Josh de Leeuw

@joshdeleeuw.bsky.social

Cognitive Scientist at Vassar College. Currently working on open source tools for researchers. Creator and maintainer: https://www.jspsych.org

calling all researchers who collect data from humans 🧠🧪 we are running a very brief survey (<1 min) about jsPsych, the software ecosystem for browser-based data collection. if you use jsPsych, or if you collect data with any other software, please fill it out at tinyurl.com/jspsych-census!

I am writing on behalf of the leadership of jsPsych, the software ecosystem for browser-based data collection used in experiments and surveys from many labs worldwide.

It has been difficult for us to figure out how widespread jsPsych usage is, because the software is freely available online and we do not collect any information about downloads, users, experiments posted online, etc. While the software has been cited in thousands of articles, jsPsych usage is likely more widespread than those citations imply, because not every project using jsPsych leads to a citation, and because there are also often substantial delays between actual jsPsych usage and a publication. As such, we are conducting a very brief census of jsPsych users.

If you collect data from humans using jsPsych or any other type of software, we would appreciate your filling out a very brief survey (<1 min) at tinyurl.com/jspsych-census. This will help us to understand how many people, labs, and institutions are current or former users of jsPsych, information that will help support the long-term sustainability of the jsPsych ecosystem.

We would also appreciate it if you could circulate this message to your lab, your department listserv, and your collaborators, to help ensure that it reaches as many members of the research community as possible. The survey is being distributed by Josh de Leeuw, Melissa Kline Struhl, and myself. Please contact me (sam@auckland.ac.nz) off-list if you have any questions about it.

A few days at the @jspsych.org Summer Hackathon 2026 turned into jspsych-ado: adaptive Bayesian experimental design that runs in the browser along with any jspsych experiment. It adapts each what it presents on each trial to what it has learned from a participant's earlier responses:

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This confirms my suspicion that @briannosek.bsky.social is a pirate.

jack sparrow from pirates of the caribbean says " they just arrrrrrrrr "

ALT: jack sparrow from pirates of the caribbean says " they just arrrrrrrrr "

media.tenor.com

Society for the Improvement of Psychological Science (SIPS)@improvingpsych.org · 4mo ago

#SIPS2026 Online is approaching soon! Don't miss this exciting conference! Join us for stimulating roundtables, lightning talks, workshops, hackathons, and a special Keynote Talk by @briannosek.bsky.social from the @cos.io! Check out the schedule and register! 👉️ buff.ly/waKzEuQ

You can do this right now: Think of a person who wrote a paper you love, whose work influenced or helped you, or has made your professional life better. Search up their email address. Shoot them a quick email of thanks. It means so, so much. This is a rough time of year, share some joy.

Today from 5-6 ET / 2-3 PT, Becky Gilbert is going to host an open office hour for help with jsPsych. Becky is a software engineer for Children Helping Science. Did you know that you can now use jsPsych to build studies that run on CHS (formerly Lookit)?

Josh de Leeuw@joshdeleeuw.bsky.social · 10mo ago

We've just launched a Discord server for #jsPsych users to collaborate and get technical help. I'll be hosting office hours tomorrow from 10:30-11:30 AM EDT. Hop in with any questions! discord.gg/RCKWJ4qb3p

After a few days to fix some bugs, we will be holding another online Psych-DS tutorial on Wednesday, June 4, 12pm EDT. This is an informal workshop designed to help you convert a dataset to Psych-DS - BYO or find an open dataset at osf.io/mbvk4. Sign up here: docs.google.com/forms/d/e/1F...

Psych-DS Workshop signups!

Psych-DS is an open source data standard for representing datasets in the social/behavioral sciences. It is designed for use by individual researchers who are collecting data, preparing datasets for a...

docs.google.com

Melissa Kline Struhl@mekline.bsky.social · last yr.

The first post-release workshop/tutorial on implementing Psych-DS for your dataset is online at #SIPS2025 tomorrow! In case 12:30CET/6:30AM EDT/3:30AM PDT is not to your liking (or you're not registered for SIPS), I may do an encore in a North American timeslot next week, would people be interested?