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How to assess whether IQ predicts emotional experiment more at time 1 or time 2 controlling for covariates?

I have the following data set of a two-wave longitudinal study in educational psychology. A group of 400 people did some questionnaire on IQ, personality and two different emotional states (sadness ...
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14 views

Controlling for respondents' propensity to rate high/low or moderate/extreme

I am doing a simple linear regression to test the relationship between voters' self-reported policy stands and their approval ratings for two hypothetical presidential candidates in a simulated ...
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44 views

Unexpected correlation, Method to account for the shared variance

Summary: While looking at the correlations I noticed a wired, relation. Variables: User comments - A; User community activity- B; Comments on user's wall - C (control) I expected that A and B will ...
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25 views

Base model regression with controls

Summary: I have a regression model hypothesizing mediation effect. Next to the variables I am interested to, I also have few control variables. First I want to express the base regression model. Then ...
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223 views

How to control for categorical variable in SEM?

I have a categorical control variable (say, project type) and a continuous DV (latent with 6 observed variables). How do I best control for the effect of project type on the latent DV?
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69 views

Too many controls?

I am purposely keeping this question vague since this has happened to me with multiple datasets. I have a DV and a few IV then several controls, and all looks fine. Then I add one more controls and ...