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russpoldrack's profile
Russ Poldrack
Russ Poldrack
Russ Poldrack
Verified account
@russpoldrack

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Russ PoldrackVerified account

@russpoldrack

Professor of Psychology at Stanford. Director of the Stanford Center for Reproducible Neuroscience

San Francisco, CA
russpoldrack.org
Joined October 2009

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    Russ Poldrack‏Verified account @russpoldrack 20 Nov 2018

    My new open undergraduate statistics textbook is now available at http://thinkstats.org/  - more context at http://www.russpoldrack.org/2018/11/statistical-thinking-for-21st-century.html …

    10:11 AM - 20 Nov 2018
    • 787 Retweets
    • 1,911 Likes
    • Batool Rizvi Nico Franzmeier Lorenzo Desideri Lucy Whitmore Michael J. Ward Don Young Juan Ramos-Cejudo, PhD #NoDAPL P(A|B)  🙇🏾‍♂️ Shlomo Engelson Argamon
    48 replies 787 retweets 1,911 likes
      1. Russ Poldrack‏Verified account @russpoldrack 7 Dec 2018

        for those of you who asked about licensing - the book is now licensed under CC-BY-NC. I don't love the NC but it's necessary for a commercial publisher to consider printing a hardcopy version.

        0 replies 3 retweets 3 likes
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      1. New conversation
      2. Benedikt Ehinger‏ @BenediktEhinger 20 Nov 2018
        Replying to @russpoldrack

        I love this! While brushing over it I noticed the regression to the mean subsection feels missplaced. You write General Linear Model but restrict yourself to the linear model - also did you mean generalized linear model? Fig. 15.4 is likely missing aes(group(subject))

        2 replies 0 retweets 1 like
      3. Russ Poldrack‏Verified account @russpoldrack 20 Nov 2018
        Replying to @BenediktEhinger

        for this course I'm sticking to simple general linear model. perhaps one day there will be an advanced version that also covers generalized linear models...

        1 reply 0 retweets 3 likes
      4. Benedikt Ehinger‏ @BenediktEhinger 20 Nov 2018
        Replying to @russpoldrack

        That makes a lot of sense about the generalized model. But I'm probably missing something, I thought the general linear model is the multivariate version (multiple dependent variables) of the linear model?

        1 reply 0 retweets 0 likes
      5. Russ Poldrack‏Verified account @russpoldrack 20 Nov 2018
        Replying to @BenediktEhinger

        in my head (and this is the way the concept is used in the neuroimaging literature) a general linear model is Y = X*B + E where Y is a Nx1 vector and X is a NxJ design matrix with J regressors. so univariate.

        1 reply 0 retweets 2 likes
      6. Benedikt Ehinger‏ @BenediktEhinger 20 Nov 2018
        Replying to @russpoldrack

        Ok now I understand. According to Wikipedia glm is the multivariate case, and we usually have multiple voxels/electrodes so multivariate, which are then tested univariatly. I think massive univariate linear model would be the way better name to not confuse with true multivariate

        1 reply 0 retweets 1 like
      7. Benedikt Ehinger‏ @BenediktEhinger 20 Nov 2018
        Replying to @BenediktEhinger @russpoldrack

        At some point I tried finding ""true" general linear model analyses and everyone confused everything (i.e. with generalized) and multivariate is confused with multiple - what a definition mess :(

        0 replies 0 retweets 1 like
      8. End of conversation
      1. New conversation
      2. Andrej Warkentin‏ @awakenting 20 Nov 2018
        Replying to @russpoldrack

        Hey, thanks for making this book! I have a suggestion for the suggested reading in the DataVisualization chapter which is this free online book: https://serialmentor.com/dataviz/ . Also, a minor note: Chapter 18 is not showing the references but they are shown in the next chapter.

