Reducing Africa's dependence on Asian rice imports requires tailoring local rice products to food markets that are segmented by cultural heritage of ancient rice domestication and colonial heritage of more recent import substitution policies. Using experimental auctions, we examine quality...

We conducted a randomized controlled trial testing the effect of modest incentives to attend the gym among new members of a fitness facility, a population that is already engaged in trying to change a health behavior. Our experiment randomized 836 new members of a private gym into a control...

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In this paper we assume that choice of commodities at the individual (household) level is made in the budget set and that the choice can be described by a probability density function. We prove that negativity (()0xExp<) is valid for one(x) or two choice variables (x, y) (No Giffen good).Negativity at the market level is valid by summation. The expected demand functions are homogeneous of degree zero in prices and income. We use general positive continuous functions f(x), f(x, y) defined on the bounded budget set. We transform them into probability density functions to calculate E(x) and prove negativity. The present approach use simple assumptions and is descriptive in its nature. Any choice behaviour that can be described by a continuous density function gives the above results. (,,)xyppm Why not keep descriptions as simple as possible?<p>

In this paper we assume that choice of commodities at the individual (household) level is made inside the budget set and that the choice can be described by a probability density function. We prove that law of demand()0xExpis valid for one(x) or two choice variables (x, y)*. The law of...

Most economic models assume the existence of a representative consumer with mean preferences, which is an obvious simplification. Consumers unveil their heterogeneous preferences through continual choices over goods and their characteristics. However, there is a limit to product segmentation:...

From 1998 to 2009 I find that the average time between U.S. households' grocery shopping trips has steadily increased from 4.7 to 6.2 days, and from 1998 to 2006 per capita monthly consumption of fresh fruits and vegetables has decreased from 130 to 112 oz. To understand these changes, a dynamic...

The idea that consumers are rational decision makers, who carefully consider options when making a decision about a certain phenomenon, will soon phase out! Believe it or not. In a bid to better understand the consumer, a myriad of economists still waste their precious time on “not-so-deep”...

The present study intends to develop a framework for a new consumption theory that is pertinent to the economy in the age of artificial intelligence and robots. In the new framework, besides the monetary budget constraint, there are also temporal, spatial and physiological constraints on an...

We develop a systematic, functional approach to revealed preference tests based on completing preferences. Our approach is based on the notion of sequential closure, which generalizes the notion of transitive closure. We show that revealed preference tests developed for various decision theories...