This document discusses integrating gender considerations into cassava breeding research at IITA. It notes that gender is not simply about comparing men's and women's variety preferences, but understanding how task groups organized along gender lines have different preferences based on their work conditions. Tacit and local knowledge of end users is important for breeding, as most preferred traits are tacitly known rather than articulated. The document proposes combining field trials of new cassava varieties with farmers and processors to evaluate what properties of existing and new varieties they prefer, in order to discover new breeding criteria. It would involve giving small plots of 3-4 varieties to groups of mainly women farmers/processors to observe how work is organized and communicated within and between groups.