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CovfefeAnon's profile
Covfefe Anon
Covfefe Anon
Covfefe Anon
@CovfefeAnon

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Covfefe Anon

@CovfefeAnon

Not to be confused with 2001 Nobel Peace Prize winner Kofi Annan. 54th Clause of the Magna Carta absolutist. Commentary from an NRx perspective.

Joined July 2017

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    1. Yeyo‏ @RealYeyoZa 18 Jun 2019

      Another example of an Everest regression would be; "if you control for bone length, men aren't taller than women". It's a pretty common trick.

      10 replies 32 retweets 182 likes
      Show this thread
    2. Colin Wright‏ @SwipeWright 19 Jun 2019
      Replying to @RealYeyoZa

      *Controlling for sex, testosterone doesn't influence athletic performance.

      1 reply 1 retweet 14 likes
    3. Zack M. Davis‏ @zackmdavis 19 Jun 2019
      Replying to @SwipeWright @RealYeyoZa

      I doubt that one's true—I would guess that within-sex variation in testosterone influences performance, too. Visuospatial ability might be an interesting example (the "optimal" T level is above the female mean but below the male mean)

      1 reply 0 retweets 3 likes
    4. Covfefe Anon‏ @CovfefeAnon 8 Dec 2019
      Replying to @zackmdavis @SwipeWright @RealYeyoZa

      >Visuospatial ability might be an interesting example (the "optimal" T level is above the female mean but below the male mean) Definitely not - hitting a baseball is the purest visuospatial test in sports and it's massively enhanced by exogenous testosterone*

      2 replies 0 retweets 1 like
    5. Zack M. Davis‏ @zackmdavis 8 Dec 2019
      Replying to @CovfefeAnon @SwipeWright @RealYeyoZa

      "Definitely not"—overconfident much?! That would be an interesting speculation in the absence of better data, but people actually study this stuff! My source is Arthur Jensen, The g Factor, Ch. 13., who cites https://www.sciencedirect.com/science/article/pii/1041608095900055 … and https://www.sciencedirect.com/science/article/pii/1041608095900039 …pic.twitter.com/913YNOQ2LZ

      1 reply 0 retweets 0 likes
    6. Covfefe Anon‏ @CovfefeAnon 8 Dec 2019
      Replying to @zackmdavis @SwipeWright @RealYeyoZa

      Yes, optimal level of testosterone for the single most visuospatial weighted real world tested task is above that of a professional male athlete in peak condition and his performance improves greatly with testosterone supplementation. 1/2pic.twitter.com/qKzXIzpX3l

      1 reply 0 retweets 0 likes
    7. Covfefe Anon‏ @CovfefeAnon 8 Dec 2019
      Replying to @CovfefeAnon @zackmdavis and

      Somewhere below the first red line is when Bonds reacted to McGwire and Sosa eclipsing him (due to test supplementation) and joined in on it. This is better evidence than any possible study because all actors have skin in the game. No MLB hitter ever chose to suppress test 2/2

      2 replies 0 retweets 0 likes
    8. Zack M. Davis‏ @zackmdavis 8 Dec 2019
      Replying to @CovfefeAnon @SwipeWright @RealYeyoZa

      All baseball players have skin in the game of hitting baseballs, which we agree draws on some mental abilities (reaction time at the very least!). Not obvious that the thing Jensen means by "visuospatial" (which is what I meant in my Tweet about T) is a large component in hitting

      1 reply 0 retweets 0 likes
    9. Covfefe Anon‏ @CovfefeAnon 8 Dec 2019
      Replying to @zackmdavis @SwipeWright @RealYeyoZa

      It's an interesting question - what exactly is the mental trait involved in hitting a baseball? Needs reaction time, fast pattern recognition to recognize pitches, etc. Benefits from more T. Also seems to be a rare mental trait that doesn't show ability gaps between races.

      3 replies 0 retweets 0 likes
    10. Zack M. Davis‏ @zackmdavis 8 Dec 2019
      Replying to @CovfefeAnon @SwipeWright @RealYeyoZa

      You claimed that contact rates don't decrease with T supplementation, but do they increase? My null hypothesis here is that all the effect is from strength (swing bat faster, more likely to hit past fielders) and not mental effects

      1 reply 0 retweets 0 likes
      Covfefe Anon‏ @CovfefeAnon 9 Dec 2019
      Replying to @zackmdavis @SwipeWright @RealYeyoZa

      Just using Bonds and leaving off his not full season rookie year and the year where it's unknown when / how much he was using T (1999). Pre T - 7616 PA, 948 K - 12.45% Post T - 4072 PA, 437 K - 10.49% Hitting past fielders isn't really a factor in baseball - BABIP tracks this

      1:06 AM - 9 Dec 2019
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Covfefe Anon‏ @CovfefeAnon 9 Dec 2019
          Replying to @CovfefeAnon @zackmdavis and

          BABIP is a bit complicated but basically batted balls fall into four buckets: Line drives Fly balls Ground balls Pop ups The distribution of balls between buckets changes, but the distribution *within* buckets is consistent across hitters with normal variation.

          1 reply 0 retweets 0 likes
        3. Covfefe Anon‏ @CovfefeAnon 9 Dec 2019
          Replying to @CovfefeAnon @zackmdavis and

          Post 1999 Bonds made more contact and harder contact and also was pitched around - in 2001 he hit safely 156 times but 73 of those balls were out of the park entirely.

          1 reply 0 retweets 0 likes
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