Dr. Crawford is an anthropological archaeologist specializing in archaeological botany and environmental archaeology. His field is known as palaeoethnobotany or archaeobotany.
Dr. Crawford's current focus is East Asia where he is investigating the origins and intensification of agriculture. He has also investigated human and plant interactions in eastern North America (mainly Ontario and Kentucky with his first field experience being a foray into the wilds of Wisconsin). His work is informed by a comparative approach. The similarities and difference between Eastern North America and East Asia between 10,000 and 1000 years ago are especially intriguing.