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digs
Permanent link - Posted 18 hours ago (via andrewgelman.com)
Gabriel Power writes: I don’t recall that you addressed this point in your posts on post-publication peer review [for example, here and here — ed.]. Who would be allowed to post reviews of a paper? Anyone? Only researchers? Only experts? Science is not a democracy. A study is not valid because a majority of people […] The post Post-publication peer review: who’s qualified?...
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digs
Permanent link - Posted 18 hours ago (via andrewgelman.com)
Back in 2013, I wrote a post regarding a controversial claim that high genetic diversity, or low genetic diversity, is bad for the economy: Two economics professors, Quamrul Ashraf and Oded Galor, wrote a paper, “The Out of Africa Hypothesis, Human Genetic Diversity, and Comparative Economic Development,” that is scheduled to appear in the American […] The post A couple more papers on ge...
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digs
Permanent link - Posted 18 hours ago (via andrewgelman.com)
Roland Langrock writes: Since on your blog you’ve regularly been discussing hot hand literature – which we closely followed – I’m writing to share with you a new working paper we wrote on a potential hot hand pattern in professional darts. We use state-space models in which a continuous-valued latent “hotness” variable, modeled as an […] The post The hot hand̵...
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digs
Permanent link - Posted 18 hours ago (via andrewgelman.com)
This post is by Phil, not Andrew. Over the couple of months I have seen quite a few people celebrating the long-awaited launch of a big device that will remove plastic garbage from the Pacific ocean. I find this frustrating because this project makes no sense even if the device works as intended: at best […] The post Why, oh why, do so many people embrace the Pacific Garbage Cleanup nonsense...
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digs
Permanent link - Posted 18 hours ago (via andrewgelman.com)
Matthew Poes writes: I’m writing a research memo discussing the importance of precisely aligning the outcome measures to the intervention activities. I’m making the point that an evaluation of the outcomes for a given intervention may net null results for many reasons, one of which could simply be that you are looking in the wrong […] The post What to do when your measured outcome doesn&...
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digs
Permanent link - Posted 18 hours ago (via andrewgelman.com)
[image of cat lifting weights] A graduate student who wishes to remain anonymous writes: I was wondering if you could answer an elementary question which came to mind after reading your article with Carlin on retrospective power analysis. Consider the field of exercise science, and in particular studies on people who lift weights. (I sometimes […] The post Multilevel data collection and anal...
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digs
Permanent link - Posted 18 hours ago (via andrewgelman.com)
Under the heading, “An example of Stan to the rescue, multiverse analysis, and psychologists trying to do well,” Greg Cox writes: I’m currently a postdoc at Syracuse University studying how human memory works. I wanted to forward a paper of ours [“Information and Processes Underlying Semantic and Episodic Memory Across Tasks, Items, and Individuals,” by […] The ...
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digs
Permanent link - Posted 7 days ago (via andrewgelman.com)
In an email with subject line, “Article full of forking paths,” John Williams writes: I thought you might be interested in this article by John Sabo et al., which was the cover article for the Dec. 8 issue of Science. The article is dumb in various ways, some of which are described in the technical […] The post High-profile statistical errors occur in the physical sciences too, i...
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digs
Permanent link - Posted 7 days ago (via andrewgelman.com)
This is a great idea! Unfortunately, only students at Columbia can submit. I encourage other institutions to do such contests too. We did something similar at Columbia, maybe 10 or 15 years ago? It went well, we just didn’t have the energy to do it again every year, as we’d initially planned. So I’m very […] The post Columbia Data Science Institute art contest appeared firs...
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digs
Permanent link - Posted 8 days ago (via andrewgelman.com)
The story starts as follows: There’s evidence for greater variability in the distribution of men, compared to women, in various domains. Two math professors, Theodore Hill and Sergei Tabachnikov, wrote an article exploring a mathematical model for the evolution of this difference in variation, and send the article to the Mathematical Intelligencer, a magazine that […] The post Echo Cha...
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