[Mitarbeiter.zoologie] Statistical club meeting - SEM

[Antonella Soro]

Dear Lucie,

I thank you very much for this material and for your presentation, which was definitively useful in many respects. I understood things I did not understand before.

A couple of hours after your presentation, i have attended the weekly meeting with richard McElreath and asked him specifically about whether it is appropriate to use AIC criteria when running SEM and he reiterated that it is not (his words: “it is wrong”). 

even if less categorically Jon Lefcheck says the same thing:

“Users should take caution when exploring these techniques as to avoid dredging the model. SEM is a technique that relies heavily on informed model specification. Adding paths in that are suggested by the data but not anticipated by the user only in an effort to achieve adequate fit might be appropriate in other applications, but ignore the basic philosophy behind SEM that relationships are based on a priori knowledge and intuition” [italics is Lefcheck’s].

Thanks again and a good week-end to all,

Antonella






> On 2. Feb 2024, at 14:19, Lucie M. Baltz <lucie.baltz at zoologie.uni-halle.de> wrote:
> 
> Hey everyone,
>  
> attached it the Presentation and some Paper that might be usefull for you. In my opinion the one from Shipley and the one from Garrido are the most helpful ones.
>  
> If you want to use SEM, this link will be the most helpful! https://jslefche.github.io/sem_book/index.html
>  
> Best,
> Lucie
>  
> (she/her)
> PhD candidate
> General Zoology
> Martin-Luther-University Halle-Wittenberg
> Hoher Weg 8
> 06120 Halle (Saale)
> lucie.baltz at zoologie.uni-halle.de <mailto:lucie.baltz at zoologie.uni-halle.de>
>  
>  
> <10705511.2020.1871355.pdf><Ecology - 2013 - Shipley - The AIC model selection method applied to path analytic models compared using a d‐separation.pdf><Methods Ecol Evol - 2021 - Garrido - A model selection approach tostructural equation modelling  A critical evaluation and.pdf><nihms661496.pdf><qt490131xj.pdf><rohrer-et-al-2022-that-s-a-lot-to-process-pitfalls-of-popular-path-models.pdf><s11135-017-0469-8.pdf><Structural Equation Modelling.pptx>_______________________________________________
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