Abstract
<p>Behavioral scientists make claims about humans, but most research relies on English-speaking Americans. Despite longstanding concerns about this narrow sampling, only limited progress has been made to address it. We evaluated Chinese online participant pools, a potentially valuable resource given China’s large population, global influence, and frequent comparison with Western societies. Across 16 preregistered studies covering 21 established phenomena from behavioral and cultural sciences, we collected data from 24,932 Chinese and American participants. Chinese online platforms produced data broadly comparable to established American platforms. Participants were geographically and demographically diverse, attentive, and showed high test–retest reliability and temporal stability. Psychological and cultural effects were robust to variation in translation and translator backgrounds. We also provide practical insights and guidance for researchers using Chinese online platforms. This work helps reduce logistical barriers to extending behavioral research beyond traditionally studied WEIRD populations.</p>