• Food insecurity is experienced as a psychosocial, not only nutritional, condition. • Child-centred multimodal methods reveal emotional, behavioural, and learning impacts. • Hunger-related stress is the most salient driver of negative emotional and behavioural states. • Emotional–behavioural states align with graded levels of food insecurity. • Findings support the integration of nutrition and psychosocial support in schools.
Kasujja et al. (Fri,) studied this question.