Citizen science (CS) is gaining global recognition. Understanding why people contribute to CS and why they (dis)continue is crucial. While several CS studies draw from existing theoretical frameworks, adapting these frameworks to CS research is still lagging, and applications in the Global South remain limited. This study investigated the reliability of two commonly applied psychometric tests, the Volunteer Functions Inventory (VFI) and the Theory of Planned Behaviour (TPB), in two CS networks in southwest Uganda. Data was collected using a semi-structured questionnaire. Cronbach's alpha indicated moderate to low reliability. More robust measures showed higher reliability but confirmed overall patterns. The study recommends caution when adopting existing theoretical frameworks to CS research and proposes the development and validation of context-specific psychometric tests.
