David Lockhart

Statistician. Gamer. Multi-purpose geek.
thinking about thinking
learning about learning
talking about talking

[David Lockhart @avicenna]

@caltamura3 @instrumenthull I like Long + Ervin (2000) Using heteroskedastic consistent estimators in linear regression
https://t.co/RHHVfaVtwt

[Dave Richeson @divbyzero]

Here's a technique I just learned for creating random-feeling bijective functions between finite sets of the same size—like for assigning tasks to people. I will use it the next time I have to randomly assign students to groups.
• Put the names of students along the top in

[Michael Friendly @datavisfriendly.bsky.social @datavisFriendly]

An antidote for: If you've got too many people coming to your door, saying, "A quick stats question; it'll only take a minute" ...

[Jay Cummings @LongFormMath]

In case you ever wonder what REALLY goes on at bachelor parties…

[David Lockhart @avicenna]

@lathropa It is not my area but I was taught that parents cannot correctly classify recorded cries of their child (gold standard is what action calmed the crying) and that parents typically use context cues (eg long time since feeding, probably hungry) not info in the actual cries

[Health Psychology Review @healthpsychrev]

📢New article alert!📢

Have a look at this impressive scoping review by @louisepoppe_ et al on how to develop causal DAGs within health psychology research, including valuable guidance and recommendations on creating DAGs!

Read the full article here: https://t.co/QORe73Cen9

[Vince Buffalo @vsbuffalo]

Step aside Monty Hall, Blackwell’s N=2 case for the secretary problem is way weirder.

[Experimental Philosophy @xphilosopher]

Experimental studies keep giving us
more and more evidence against the theory that people have two concepts of causation (dependence vs. production)

This is a nice window into how recent work in cognitive science of causal judgment is going beyond previous approaches

A thread

[Almost Sure @Almost_Sure]

everybody asks *what* is probability.
Nobody asks *how* is probability

[Arthur Spirling @arthur_spirling]

Don’t want to be that guy but this is technically a “causes of effects” question and thus the relevant ATE is not well defined

[David Lockhart @avicenna]

😳

[Robert Talisse @RobertTalisse]

Periodc reminder: Avicenna and Duns Scotus aren't playing

[David Lockhart @avicenna]

@RandVegan You might find the zoo package helpful

[Ashley Fitzgerald @RizomaSchool]

I just discovered something called accidental baroque which are photographs that feel like baroque paintings.

I love this as a genre so much. Send me your accidental baroques.

[Massimo @Rainmaker1973]

#Today in 1982, in a posting made to a Carnegie Mellon bulletin board, Professor Scott Fahlman proposes the first known use of emoticons

While they became famous in 1980s & beyond, their origin remained unknown until 2002, when the original message was retrieved from backup tape

[Peyman Milanfar @docmilanfar]

“when a measure becomes a target, it ceases to be a good measure”

[David Lockhart @avicenna]

@IsabellaGhement @ChelseaParlett Thanks for the explanation. I agree with a lot of it, but to paraphrase Bill James "the alternative to good CI is bad CI not no CI". It is hard to do right but CI theories clarify how to tell the good from the bad. But there's no magic wand that tada makes a param causal.

[David Lockhart @avicenna]

@IsabellaGhement @ChelseaParlett Could you say more about that, Isabella?

[David Lockhart @avicenna]

@colin_fraser It just like me fr

[Dr Ellie Murray, ScD @EpiEllie]

Do you want to use causal graphs to improve your research but never know where to start?

In a series of papers, we used the same data and research question—one where we are pretty darn sure we know the real causal effect is that there isn’t one—to compare graph drawing methods.