Scott Alexander examines a study challenging ketamine's effectiveness as an antidepressant, discussing potential confounding factors and maintaining his belief in ketamine's utility despite the study's results. Longer summary

Scott Alexander discusses a recent study on ketamine's effectiveness as an antidepressant when administered during anesthesia. The study found no significant difference between ketamine and placebo groups, challenging previous beliefs about ketamine's antidepressant properties. Scott analyzes the study's methodology and results, pointing out several factors that might have influenced the outcomes, such as the strong placebo effect, the antidepressant properties of anesthetics, and the potential impact of surgery on depression symptoms. He concludes that while the study raises questions, it doesn't completely invalidate previous research showing ketamine's effectiveness, and he maintains his belief in ketamine's potential as an antidepressant for some patients. Shorter summary

Scott Alexander defends the concept of automaticity in psychology, arguing that core cognitive biases and priming effects are real, while acknowledging some claims have been overstated. Longer summary

Scott Alexander responds to a critique of automaticity in psychology, arguing that while some claims about cognitive biases and priming have been overstated, the core concepts are real and well-replicated. He provides examples of cognitive biases, priming effects, and nudges that have strong evidence behind them. Scott compares cognitive biases to optical illusions - real phenomena that affect our perception, but not in ways that make us completely helpless. He argues that automaticity is actually a very old idea about human nature, found in various philosophical and religious traditions. While we shouldn't see ourselves as completely controlled by unconscious forces, Scott suggests that accepting some level of automaticity in our cognition is both realistic and not necessarily problematic. Shorter summary

Scott Alexander shares 57 diverse links and brief commentaries on topics ranging from politics and psychology to technology and culture. Longer summary

Scott Alexander presents a collection of 57 interesting links and brief commentaries on various topics, including politics, psychology, technology, culture, and science. The post covers a wide range of subjects, from corporate takeovers and European stereotypes to psychedelic research and AI developments. It also includes discussions on mental health, education, and current events. Shorter summary

Scott reviews 'The Secret of Our Success' by Joseph Henrich, which argues that culture, not raw intelligence, is key to human success and explores the evolutionary basis for cultural transmission. Longer summary

Scott reviews Joseph Henrich's book 'The Secret of Our Success', which argues that culture, not raw intelligence, is the key to human success. The book explores how humans evolved to transmit culture with high fidelity, how cultural practices often contain hidden wisdom that individuals can't easily figure out on their own, and how reason can sometimes lead people astray from beneficial cultural traditions. Scott finds the book's arguments compelling and sees it as an important contribution to understanding the value of tradition. Shorter summary

The post examines cultural evolution, arguing that while within-culture evolution is effective, between-cultures evolution is too slow and weak to justify cultural practices like opposition to gay marriage. Longer summary

This post discusses the concept of cultural evolution, distinguishing between two types: within-culture and between-cultures evolution. The author argues that while within-culture evolution (like Inuit survival techniques) is obvious and effective, between-cultures evolution (like arguments against gay marriage) is much weaker and slower. The post challenges the idea that cultural practices persisting over time necessarily prove their value, pointing out that cultural changes often take centuries and that the advantages of specific cultural traits are hard to isolate. The author concludes that appeals to intercultural evolution to justify cultural practices are on shaky ground, and that intracultural evolution can't override people's own assessments of their happiness and well-being. Shorter summary

A links roundup covering topics from ISIS dating sites to space exploration, scientific studies, and cultural observations, featuring Scott's commentary and analysis on each item. Longer summary

This is a links post presenting various news and studies. It covers diverse topics including a dating site run by ISIS, space exploration news about Orion and SpaceX, studies about omega-3 fats and psychosis, Chinese censorship of puns, controversies around doxxing in Ferguson, research on glial cells and intelligence, poker tournament winners linked to effective altruism, and various other scientific studies and cultural observations. Shorter summary

Scott shares a collection of interesting links covering topics like folklore, scientific papers, geopolitics, and cultural curiosities. Longer summary

A collection of interesting links covering diverse topics, from folklore and scientific papers to geopolitics and popular culture. The post starts with a Scottish folklore creature and its likely scientific explanation, discusses scientific papers about p-hacking and NSA's effect on searches, covers some interesting historical and cultural facts about ancient civilizations, and ends with various curiosities including tech companies' headquarters and Google's robots files. Shorter summary