Equity Effects of Dietary Nudging Field Experiments: Systematic Review

Background: Dietary behaviours are among the key modifiable risk factors for non-communicable diseases. Importantly, dietary behaviours vary substantially between groups and individuals with different socioeconomic positions, with more disadvantaged groups and individuals being exposed to more dietary risk factors. The goal of this review is to summarise the existing research on equity effects of dietary nudging interventions.Methods: Systematic review of nudging interventions conducted in a field setting that report an observable indicator of dietary behaviour, include a control group, and report effect sizes stratified by indicators of socioeconomic status as outlined in the PROGRESS-Plus framework. Two databases (scopus, Pubmed) were searched (last search June 2021), and 18 articles with 19 studies (k = 46 equity comparisons) were included. Risk of bias was assessed using the ROBINS-I tool. Due to heterogeneity in equity dimensions and study outcomes, a harvest plot was used to summarise data.Results: The majority of equity comparisons (38 out of 46) were available for cognitive nudges. Most of these (22 out of 38 comparisons) found that cognitive nudges worked equally well in more and less disadvantaged populations; however, in 12 out of the 38 comparisons, they favoured those who were less disadvantaged. Two out of four comparisons on behavioural nudges favoured more disadvantaged persons.Conclusions: The differential effects of dietary nudging interventions in this review can contribute to increases in health inequalities. At the same time, a substantial number of interventions showed no equity effects. Importantly, this review suggests that more research on nudging interventions and health equity is needed. Future interventions should report effect sizes stratified by indicators of social inequality.Systematic Review Registration: PROSPERO (CRD42019137469)

The role of coalitions at international tariff negotiations: a CGE perspective

Developing countries coalitions form an integral part of tariff negotiations that take place under the aegis of the World Trade Organization. While there was only a single coalition in the 70s, their number increased to 31 in the year 2005. Despite the apparent proliferation of coalitions in tariff negotiations, little research on their theoretical and empirical implications has been produced. In particular, we lack an understanding of efficiency and equity effects of coalitions. By exploring this equity-efficiency nexus, the study finds that developing countries coalitions like the G-90 and the Least Developed Countries Group – while benefiting member countries – lead to less efficiency and less equity overall. Forming the Cairns Group, however, leads to a more efficient and equal distribution of the gains from trade.

Strengthening social accountability in ways that build inclusion, institutionalization and scale: reflections on FHS experience

This editorial provides an introduction to the special issue on “Lessons about intervening in accountability ecosystems: implementation of community scorecards in Bangladesh and Uganda”. We start by describing the rationale for this work in the two study countries. While our project, the Future Health Systems (FHS) project, had been working over the course of more than a decade to strengthen health services, particularly for low income households in rural areas, our teams increasingly recognized how difficult it would be to sustain service improvements without fundamental changes to local accountabilities. Accordingly, in the final phase of the project 2016–2018, we designed, implemented and assessed community scorecard initiatives, in both Bangladesh and Uganda, with the aim of informing the design of a scalable social accountability initiative that could fundamentally shift the dynamics of health system accountability in favor of the poor and marginalized.We describe the particular characteristics of our approach to this task. Specifically we (i) conducted a mapping of accountabilities in each of the contexts so as to understand how our actions may interact with existing accountability mechanisms (ii) developed detailed theories of change that unpacked the mechanisms through which we anticipated the community scorecards would have effect, as well as how they would be institutionalized; and (iii) monitored closely the extent of inclusion and the equity effects of the scorecards. In summarizing this approach, we articulate the contributions made by different papers in this volume.

Fair payments for effective environmental conservation

Global efforts for biodiversity protection and land use-based greenhouse gas mitigation call for increases in the effectiveness and efficiency of environmental conservation. Incentive-based policy instruments are key tools for meeting these goals, yet their effectiveness might be undermined by such factors as social norms regarding whether payments are considered fair. We investigated the causal link between equity and conservation effort with a randomized real-effort experiment in forest conservation with 443 land users near a tropical forest national park in the Vietnamese Central Annamites, a global biodiversity hotspot. The experiment introduced unjustified payment inequality based on luck, in contradiction of local fairness norms that were measured through responses to vignettes. Payment inequality was perceived as less fair than payment equality. In agreement with our preregistered hypotheses, participants who were disadvantaged by unequal payments exerted significantly less conservation effort than other participants receiving the same payment under an equal distribution. No effect was observed for participants advantaged by inequality. Thus, equity effects on effort can have consequences for the effectiveness and efficiency of incentive-based conservation instruments. Furthermore, we show that women exerted substantially more conservation effort than men, and that increasing payment size unexpectedly reduced effort. This emphasizes the need to consider social comparisons, local equity norms, and gender in environmental policies using monetary incentives to motivate behavioral change.

Enhancing equity in participatory forest management through forest management agreements: the case of Gathiuru and Karima forests in Kenya

Kenya is keen on realizing equity between the state and local communities participating in sustainable forest management. Hence, prominence is accorded to Forest Management Agreements (FMAs) under the Participatory Forest Management (PFM) framework. However, there is a scarcity of equity lessons from FMAs implemented so far by the state and Community Forest Associations (CFAs). This paper addresses this gap by exploring two FMAs for procedural and distributive equity effects by comparing the processes of recognition, income, and cost-sharing as well as challenges experienced by the state and CFAs to determine whether FMA implementation was yielding equity outcomes or not. Using literature review and 19 key informant interviews, results from Gathiuru and Karima forests substantiate that FMA is a reasonably robust, multi-objective-win-win tool that promotes equity in PFM. However, the implementation process has been slow. There is a need for more capacity building of CFA members, establishing an inventory-based NTFPs utilization system, and complementing the current PFM framework with explicit provisions for Corporate Social Responsibility.