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Resources and networking for those who conduct or interpret meta-analyses related to any phenomenon that is gauged in multiple studies.

Garett Howardson
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Interaction between two moderators
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I'm looking for resources on using meta-regression to estimate the interactive effects of two moderators on effect sizes. For example, I have coded for scale specificity, which I expect to explain…Continue

Tags: interactions, moderators

Started this discussion. Last reply by Garett Howardson Nov 27, 2012.

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Garett Howardson replied to Garett Howardson's discussion Standardized Effect Size for Overall Model Fit in Structural Equation Modeling in the group Calculating Effect Sizes and Their Variances
"Hello Dr. Cheung,   Thank you for your response - it was very helpful.   Garett"
Dec 27, 2012
Mike Cheung replied to Garett Howardson's discussion Standardized Effect Size for Overall Model Fit in Structural Equation Modeling in the group Calculating Effect Sizes and Their Variances
"Hi Garett, It sounds interesting. But it appears that there are lots of issues that you need to address. The followings are some thoughts. 1. log likelihood is *not* an effect size. The difference between the log likelihood of the proposed model…"
Dec 24, 2012
Garett Howardson added a discussion to the group Calculating Effect Sizes and Their Variances
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Standardized Effect Size for Overall Model Fit in Structural Equation Modeling

Hi Everyone! I'm currently planning a project that I'd like get underway but it's still unclear to me whether or not it's even possible. Enter this group! I want to look at researcher decisions when using structural equation modeling (SEM). Specifically, I want to examine which decisions contribute to changes in overall model fit. I could simply look at reported chi square values but I'd like to roll this up into a meta-analytic framework. I am conceptualizing the overall model chi square as…See More
Dec 20, 2012
Garett Howardson joined Mike Cheung's group
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Meta-analytic structural equation modeling

A technique to synthesizing correlation/covariance matrices for the purpose of fitting structural equation models.
Dec 17, 2012
Garett Howardson joined Blair T. Johnson's group
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Calculating Effect Sizes and Their Variances

Tips and techniques to help meta-analysts calculate effect sizes and the variances that are needed for the purpose of analysis.See More
Dec 17, 2012
Garett Howardson replied to Garett Howardson's discussion Interaction between two moderators
"Thank you so much Blair! This is great information. I'm eager to jump in and read about the moving constant techique.   Thank you again.   Garett"
Nov 27, 2012
Blair T. Johnson replied to Garett Howardson's discussion Interaction between two moderators
"Yes, none of the textbooks currently out there explain how to do that. (Though they certainly imply it.) If all you want is the estimated effect size values at different levels of the two (or more) moderators, the simplest thing is simply to use the…"
Nov 20, 2012
Garett Howardson posted a discussion

Interaction between two moderators

I'm looking for resources on using meta-regression to estimate the interactive effects of two moderators on effect sizes. For example, I have coded for scale specificity, which I expect to explain heterogeneity in effect sizes. However, I'd expect this to account for more heterogeneity in later years rather than early years, so I'd expect time and specificity to interact to predict effect sizes. I came across a PowerPoint presentation by David Wilson saying that this is possible but he doesn't…See More
Nov 20, 2012
Garett Howardson is now a member of Meta-Analysis Resources
Nov 20, 2012

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