You can add data and documents to CHIELD yourself.
Have you spotted a problem with some of the data in CHIELD? You can fix it! You'll need a free github account.
Go to the document page where you see the problem. You can:
Rohrer, J. M. (2017). Thinking Clearly About Correlations and Causation: Graphical Causal Models for Observational Data. link
Pearl, J. (2009). Causality. Cambridge university press.
Roberts, S. (2018). Robust, causal and incremental approaches to investigating linguistic adaptation. Frontiers in Psychology, 9, 166. link