Amartya Sen

Bio: Amartya Sen is an academic researcher from Harvard University. The author has contributed to research in topics: Poverty & Human rights. The author has an hindex of 149, co-authored 689 publications receiving 141907 citations. Previous affiliations of Amartya Sen include Trinity College, Dublin & University of Chicago.

Commodities and Capabilities

Abstract: Commodities and Capabilities presents a set of inter-related theses concerning the foundations of welfare economics, and in particular about the assessment of personal well-being and advantage The argument presented focuses on the capability to function, ie what a person can do or can be, questioning in the process the more standard emphasis on opulence or on utility In fact, a person's motivation behind choice is treated here as a parametric variable which may or may not coincide with the pursuit of self-interest Given the large number of practical problems arising from the roles and limitations of different concepts of interest and the judgement of advantage and well-being, this scholarly investigation is both of theoretical interest and practical import

Capabilities, Lists, and Public Reason: Continuing the Conversation

Abstract: Amartya Sen addresses the question why he is disinclined to provide a fixed list of capabilities to go with his general capability approach. Capability assessment can be used for different purposes (varying from poverty evaluation to the assessment of human rights or of human development), and public reasoning and discussion are necessary for selecting relevant capabilities and weighing them against each other in each context. It would be a mistake to build a mausoleum for a “fixed and final” list of capabilities usable for every purpose and unaffected by the progress of understanding of the social role and importance of different capabilities.

Social Choice Theory: A Re-Examination

Abstract: Recent developments in social choice theory are critically surveyed in the light of a categorization of interpersonal aggregation problems into four distinct types that seem to require varying treatment but typically do not receive it. Informational inadequacy of the usual social choice framework is discussed in this context. A fairly thorough exploration of the correspondences between consistency conditions for choice functions and regularity properties of the binary relation of preference leads to a re-examination of the class of "impossibility" results in social choice theory, necessitating reinterpretations of various theorems (including Arrow's). SOCIAL CHOICE THEORY is "concerned with relationships between individuals' preferences and social choice" (Fishburn (1973, p. 3)). But a great many problems fit this general description and they can be classified into types that are fundamentally different from each other. It can be argued that some of the difficulties in the general theory of social choice arise from a desire to fit essentially different classes of group aggregation problems into one uniform framework and from seeking excessive generality. An alternative is to classify these problems into a number of categories and to investigate the appropriate structure for each category. In a small way, this is what will be done in this paper, and some of the recent developments in the theory of social choice will be examined in that light.

On Happiness and Human Potentials: A Review of Research on Hedonic and Eudaimonic Well-Being

Abstract: ▪ Abstract Well-being is a complex construct that concerns optimal experience and functioning. Current research on well-being has been derived from two general perspectives: the hedonic approach, which focuses on happiness and defines well-being in terms of pleasure attainment and pain avoidance; and the eudaimonic approach, which focuses on meaning and self-realization and defines well-being in terms of the degree to which a person is fully functioning. These two views have given rise to different research foci and a body of knowledge that is in some areas divergent and in others complementary. New methodological developments concerning multilevel modeling and construct comparisons are also allowing researchers to formulate new questions for the field. This review considers research from both perspectives concerning the nature of well-being, its antecedents, and its stability across time and culture.

Agricultural sustainability and intensive production practices

Abstract: A doubling in global food demand projected for the next 50 years poses huge challenges for the sustainability both of food production and of terrestrial and aquatic ecosystems and the services they provide to society. Agriculturalists are the principal managers of global useable lands and will shape, perhaps irreversibly, the surface of the Earth in the coming decades. New incentives and policies for ensuring the sustainability of agriculture and ecosystem services will be crucial if we are to meet the demands of improving yields without compromising environmental integrity or public health.

Dynamics of dark energy

Abstract: We review in detail a number of approaches that have been adopted to try and explain the remarkable observation of our accelerating universe. In particular we discuss the arguments for and recent progress made towards understanding the nature of dark energy. We review the observational evidence for the current accelerated expansion of the universe and present a number of dark energy models in addition to the conventional cosmological constant, paying particular attention to scalar field models such as quintessence, K-essence, tachyon, phantom and dilatonic models. The importance of cosmological scaling solutions is emphasized when studying the dynamical system of scalar fields including coupled dark energy. We study the evolution of cosmological perturbations allowing us to confront them with the observation of the Cosmic Microwave Background and Large Scale Structure and demonstrate how it is possible in principle to reconstruct the equation of state of dark energy by also using Supernovae Ia observational data. We also discuss in detail the nature of tracking solutions in cosmology, particle physics and braneworld models of dark energy, the nature of possible future singularities, the effect of higher order curvature terms to avoid a Big Rip singularity, and approaches to modifying gravity which leads to a late-time accelerated expansion without recourse to a new form of dark energy.