We develop interpretable, quantitative indices of the objective and subjective complexity of lottery choice problems that can be computed for any standard dataset. These indices capture the predicted error rate in identifying the lottery with the highest expected value, where the predictions are...

In this paper we review recent advances in financial economics in relation to the measurement of systemic risk. We start by reviewing studies that apply traditional measures of risk to financial institutions. However, the main focus of the review is on studies that use network analysis paying...

Filing income tax returns or insurance claims often requires that individuals comply with complex rules to meet their obligations. We present evidence from a laboratory tax experiment suggesting that the effects of complexity on compliance are intrinsically linked to distributive fairness. We...

The present complexity approach is based on two assumptions: A1: measurability of deviations of outcomes with respect to reference values; A2 : extension of A1 to multi-set analysis. Complexity is then defined in terms of multi-set deviation compared to single-set ones; an interpretation is...

We study two dimensions of complexity that may interfere with individual choice. The first one is object complexity, which corresponds to the difficulty in evaluating any given alternative in a choice set. The second dimension is composition complexity, which increases when suboptimal...

We provide experimental evidence that core intertemporal choice anomalies - including extreme short-run impatience, structural estimates of present bias, hyperbolicity and transitivity violations - are driven by complexity rather than time or risk preferences. First, all anomalies also arise in...

As is now well documented, aid is given for both political as well as economic reasons. The conventional wisdom is that politically-motivated aid is less effective in promoting developmental objectives. We examine the ex-post performance ratings of World Bank projects and generally find that...

The bulk of International Finance Corporation (IFC) lending benefits companies from rich countries, and projects in countries with middle income. Large conglomerates such as Lidl or Mövenpick have been among its direct beneficiaries. This contrasts to some extent with the IFC's official...

Chinese aid comes with few strings attached, allowing recipient country leaders to use it for domestic political purposes. The vulnerability of Chinese aid to political capture has prompted speculation that it may be economically ineffective, or even harmful. We test these claims by estimating...

We investigate the impact of foreign aid on inter-governmental transfers in India. While anecdotal evidence suggests that the central government substitutes fiscal transfers with earmarked foreign aid for state governments (fungibility), empirical evidence is scant due to the complex procedure...