Christopher B. Barrett and Mark A. Constas Cornell University Presentation at the International Food Policy Research Institute August 2, 2013 Toward A.

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Presentation transcript:

Christopher B. Barrett and Mark A. Constas Cornell University Presentation at the International Food Policy Research Institute August 2, 2013 Toward A Theory of Resilience for International Development Applications

Motivation “Resilience” has rapidly become a ubiquitous buzzword, but ill-defined concept within the development and humanitarian communities

Why development and humanitarian communities’ current fascination with “resilience”? 1)Risk perceived increasing in both frequency and intensity 2)Recurring crises lay bare the longstanding difficulty of reconciling humanitarian response to disasters with longer- term development efforts. 3)Increasingly recognize interdependence of biophysical and socioeconomic systems. Tap ecological work on resilience. But we lack a theory-measurement-and-evidence-based understanding of what resilience is with respect to poverty and hunger, how to measure it, and how to effectively promote it so as to sustainably reduce chronic poverty/food insecurity. Motivation

At the same time, much ambivalence (or worse) about the ‘rise of resilience’ 1)Seen as too imprecise and malleable a concept/term 2)Not pro-poor as presently formulated 3)Often ignores issues of agency/power We aim to address these important critiques by advancing a simple initial theory of resilience that enhances precision and anchors the use of resilience in the broader struggle to reduce poverty and food insecurity. Motivation

Existing economic theories of welfare dynamics (especially ‘poverty traps’) closely parallel the ecological literature on resilience and resistance: similar ODE-based mathematics of dynamical systems. But foci differ – systems vs. individual elements, role of human agency, the normative project, etc. – so need to adapt the ecological resilience literature using the existing tools of development studies and economics concerning the stochastic dynamics of individual and collective human well-being. Need to Adapt

Resilience of whom to what? Subject of interest – quality of life, roughly Sen’s ‘capabilities’. This implies a focus on individuals’ (and groups’) well-being within a system, not the state of a system itself. System has instrumental rather than intrinsic importance. Focus further on minimizing the human experience of chronic poverty. Do not focus on a specific source of risk b/c problem is uninsured exposure to a wide array of stressors (ex ante risk) and shocks (ex post, adverse realizations) to which resilience implies adaptability while staying/becoming non-poor. Toward a Theory

Concept of Resilience for Development Development resilience represents the likelihood over time of a person, household or other aggregate unit being non-poor in the face of various stressors and in the wake of myriad shocks. If and only if that likelihood is and remains high, then the unit is resilient. Key Elements: focus on stochastic dynamics of (aggregable) individual standards of living Normative implication: prioritize avoidance of and escape from chronic poverty and minimize within the population and over time the experience of low standards of living. Toward a Theory

Stochastic Well-Being Dynamics Consider the moment function for conditional well-being: m k (W t+s | W t, ε t ) where m k represents the k th moment (e.g., mean (k=1), variance (k =2) or skewness (k =3) W t is well-being at time t ε t is an exogenous disturbance (scalar or vector) at time t These moment functions describe quite generally, albeit in reduced form, the stochastic conditional dynamics of well-being. Toward a Theory

Noncontroversially: NPZ >> CPZ >> HEZ Those in CPZ or HEZ are chronically poor in expectation (E[W ∞ ]<p) The CEF reflects indiv/collective behaviors (agency/power) w/n system Toward a Theory Ex: Nonlinear expected well-being dynamics with multiple stable states (m 1 (W t+s | W t, ε t ) )

For the current non-poor, seek resilience/resistance against shocks in the ecological sense: no shift to either of the lower, less desirable zones. But for the current poor, those in HEZ/CPZ, the objective is productive disruption, to shift states to the NPZ. Asymmetry is therefore a fundamental property of resilience against chronic poverty. Thus stability ≠ resilience. The development ambition is to move people into the non-poor zone and keep them there. The humanitarian ambition is to keep people from falling into HEZ … offers foundation of a rights- based approach to resilience. Toward a Theory

Note: Transitory shocks (- or +) can have persistent effects Risk endogenous to system state CTDs reflect both natural and socioeconomic contexts Explicitly incorporate risk by integrating broader set of moment functions to move from CEF to CTDs: Toward a Theory

Objective: min likelihood people fall into HEZ/CPZ Three options: 1)Shift people’s current state – i.e., increase W t. Ex: transfers of cash, education, land or other assets. 2)Alter CTDs directly through risk reduction/transfer (∆s system too). Ex: social protection - EGS, insurance, improved police protection, drought-resistant varieties. 3)Change the underlying system structure – institutions/ technologies – induces ∆ in behaviors and CTDs. Prob: multi-scalar reinforcement – ‘fractal poverty traps’ Must explore the feedback within broader system to identify possible intervention points behind univariate dynamics. Programming implications WtWt WtWt

The role of social institutions, power, exclusion and solidarity “A tale of two widows” And would the widower’s dynamic = the widow’s? Programming implications

Generalize to admit the role of the natural resource state, R t : m k (W t+s | W t, R t, ε t ) And recognize that parallel dynamics exist for the resource: rm k (R t+s | R t,W t, ε t ) Now feedback potentially arises between R and W (e.g., range conditions depend on herd size/stocking rate, disease reproduction depends on household incomes) Or at least correlation due to ε t (e.g., climate). Then the resilience of the underlying resource base becomes instrumentally important to resilience against chronic poverty. Feedback between sub-systems can be crucial Toward Systems Integration

Coupled human and natural systems dynamics Problem:- Many candidate contemporaneous relationships between R t and W t (e.g., EKC vs. soil degradation thresholds) make prediction difficult at best. Toward Systems Integration

If agencies program around resilience goals, then we need to be able to measure it and evaluate program/project performance. Should use theory to guide measurement. Key measurement implications of this theory: 1.Estimate the conditional moment functions for well- being, m k (·), and the natural resource base, rm k (·). 2.Use estimated moments to estimate the probability of poverty in each of a sequence of time periods. 3.Based on a normative assessment of an appropriate tolerance level for the likelihood of being poor over time, individuals, households, communities, etc. could be classified as resilient or not. Then do impact evaluation based on such measures. Toward Measurement and Evaluation

Resilience is a popular buzzword now. But little precision in its use, theoretically, methodologically or empirically. We aim to help facilitate rigorous, precise use of the concept to help identify how best to avoid and escape chronic poverty. This will require advances in theory, systems integration, measurement and empirical work in many different contexts and over time. Much to do in all areas … a massive research agenda, especially as agencies begin using resilience as a programming principle. But we must start with a firm theoretical foundation. Summary

Thank you for your time, interest and comments! Thank you