-2 ...
Interaction not significant, but one simple effect significant: linear mixed model with lmer() in R
Currently cross-posted at https://stackoverflow.com/questions/63492814/interaction-not-significant-but-one-simple-effect-significant-linear-mixed-mod because I wasn't sure which site was more ...