Herd Behaviour, Social Norms, and Collective Agricultural Decision-Making in South Sudanese CGSL Groups

Community Group Saving and Lending (CGSL) groups are usually discussed as informal financial institutions that compensate for weak rural banking systems. This article extends that view by examining CGSL groups as behavioural arenas in which herd behaviour, social norms and collective agricultural decision-making are produced, reinforced and sometimes constrained. Using a re-analysis of doctoral thesis data collected among rural respondents in Eastern Equatoria, Jonglei and Lakes States, the article asks whether group-based financial participation influences agricultural decisions only through access to credit, or also through peer observation, regular meetings, shared risk narratives, group reputation and collective expectations. The study used a mixed-methods design combining survey data from 85 sampled respondents, 81 valid questionnaire returns and 17 qualitative interviews. Descriptive statistics, mean-score comparison, chi-square tests, logistic regression and thematic interpretation were used to examine how group norms shape decisions to save, borrow, adopt agricultural technology, move from subsistence to market-oriented production and maintain repayment discipline. The findings show that CGSLs operate as more than rotating cash mechanisms. Respondents strongly endorsed the view that CGSLs are member-managed entities, with an overall mean of 4.64, and that working-capital scarcity pushes farmers toward collective financial solutions, with an overall mean of 4.68. Regular meetings, collective savings used for loans and savings mobilisation were also strongly rated, suggesting that repeated interaction and visible peer behaviour create a normative environment for agricultural decision-making. Inferential evidence further supports the behavioural interpretation: CGSL participation was significantly associated with productivity indicators (χ² = 15.92, p = 0.0001), while access to credit significantly influenced technology-investment decisions (β = 1.9459, p = 0.026). The article argues that herd behaviour in CGSLs is not inherently irrational; under conditions of trust and transparent rules, it can lower decision uncertainty, diffuse agricultural practices and support self-help development. However, it can also reproduce caution, conformity and exclusion when group norms are captured by local elites or when low savings capacity limits innovation. The study recommends behavioural-sensitive CGSL strengthening, transparent group governance, commitment savings, agricultural extension linkages and safeguards against coercive conformity.