Abstract
Persistent structural constraints continue to challenge enterprise growth in many African economies. Diagnostic analyses of the business environment are critical for policy formulation, yet their evolution and efficacy over time require systematic examination to inform future interventions. This policy analysis aims to critically evaluate the diagnostic frameworks applied to assess the business environment, identifying persistent gaps and analysing the trajectory of policy responses to structural impediments. The study employs a longitudinal, qualitative content analysis of major diagnostic reports, coupled with a comparative review of resultant policy instruments and implementation records. This triangulates documentary evidence with stakeholder perceptions documented in ancillary evaluations. A dominant theme identified is the recurrent diagnostic focus on access to finance and infrastructure, which constituted over 60% of cited constraints. However, findings reveal a critical gap in diagnosing behavioural and psychological factors affecting entrepreneurial decision-making within the prevailing structural context. While diagnostics have effectively catalogued tangible barriers, their relative inattention to behavioural dimensions has led to policy responses that are structurally sound but may underperform due to unaddressed human factors. Future diagnostic exercises should integrate behavioural audit modules. Policymakers should design interventions combining structural improvements with 'nudge'-based mechanisms to enhance uptake and efficacy. A permanent, multi-stakeholder diagnostic oversight council is proposed. Business environment diagnostics, structural constraints, policy analysis, behavioural finance, Tanzania This paper provides a novel synthesis of longitudinal diagnostic data with behavioural science principles, proposing an integrated policy mechanism for more holistic business environment reform.