Lucas Castillo

Lucas Castillo

@lcastillo.bsky.social

Research Fellow at Dept. Psychology Uni Warwick | (he/his) | https://www.lucascastillo.net/

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Lucas Castillo
@lcastillo.bsky.social

๐ŸŽ‰ New paper at Behavior Research Methods!!! We present the samplr package for R, which helps use sampling algorithms and cognitive models for human data - show theoretical background + examples. Thanks to @yunxiao-li.bsky.social and @asanborn.bsky.social. Paper link.springer.com/article/10.3...

link.springer.comThe samplr package: A tool for modeling human cognition with sampling algorithms - Behavior Research MethodsMany models of cognition have sampling as a central component. Researchers have used them to explain human performance across a wide range of tasks involving perception, probability reasoning, and cho...

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Communications Psychology
@commspsychol.nature.com

www.nature.com/articles/s44... New research Article by Jake Spicer, @yunxiao-li.bsky.social @lcastillo.bsky.social Johanna K. Falbรฉn, C. Stella Qian (้’ฑ็จ‹) & @asanborn.bsky.social in the journal (in Press)

nature.comGenerated outcomes in risky choice reveal biased sampling and sequential dependencies - Communications PsychologyThis study examined what information people may consider before a choice by asking them to repeatedly generate its possible outcomes. Participants overgenerated rare events and avoided direct repetiti...

Lucas Castillo reposted

Cognition
@cognitionjournal.bsky.social

"Random generation is what comes to mind in naturalistic settings" ๐Ÿ“ขNew paper from: Lucas Castillo (lcastillo.bsky.social), Pablo Leรณn-Villagrรก (pleonv.bsky.social), Johanna Falbรฉn, Nick Chater, & Adam Sanborn (asanborn.bsky.social) www.sciencedirect.com/science/arti...

sciencedirect.comRandom generation is what comes to mind in naturalistic settingsBeing unpredictable is useful for creativity, exploration, and good decision-making. Decades of research asking people to generate random sequences ofโ€ฆ

Lucas Castillo reposted

Warwick Psychology
@warwickpsych.bsky.social

Welcome back to Dr Lucas Castillo, who is starting an ESRC-funded postdoc with Prof. Adam Sanborn using statistical sampling algorithms as standard models of human perceptual and cognitive behaviour. Lucas recently gained his PhD in the department exploring why people are not able to act randomly.

Lucas Castillo reposted

Barbara Oberbauer
@barbaraoberbauer.bsky.social

Excited to share joint work with Ulf Hahnel and @sgluth.bsky.social on investigating how attribute translations - a widely implemented behavior intervention - lead to more ecological consumer choices. Main results are below, but check out our preprint ๐Ÿ‘‡ www.researchsquare.com/article/rs-7...

researchsquare.comComputational Mechanisms of Attribute TranslationsAttribute translations, a choice architecture intervention technique aiming to promote behavior change by translating decision-relevant information into more comprehensible and meaningful units for la...
Lucas Castillo
@lcastillo.bsky.social

New Preprint Out! ๐Ÿš€๐Ÿš€ Can people generate a random sequence if given enough time? Keep reading if - You make cognitive models with randomness in them - You like to explore the world, be creative, choose well - You want protection from clever agents exploiting patterns in your behavior. osf.io/awg9j

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Lucas Castillo
@lcastillo.bsky.social

If you use randomness in cognitive models: if you were using it as a catch-all for unexplained variance then keep at it, but if your model postulates that people use random draws then consider the time frame used and if lower than 2s consider autocorrelated noise instead. (7/8)

Lucas Castillo
@lcastillo.bsky.social

New Preprint Out! ๐Ÿš€๐Ÿš€ Can people generate a random sequence if given enough time? Keep reading if - You make cognitive models with randomness in them - You like to explore the world, be creative, choose well - You want protection from clever agents exploiting patterns in your behavior. osf.io/awg9j

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Lucas Castillo
@lcastillo.bsky.social

We found people's sequences are random if 2-4s elapse between items! ๐Ÿคฏ๐Ÿคฏ In the experiment we ran we asked people to do the task at two different speeds and so we could test whether it's time that matters (as in the weather) or number of items (as in card shuffles). The answer: time โŒ›โŒ›โŒ›(5/8)

Lucas Castillo
@lcastillo.bsky.social

If you like to be creative, explore the world, make good choices, be protected from agents exploiting patterns in your behavior: this is good news! We now know that the strategy of behaving randomly is available to humans and doesn't need much time, which is useful in all these domains. (6/8)

Lucas Castillo
@lcastillo.bsky.social

New Preprint Out! ๐Ÿš€๐Ÿš€ Can people generate a random sequence if given enough time? Keep reading if - You make cognitive models with randomness in them - You like to explore the world, be creative, choose well - You want protection from clever agents exploiting patterns in your behavior. osf.io/awg9j

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Lucas Castillo
@lcastillo.bsky.social

We thought: actual random stuff isn't random instantaneously (the weather is unpredictable some time from now; a deck of cards needs a few shuffles). Maybe we haven't given people enough time? (3/8)

Lucas Castillo
@lcastillo.bsky.social

We analysed previous data from experiments asking people to generate sequences at random, and did our own experiment: we looked at altered versions of the sequences where we skipped some items (thinned sequences). This way we could evaluate sequences at different delays between items. (4/8)

Lucas Castillo
@lcastillo.bsky.social

New Preprint Out! ๐Ÿš€๐Ÿš€ Can people generate a random sequence if given enough time? Keep reading if - You make cognitive models with randomness in them - You like to explore the world, be creative, choose well - You want protection from clever agents exploiting patterns in your behavior. osf.io/awg9j

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Lucas Castillo
@lcastillo.bsky.social

Being able to generate randomness would be quite useful (to avoid others taking advantage of patterns in your behavior, to be creative, to explore your environment...) -- BUT! Research on human random generation says people cannot do this (2/8)

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