… PLA Notes CD-ROM 19882001 5 Finding out how people prioritise their food security problems in Chad: the challenge of RRA at national level … survey in (Buchanan-Smith and Young, 1990). It also drew on a `Rapid Food Security Assessment' Chad, using RRA techniques to try and exercise … and prioritise level in Sudan (Maxwell, 1989) as well as on their food security problems. The survey was part of the FAO assistance for …