Luckyn-Malone, Phoebe. “Cognitive constraints on theories and category structure in the twelfth-century Arabic agricultural manual of al-Tignari.” Chapter accepted for publication in the proceedings of the Mediterráneos Conference which was held at the CCHS-CSIC in Madrid, December 13-15, 2010. PDF **Pre-publication draft—subject to further editorial revision** Abstract This study investigates the role of cognitive bias [...]