This article assesses the gender sensitivity of indicators of health, nutrition, education, and composite indices which are relevant to developing countries, using the analytical framework of 'functionings'. It finds that a disaggregated under-10 female-male ratio (0-4 years and 5-9 years) appears to be a suitable indicator for health. Difficulties with data collection and interpretation reduce the reliability of indicators of morbidity and nutrition intake. Nutrition outcome indicators like anthropometric measures are potentially useful, if genetic differences between population groups as well as between males and females are controlled for. In assessing gender gaps in education, enrolment and dropout ratios are more useful than adult literacy or mean years of schooling, but micro-level research is required to decide which of these two is better. Composite indices like the Physical Quality of Life Index and Gender-related Development Index are potentially useful, given some alterations to increase their relevance to developing countries.