The "replication crisis" has led to a call for initiatives to increase the replicability of psychological science, such as data and code sharing, pre-registration, registered reports, and reproducible workflows. Similarly, researchers have questioned the extent to which studies of WEIRD populations (Western, Educated, Industrialised, Rich, and Democratic) generalise to the majority of people in the rest of the world. Prof. DeBruine will discuss the role of large-scale crowdsourced projects for addressing both replication and generalisation, with a focus on the Psychological Science Accelerator and her lab's leadership of their first project. The Psychological Science Accelerator is a globally distributed network of more than 360 laboratories, representing 45 countries on all six populated continents, that coordinates data collection for democratically selected studies.