Psychologists are not using large, existing, free data to its potential. We don't know what exists, what it contains, or how to use it without a huge investment. Secondary analysis of large, open datasets can improve replicability and reproducibility over small new studies, e.g., through accessibility, high power, generalizability, and validated measures. Between-subjects moderation designs particularly lack power. However, these resources are underused in research and education. Student research often has low inference quality, and educators may lack access to use these tools for pedagogy.
Is there a list of large-scale, free datasets with psychological variables? Additionally, is there a list of other such lists?