Overlapping memory replay during sleep builds cognitive schemata

Sleep enhances integration across multiple stimuli, abstraction of general rules, insight into hidden solutions and false memory formation. Newly learned information is better assimilated if compatible with an existing cognitive framework or schema. This article proposes a mechanism by which the reactivation of newly learned memories during sleep could actively underpin both schema formation and the addition of new knowledge to existing schemata. Under this model, the overlapping replay of related memories selectively strengthens shared elements. Repeated reactivation of memories in different combinations progressively builds schematic representations of the relationships between stimuli. We argue that this selective strengthening forms the basis of cognitive abstraction, and explain how it facilitates insight and false memory formation

Beyond Disability Civil Rights

[Excerpt] This Article argues that to be effective, both domestic and international disability rights must adopt a disability human rights paradigm. Such a framework combines the type of civil and political rights provided by antidiscrimination legislation (also called negative or first-generation rights) with the full spectrum of social, cultural, and economic measures (also called positive or second-generation rights) bestowed by many human rights treaties.16 By acting holistically, this agenda accounts for factors normally exogenous to civil rights laws and ensures that individuals can flourish and participate in their societies. Accordingly, our intention is to share some thoughts on how to best provide disabled citizens with equal opportunity rather than “merely” equal treatment. Internationally, States and civil society organizations have been developing innovative and effective equality measures. We draw on their experiences in providing examples of how disability legislation and policy can be developed to implement a more holistic human rights approach. These lessons are also pertinent for invigorating the ADA

Understanding U.S. Farm Exits

The rate at which U.S. farms go out of business, or exit farming, is about 9 or 10 percent per year, comparable to exit rates for nonfarm small businesses in the United States. U.S. farms have not disappeared because the rate of entry into farming is nearly as high as the exit rate. The relatively stable farm count since the 1970s reflects exits and entries essentially in balance. The probability of exit is higher for recent entrants than for older, more established farms. Farms operated by Blacks are more likely to exit than those operated by Whites, but the gap between Black and White exit probabilities has declined substantially since the 1980s. Exit probabilities differ by specialization, with beef farms less likely to exit than cash grain or hog farms.1997 Census of Agriculture Longitudinal File, farm exit, farm entry, farm structure, farm operator characteristics, farm operator life cycle, Agricultural Finance,

Agricultural Contracting Update: Contracts in 2003

Marketing and production contracts covered 39 percent of the value of U.S. agricultural production in 2003, up from 36 percent in 2001 and a substantial increase over estimated values of 28 percent for 1991 and 11 percent in 1969. Large farms are far more likely to contract than small farms; in fact, contracts cover over half of the value of production from farms with at least $1 million in sales. Although use of both production and marketing contracts has grown over time, growth is more rapid for production contracts, which are largely used for livestock.contracts, contracting, marketing contracts, production contracts, vertical integration, vertical coordination, market structure, risk analysis, price signals, Industrial Organization, Marketing,

Agricultural Contracting Update: Contracts in 2008

Marketing and production contracts covered 39 percent of the value of U.S. agricultural production in 2008, up from 36 percent in 2001, and a substantial increase over 28 percent in 1991 and 11 percent in 1969. However, aggregate contract use has stabilized in recent years and no longer suggests a strong trend. Contracts between farmers and their buyers are reached prior to harvest (or before the completion stage for livestock)and govern the terms under which products are transferred from the farm. Contracts are far more likely to be used on large farms than on small farms, and they form one element in a package of risk management tools available to farmers. Production contracts are used widely in livestock production, while marketing contracts are important to the production of many crops.Production contracts, marketing contracts, farm structure, farm size, farm income, contracting, Agricultural Resource Management Survey, ARMS, risk analysis, Agribusiness, Farm Management, Livestock Production/Industries, Risk and Uncertainty,

FARM OPERATIONS FACING DEVELOPMENT: RESULTS FROM THE CENSUS LONGITUDINAL FILE

This paper examines farms in areas undergoing development, using a longitudinal file constructed by linking several agricultural censuses. Individual farms are followed over the 1982-97 period. Survival, exit, and entrance rates are presented for three types of farms: recreational, adaptive, and traditional. The three types of farms are located where one would expect. Traditional farms are concentrated in nonmetropolitan (nonmetro) counties, while adaptive farms are concentrated in metro core counties. Recreational farms are least common in nonmetro nonadjacent areas, where off-farm opportunities are fewest. The concentration of adaptive farms in metro core counties does not appear to be the result of these farms simply surviving an urban environment better than traditional and recreational farms. In fact, adaptive farms have lower survival rates than traditional farms. Adaptive farms instead had a relatively high entrance rate.urban development, urbanization, specialty agriculture, high-value agriculture, farming, farm structure, Farm Management,

AGRICULTURAL STRUCTURAL ADJUSTMENT TO GOVERNMENT POLICIES: EMPIRICAL EVIDENCE

Economic theory alone cannot predict the impacts of government payments on farm structure. We estimate a 5-equation model for the 1978-96 period to measure the impacts using state micro and macro data sets. We found that government payments were positively associated with farm size and farm exits, but negatively associated with the extent of consolidation in farm production and the off-farm work of operators.government payments, productivity, farm size, farm exits, off-farm work, consolidation, Agricultural and Food Policy,