@KatyMontgomerie @ElPolloDiabloX @AbigailShrier @chadfelixg Okay, so you haven't read the study in the British Journal of Sports Medicine, you've read a Guardian story about it.

I have now read the study, and I teach critical appraisal as part of my job, so let's dive into it a bit.

@br0oklynzo0 @KatyMontgomerie @ElPolloDiabloX @AbigailShrier @chadfelixg First things first, the sample size in this study is tiny. 46 people. Plus, the point of comparison was "all women and men under the age of 30 in the Air Force between 2004 and 2014" rather than a longitudinal group.
@br0oklynzo0 @KatyMontgomerie @ElPolloDiabloX @AbigailShrier @chadfelixg So no matching for age, background, or physical condition. The result of these is that you're going to get a lot of statistical artefacts.
@br0oklynzo0 @KatyMontgomerie @ElPolloDiabloX @AbigailShrier @chadfelixg Second of all, there were three points of comparison here and you're ignoring two of them. The researchers measured for push-ups and sit-ups as well, both of which showed physical advantage removed entirely by hormones. Which means you're cherrypicking.
@br0oklynzo0 @KatyMontgomerie @ElPolloDiabloX @AbigailShrier @chadfelixg So what do you get when you have a tiny sample size and cherrypicked results? That's right, you get noise in the data. Take a look at the results graph from this paper you haven't read.
@br0oklynzo0 @KatyMontgomerie @ElPolloDiabloX @AbigailShrier @chadfelixg You'll notice in the times for the 1.5 minute mile that the mean times go pretransition 708, 0-1 years 758, 1-2 years 791, 2-2.5 years 765. So the data seems to think that trans people get... faster after two years? What?
@br0oklynzo0 @KatyMontgomerie @ElPolloDiabloX @AbigailShrier @chadfelixg And why does the 2-2.5 years category exist? Why not 2-3? Or for that matter why include over 2 years at all, especially when it contains this odd anomalous reading?
@br0oklynzo0 @KatyMontgomerie @ElPolloDiabloX @AbigailShrier @chadfelixg What's also notable is that there is clearly an outlier in the 2.5 year readings. In the range for the 1.5 minute mile, the fastest time goes from 753s in the 1-2 years category to 685s in the 2-2.5 year category. That's an anomaly, and one the paper never mentions.
@br0oklynzo0 @KatyMontgomerie @ElPolloDiabloX @AbigailShrier @chadfelixg Had I been conducting this study, that anomaly would have been enough for me to question my data. if I'm being charitable I'd say that perhaps they didn't notice. If I'm not being charitable I'd say perhaps the anomaly was the point.
@br0oklynzo0 @KatyMontgomerie @ElPolloDiabloX @AbigailShrier @chadfelixg In summary, nothing here is strong enough to base very much on.
@br0oklynzo0 @KatyMontgomerie @ElPolloDiabloX @AbigailShrier @chadfelixg incidentally, MLA citation:

Roberts, Timothy A., Joshua Smalley, and Dale Ahrendt. "Effect of gender affirming hormones on athletic performance in transwomen and transmen: implications for sporting organisations and legislators." British Journal of Sports Medicine (2020).

More from Health

Before we get too far into 2021, I thought I’d write a thread recapping some of the research that came out of my lab in 2020. Most of this work was led by my talented team of graduate students, Kerrianne Morrison, @kmdebrabander, and @DesiRJones.

Back in January, a news story was published about Kerrianne’s study showing improved social interaction outcomes for autistic adults when paired with another autistic partner.

A detailed thread about the study and a link to the paper can be found here (feel free to DM me your email address if you’d like a copy of the full paper for this study or any of our studies):


Another paper published early in 2020 (it appeared a few months earlier online) showed that traditional standalone tasks of social cognition are less predictive of functional and social skills among autistic adults than commonly assumed in autism research.


Next, @kmdebrabander led and published an innovative study about how well autistic and non-autistic adults can predict their own cognitive and social cognitive performance.

You May Also Like

दधीचि ऋषि को मनाही थी कि वह अश्विनी कुमारों को किसी भी अवस्था में ब्रह्मविद्या का उपदेश नहीं दें। ये आदेश देवराज इन्द्र का था।वह नहीं चाहते थे कि उनके सिंहासन को प्रत्यक्ष या परोक्ष रुप से कोई भी खतरा हो।मगर जब अश्विनी कुमारों ने सहृदय प्रार्थना की तो महर्षि सहर्ष मान गए।


और उन्होनें ब्रह्मविद्या का ज्ञान अश्विनि कुमारों को दे दिया। गुप्तचरों के माध्यम से जब खबर इन्द्रदेव तक पहुंची तो वे क्रोध में खड़ग ले कर गए और महर्षि दधीचि का सर धड़ से अलग कर दिया।मगर अश्विनी कुमार भी कहां चुप बैठने वाले थे।उन्होने तुरंत एक अश्व का सिर महर्षि के धड़ पे...


...प्रत्यारोपित कर उन्हें जीवित रख लिया।उस दिन के पश्चात महर्षि दधीचि अश्वशिरा भी कहलाए जाने लगे।अब आगे सुनिये की किस प्रकार महर्षि दधीचि का सर काटने वाले इन्द्र कैसे अपनी रक्षा हेतु उनके आगे गिड़गिड़ाए ।

एक बार देवराज इन्द्र अपनी सभा में बैठे थे, तो उन्हे खुद पर अभिमान हो आया।


वे सोचने लगे कि हम तीनों लोकों के स्वामी हैं। ब्राह्मण हमें यज्ञ में आहुति देते हैं और हमारी उपासना करते हैं। फिर हम सामान्य ब्राह्मण बृहस्पति से क्यों डरते हैं ?उनके आने पर क्यों खड़े हो जाते हैं?वे तो हमारी जीविका से पलते हैं। देवर्षि बृहस्पति देवताओं के गुरु थे।

अभिमान के कारण ऋषि बृहस्पति के पधारने पर न तो इन्द्र ही खड़े हुए और न ही अन्य देवों को खड़े होने दिया।देवगुरु बृहस्पति इन्द्र का ये कठोर दुर्व्यवहार देख कर चुप चाप वहां से लौट गए।कुछ देर पश्चात जब देवराज का मद उतरा तो उन्हे अपनी गलती का एहसास हुआ।