[R-meta] effect size similarities

[Viechtbauer, Wolfgang (SP)]

Dear Patrizio,

I don't know what exactly you mean by 'binomial z value', but Hedges' g is not a 'z score'. If that were the case, then g values would have a variance of 1, which is clearly not true.

Best,
Wolfgang

>-----Original Message-----
>From: R-sig-meta-analysis [mailto:r-sig-meta-analysis-bounces using r-project.org] On
>Behalf Of Patrizio E Tressoldi
>Sent: Tuesday, 22 June, 2021 15:32
>To: r-sig-meta-analysis using r-project.org
>Subject: [R-meta] effect size similarities
>
>Is it correct to say that a binomial z value (obtained from a k events
>out of n trials minus the chance probability) can be assimilated to an
>Hedges' g requiring no transformations for their comparison given that
>their are both z scores?
>
>Thanks
>
>Patrizio
>
>--
>Patrizio E. Tressoldi Ph.D.
>Science of Consciousness Research Group
>Studium Patavinum
>Università di Padova
>Padova - ITALY
>http://www.patriziotressoldi.it
>http://www.socrg.org
>https://orcid.org/0000-0002-6404-0058
>https://opensciences.org/about/manifesto-for-a-post-materialist-science