Why convention dominates pension fund trustee investment decision-making

Pension funds may be one of the few avenues now open for financingnew urban infrastructure and development projects. But convention dominates pension fund trustees' investment decisions, so it is difficult to see how the ambitions of advocates of pension fund investment can be squared with trustees' behaviour. The question is: why does convention dominate? Drawing on previously reported interviews and case studies, I propose a framework through which to understand the dominance of convention. In doing so, I identify a set of behavioural traits that structure decisions. This framework is inspired by the contributions of Kahneman and Tversky and their colleagues for understanding the economic psychology of individual decisionmaking. The paper is intended to be a realistic account of the attributes of trustee decisionmaking, recognising the ingrained and systematic nature of the identified habits, rules, and norms. The paper is also inspired by Keynes's work on risk and uncertainty. In combination, I assess the potential for investment innovation by pension fund trustees, noting the importance of analogical reasoning in extending the range of pension funds investments. The paper closes with a comparison of the proposed framework with standard treatments of decisionmaking, including reference to the robustness of psychological models of habit.