## Keywords [research methods](<../Bibliography/keywords/research methods>) ## Publication [Download the annotated PDF](<https://attachments.kaanu.org/files/causal mechanisms 2010 Hedström & Ylikoski.pdf>) <iframe src='https://docs.google.com/gview?url=https://attachments.kaanu.org/files/causal mechanisms 2010 Hedström & Ylikoski.pdf&embedded=true' style='width:100%; height:1000px;' frameborder='0'></iframe> [Original Source](https://www.annualreviews.org/content/journals/10.1146/annurev.soc.012809.102632)