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reinforcement learning (13)
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study critique (271)
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13 posts
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Mysteries Of AI Generalization

Scott discusses three recent papers showing surprising patterns in how AI misbehavior does and doesn't generalize across different contexts, from emergent misalignment spreading across domains to reward-hacking staying confined to graded tasks.

acx
Sep 23, 2026 2,863 words 366 likes 243 comments Listen · 20 min Read Read Opened Opened

The Beauty Of Settled Science

Scott argues the real distinction in psychology isn't between subfields but between settled science (like dopamine, brain localization, heritability) and breaking-news research, defending psychology's solid core against critics who conflate bad recent studies with the entire field.

acx
Aug 4, 2026 2,027 words 361 likes 269 comments Listen · 13 min Read Read Opened Opened

Why Worry About Incorrigible Claude?

Scott explains why AI systems resisting changes to their values is a serious concern for AI alignment, connecting recent evidence to long-standing predictions from alignment researchers.

acx
Dec 24, 2024 2,234 words 232 likes 297 comments Listen · 13 min Read Read Opened Opened

Can This AI Save Teenage Spy Alex Rider From A Terrible Fate?

Scott Alexander examines Redwood Research's attempt to create an AI that avoids generating violent content, using Alex Rider fanfiction as training data.

acx
Nov 28, 2022 5,221 words 107 likes 442 comments Listen · 39 min Read Read Opened Opened

ELK And The Problem Of Truthful AI

Scott Alexander examines the Eliciting Latent Knowledge (ELK) problem in AI alignment and various proposed solutions.

acx
Jul 26, 2022 6,490 words 114 likes 294 comments Listen · 42 min Read Read Opened Opened

Highlights From The Comments On Motivated Reasoning And Reinforcement Learning

Scott Alexander explores expert and reader comments on his post about motivated reasoning and reinforcement learning, discussing brain function, threat detection, and the implementation of complex behaviors.

acx
Feb 11, 2022 3,475 words 34 likes 72 comments Listen · 24 min Read Read Opened Opened

Motivated Reasoning As Mis-applied Reinforcement Learning

Scott analyzes motivated reasoning as misapplied reinforcement learning, explaining how it might arise from the brain's mixture of reinforceable and non-reinforceable architectures.

acx
Feb 1, 2022 729 words 133 likes 333 comments Listen · 7 min Read Read Opened Opened

Voluntary Behavior, Conscious Thoughts

Scott presents Skinner's definition of voluntary behavior as that which is transparent to reinforcement, then extends this framework to explain the perceived unity of consciousness and the feeling of a core 'self'.

lw
Jul 11, 2011 1,033 words 47 likes 21 comments Read Read Opened Opened

Wanting vs. Liking Revisited

Scott explains why 'wanting' and 'liking' diverge by examining reinforcement learning mechanisms like context-dependence, intermittent reinforcement, and hyperbolic discounting, concluding that this undermines the concept of stable preferences.

lw
Jul 9, 2011 1,231 words 67 likes 9 comments Read Read Opened Opened

Basics of Human Reinforcement

Scott explains how reinforcement learning concepts like secondary reinforcers, generalization, and social learning apply to human behavior, while acknowledging these mechanisms don't fully explain complex decisions like quitting smoking on medical advice.

lw
Jul 6, 2011 1,986 words 60 likes 10 comments Read Read Opened Opened

Basics of Animal Reinforcement

Scott explains the basics of classical and operant conditioning, focusing on B.F. Skinner's work with pigeons and different reinforcement schedules, ultimately connecting variable ratio reinforcement to slot machines and human behavior.

lw
Jul 5, 2011 1,130 words 74 likes 21 comments Read Read Opened Opened

Behaviorism: Beware Anthropomorphizing Humans

Scott defends behaviorism as a sophisticated methodological approach that avoided using mental phenomena as fundamental explanations, connecting it to reinforcement learning and the idea that minds are behavior-executors rather than utility-maximizers.

lw
Jul 4, 2011 1,118 words 91 likes 24 comments Read Read Opened Opened

Antagonizing Opioid Receptors for (Prevention of) Fun and Profit

Scott explains how the Sinclair Method treats alcoholism by using naltrexone to block the brain's reward response to alcohol, breaking the learned association between drinking and pleasure through temporal difference learning.

lw
May 5, 2010 1,281 words 57 likes 35 comments Read Read Opened Opened
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