Scott Alexander criticizes psychological studies that confuse short-term reactions with long-term effects, using examples from video game violence research, media stereotype studies, and parenting research. Longer summary

Scott Alexander critiques psychological studies that draw broad conclusions about long-term effects based on short-term reactions. He uses examples from video game violence research, studies on media stereotypes, and child-rearing practices to illustrate the 'streetlight effect' - where researchers focus on easily measurable short-term effects rather than more relevant long-term impacts. He argues that temporary changes in mood or behavior immediately after an intervention don't necessarily translate to lasting personality changes or real-world actions. The post calls for more skepticism in interpreting such studies and emphasizes the importance of distinguishing between immediate situational responses and genuine long-term effects. Shorter summary