        1 reply 1 retweet 8 likes
      3. Russ Poldrack‏Verified account @russpoldrack 20 Nov 2018
        Replying to @awakenting

        thanks! yes, that's some funkyness that I needed to make the latex version compile properly. will try to fix it soon.

        0 replies 0 retweets 1 like
      4. End of conversation
      1. New conversation
      2. Mark Baxter  🐵 🏳️‍🌈‏ @markgbaxter 20 Nov 2018
        Replying to @russpoldrack

        Russ, this looks amazing. Can't wait to use it as a resource for my data analysis class this spring.

        1 reply 0 retweets 4 likes
      3. Russ Poldrack‏Verified account @russpoldrack 20 Nov 2018
        Replying to @markgbaxter

        great! please send along any suggestions/corrections you come up with

        0 replies 0 retweets 3 likes
      4. End of conversation
      1. New conversation
      2. Paul Sharp‏ @psharp1289 21 Nov 2018
        Replying to @russpoldrack

        Thanks so much for this! Love to see the disdain for NHST and shout-out to @lakens course on improving statistical inferences. Was surprised to see Meehl not mentioned. IMO philosophy of science needs to accompany early statistics training.

        1 reply 0 retweets 1 like
      3. Russ Poldrack‏Verified account @russpoldrack 21 Nov 2018
        Replying to @psharp1289 @lakens

        thanks! yeah, would be great to work Meehl into the mix.

        0 replies 0 retweets 2 likes
      4. End of conversation
      1. New conversation
      2. Manon Ironside‏ @ManonIronside 21 Nov 2018
        Replying to @russpoldrack

        This looks great, I love all the R examples. On Figure 2.1, the "valid but not reliable" example seems misleading, since lack of reliability precludes validity (always, right?). That said, the targets example is very clear and I have used it before myself.

        1 reply 0 retweets 1 like
      3. Russ Poldrack‏Verified account @russpoldrack 21 Nov 2018
        Replying to @ManonIronside

        well, one can in principle have a measure that is valid but not reliable in the test/retest sense, because there is too little between-subject variability - see https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5990556/ … - but that's probably too deep in the weeds for this book!

        0 replies 0 retweets 2 likes
      4. End of conversation
      1. New conversation
      2. Ed Hollox‏ @edhollox 21 Nov 2018
        Replying to @russpoldrack

        This looks great. Would you consider giving it a clear creative commons licence so it can be used elsewhere? Apologies if I missed it. https://creativecommons.org/licenses/ 

        1 reply 0 retweets 1 like
      3. Russ Poldrack‏Verified account @russpoldrack 21 Nov 2018
        Replying to @edhollox

        I will be assigning a license soon, once I figure out how it interacts with potential publication of a hard copy version

        0 replies 0 retweets 1 like
      4. End of conversation
      1. New conversation
      2. Dr. Taylor Hanayik‏ @thanayik 20 Nov 2018
        Replying to @russpoldrack

        What service/framework did you use for the online styling and pdf generation? Looks great and I'd love to use the same simple format for a few ideas I've had over the years. Thanks for the neat and OPEN resource!

        1 reply 0 retweets 0 likes
      3. Russ Poldrack‏Verified account @russpoldrack 20 Nov 2018
        Replying to @thanayik

        I wrote it in RMarkdown using Bookdown https://bookdown.org/yihui/bookdown/html.html#gitbook-style … and @rstudio

        0 replies 0 retweets 4 likes
      4. End of conversation
      1. New conversation
      2. Jeanette Mumford‏ @mumbrainstats 20 Nov 2018
        Replying to @russpoldrack

        I'm still working on reading it and writing comments....not sure how quickly I'll get to it :)

        1 reply 0 retweets 2 likes
      3. Russ Poldrack‏Verified account @russpoldrack 20 Nov 2018
        Replying to @mumbrainstats

        thanks! the version that I just posted has lots of changes since the earlier draft I sent you.

        0 replies 0 retweets 0 likes
      4. End of conversation

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