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Dr Mircea Zloteanu ☀️ 🌊🌴<a href="https://mastodon.social/tags/statstab" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#statstab</a> #345 Best practices for your confirmatory factor analysis: A JASP and lavaan tutorialThoughts: Don't want to install <a href="https://mastodon.social/tags/R" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#R</a> but still want to do SEM/CFA with {lavaan}, <a href="https://fosstodon.org/@JASPStats" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@JASPStats</a> is your friend!<a href="https://mastodon.social/tags/CFA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CFA</a> <a href="https://mastodon.social/tags/FactorAnalysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FactorAnalysis</a> <a href="https://mastodon.social/tags/SEM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SEM</a> <a href="https://mastodon.social/tags/tutorial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tutorial</a> <a href="https://mastodon.social/tags/EFA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#EFA</a> <a href="https://mastodon.social/tags/JASP" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#JASP</a><a href="https://rdcu.be/eme1V" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://rdcu.be/eme1V</a>

Nick Byrd, Ph.D.An adversarial collaboration reports that mathematical reflection tests assess <a href="https://nerdculture.de/tags/math" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#math</a> ability about as much as anything else. 😬And what is the evidence that the paper's “independent” measure of reflection actually measured reflection? 🧐<a href="https://doi.org/10.1073/pnas.2409191121" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://doi.org/10.1073/pnas.2409191121</a><a href="https://nerdculture.de/tags/psychometrics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#psychometrics</a> <a href="https://nerdculture.de/tags/psychology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#psychology</a> <a href="https://nerdculture.de/tags/cogPsych" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cogPsych</a> <a href="https://nerdculture.de/tags/JDM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#JDM</a> <a href="https://nerdculture.de/tags/decisionScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#decisionScience</a> <a href="https://nerdculture.de/tags/economics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#economics</a> <a href="https://nerdculture.de/tags/factorAnalysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#factorAnalysis</a> <a href="https://nerdculture.de/tags/stats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#stats</a> <a href="https://nerdculture.de/tags/rStats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rStats</a>

guyjantic has moved!TL;DR: It's not a psychometric scale and it's not weeblyThis "Weebly racism scale" has been posted a couple of times on the Fediverse, and I finally decided to look it up. It seems like a multidimensional construct reduced to one dimension, so I wanted to see the items, hopefully an exploratory <a href="https://c.im/tags/FactorAnalysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FactorAnalysis</a>, evidence of <a href="https://c.im/tags/reliability" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#reliability</a> and (dare I hope?) <a href="https://c.im/tags/validity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#validity</a>.Yeah, no. It's not a scale at all, in the psychometric sense. No data collection or <a href="https://c.im/tags/analysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#analysis</a> (AFAICT) was part of this, so there is no (and, at this point, can be no) validity information. This is one person's ideas about racism. This is absolutely the kind of thought work that should be done when one is at the very beginning of scale creation, but it's not a scale like that.The scale is hosted on weebly dot com, a web host kind of like squarespace. The fact that hundreds (or thousands) of other people resonate with this scale is a good sign for potential validity. However, that is not sufficient psychometric evidence to call this a "racism scale" alongside things like the Modern Racism Scale, etc.This seems like a useful activity to get you thinking about your experiences with racism (on either side of that line), but because it's not a psychometric scale, there's no *scientific* reason to believe* The implied or explicit categories map onto actual racist thinking/behavior patterns* The order of the categories is valid--e.g., there's no evidence "I'm not racist but..." is more racist than "'Funny' Black Face", etc.* The categories even belong on the same continuumAs I said above, it really feels like a decent start, but with several dimensions squashed into one. I'd personally love to see a racism researcher use this to develop an actual scale, or try to. I suspect the result would be something vaguely resembling this scale but with significant differences.<a href="https://c.im/tags/psychometrics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#psychometrics</a> <a href="https://c.im/tags/psychology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#psychology</a> <a href="https://c.im/tags/racism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#racism</a> <a href="https://c.im/tags/prejudice" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#prejudice</a> <a href="https://c.im/tags/scale" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#scale</a> <a href="https://c.im/tags/discrimination" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#discrimination</a> <a href="https://c.im/tags/scaleconstruction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#scaleconstruction</a> *

Dr. Leonie VogelsmeierOur new article on evaluating (qualitative changes in) emotional granularity/differentiation in <a href="https://fediscience.org/tags/ESM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ESM</a> data led by Marcel Schmitt has now been published in MBR :-) <a href="https://www.tandfonline.com/doi/full/10.1080/00273171.2024.2328381" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.tandfonline.com/doi/full/10.1080/00273171.2024.2328381</a> <a href="https://fediscience.org/tags/measurement" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#measurement</a> <a href="https://fediscience.org/tags/psychometrics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#psychometrics</a> <a href="https://fediscience.org/tags/factoranalysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#factoranalysis</a> <a href="https://fediscience.org/tags/affect" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#affect</a>

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