Scott Alexander conducts a personal randomized controlled trial of a sleep supplement, finding no significant effect over placebo, but gains insights into his sleep patterns. Longer summary

Scott Alexander conducts a personal randomized controlled trial to test the effectiveness of a sleep supplement called Sleep Support. Initially, he experiences a dramatic improvement in his sleep patterns, but decides to rigorously test this effect. He designs an experiment using placebo pills and blind administration over 24 nights. Surprisingly, the results show no significant difference between the Sleep Support and placebo nights in terms of sleep duration, wake-up time, or subjective measures. Scott concludes that his initial perceived improvement was likely due to the placebo effect and the act of not checking the clock upon waking. Despite the supplement not outperforming placebo, Scott considers the experiment a success as it led to improved sleep habits. Shorter summary