Ethan Mollick Profile picture
Aug 11 4 tweets 3 min read
Hire good gamers! Video game performance can act as a “stealth test” of real skills:
🏙️Good Civilization players have better management skills
⌨️Performance in MOBAs like LoL correlates with IQ
⚔️Guild leaders in World of Warcraft are more likely to be good leaders in real life
Not to confirm anyone’s suspicions, but: 🎮Performance in FPSs like Battlefield 3, Destiny, etc. don't show the same correlation with intelligence.
You can also build IQ tests into games. Minecraft can function as valid IQ test that correlates well with pen-and-paper tests, as this paper shows.

Really interesting: some kids who do badly at traditional IQ tests do really well at the Minecraft version: doi.org/10.1016/j.chb.…
Other papers from the thread:
Civilization and management skills proof-of-concept study: link.springer.com/article/10.100…
MOBAs and fluid intelligence: journals.plos.org/plosone/articl…
Measuring intelligence through commercial games: doi.org/10.1016/j.inte…

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More from @emollick

Aug 7
One personality test to rule them all…

This paper finds that somewhere between 71% and 83% of all commonly used psychological scales are basically facets of the Big Five scale, many with extremely high correlations to the Big Five. Look at that chart! psyarxiv.com/vebtm
In case you aren’t familiar with the Big Five (or OCEAN test), it is the current gold standard for personality testing, assessing you on extraversion, agreeableness, conscientiousness, negative emotionality and openness to experience. You can take it here: projects.fivethirtyeight.com/personality-qu…
Incidentally, you can infer the Big Five from tastes. Two papers show the movies and books you like can be used to accurately predict Big 5 personality traits. Take a look at the lists! (& some examples in the thread)
Movies: psyarxiv.com/wsdu8/download…
Books: arxiv.org/ftp/arxiv/pape…
Read 6 tweets
Aug 4
No pressure, but dogs, horses, & goats have all been proven to be able to read your facial expressions. And they prefer it when you look happy 🐶🐐🐴

Cats also can read your expressions, but it isn't that clear that they care whether you are happy (they don’t like you angry) 🐱
Here are the papers. And a great diagram from methods (the dog needs a lab coat to really complete the scene).

Dogs: sciencedirect.com/science/articl…
Horses: royalsocietypublishing.org/doi/pdf/10.109…
Goats: royalsocietypublishing.org/doi/pdf/10.109…
So this is science, now.
Read 7 tweets
Aug 2
Three dangers of trying to learn lessons from ultra-successful people:

The first is survivorship bias. The press generally covers successes, not failures. We draw biased conclusions from only looking at winners, but not seeing the losers. It happens even when we know better! 1/3
Second is "superstitious learning,” where we learn the wrong things. When lessons aren’t clear, or the market is changing, people tend to copy visible aspects of successful folks (eg requiring memos before meetings, like Amazon does), but those are not the reason for success. 2/3
Third, even if you are getting accurate stories of why someone succeeded, we actually have trouble learning from successes. It is hard to apply the lessons from the stories of people who won to our own situation. Instead, we often learn more from stories of other’s failure! 3/3
Read 5 tweets
Aug 2
I created all the graphs in this viral thread within a day of first using MidJourney, a DALL-E-like AI image generation system.

I think the technology is transformative to how we relate to art and design. Everyone should try it. Here is a thread on how to, in under 10 minutes🧵
Setup is easy. You can create a a bunch of images for free on MidJourney, and anyone can get access here: midjourney.com

You use it by communicating with a bot, on Discord. Here is a guide to Discord: pcworld.com/article/540080…

Then all you need to do is type /imagine
Now, you can tell MidJourney what to do to improve the images (or try again).

The four images are numbered going clockwise from the upper left. To get a variation on one you like, select "V1" (or V2, V3, or V4), to get a high resolution copy, select "U1" (or U2, U3, or U4).
Read 5 tweets
Jul 27
Data visualization inspiration thanks to DALL-E: how Rothko, Basquiat, Picasso, and Monet would create an academic chart. ImageImageImageImage
A few more sources of data visualization inspiration: Bar charts as stained glass in an old cathedral. As a page from the Voynich Manuscript. As ancient stone monoliths on a grassy plain. Made of great columns of fire in the sky at the end of the world. cdn.discordapp.com/attachments/10… ImageImageImageImage
Bar charts made out of cake. In the style of Klimpt. As a Persian rug. Out of writhing tentacles. ImageImageImageImage
Read 13 tweets
Jul 26
In case humanity really messes up, you should know we learned a dangerous species of deep sea cannibal squid is talking with each other in a kind of language ("indicative of semanticity and discreteness") using the patterns & bioluminescence on their skin. pnas.org/doi/10.1073/pn…
On the other hand, we shouldn’t worry about the squid since humans are only alive because spiders choose to let us live.
🕷️One ton of spiders can eat a human in a day
🕷️The Earth has 29M tons of spiders
∴ spiders could eat 10.6 billion people a year
The world population is 8B
Spiders are scarier than Tyrannosaurus Rexes.

Just the spiders alive today could eat every every human ever born (113 billion) in less than a decade.

There were 20k 🦖 on Earth at any time. It would take the entire population of 🦖 2,825 years to eat every human who ever lived.
Read 7 tweets

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