INTRACULTURAL VARIABILITY IN THE COGNITION OF DANGER AMONG SOUTHERN NEW ENGLAND FISHERS

The costs of the dangers of commercial fishing are very high, yet fishing vessel safety regulations are frequently met with lack of enthusiasm or even rejection by fishers. Why would fishers reject regulations designed to increase their safety? There is a strong possibility that some of the rejection is the result of lack of cognitive sharing and communication between originators of the regulations and the fishers for whom the regulations are designed. This paper examines the pattern of cognition about danger of the occupation among fishers and relates these patterns to sociocultural differences in two southern New England ports. The intent of the study is to help bridge the gap between regulators and users by providing culturally appropriate information that can be used to design more effective policy, training, and enforcement programs.Resource /Energy Economics and Policy,

Eurasian watermilfoil biomass associated with insect herbivores in New York

A study of aquatic plant biomass within Cayuga Lake, New York spans twelve years from 1987-1998. The exotic Eurasian watermilfoil ( Myriophyllum spicatum L.) decreased in the northwest end of the lake from 55% of the total biomass in 1987 to 0.4% in 1998 and within the southwest end from 50% in 1987 to 11% in 1998. Concurrent with the watermilfoil decline was the resurgence of native species of submersed macrophytes. During this time we recorded for the first time in Cayuga Lake two herbivorous insect species: the aquatic moth Acentria ephemerella , first observed in 1991, and the aquatic weevil Euhrychiopsis lecontei , first found in 1996 . Densities of Acentria in southwest Cayuga Lake averaged 1.04 individuals per apical meristem of Eurasian watermilfoil for the three-year period 1996-1998. These same meristems had Euhrychiopsis densities on average of only 0.02 individuals per apical meristem over the same three-year period. A comparison of herbivore densities and lake sizes from five lakes in 1997 shows that Acentria densities correlate positively with lake surface area and mean depth, while Euhrychiopsis densities correlate negatively with lake surface area and mean depth. In these five lakes, Acentria densities correlate negatively with percent composition and dry mass of watermilfoil. However, Euhrychiopsis densities correlate positively with percent composition and dry mass of watermilfoil. Finally, Acentria densities correlate negatively with Euhrychiopsis densities suggesting interspecific competition

Being Surveyed Can Change Later Behavior and Related Parameter Estimates

Does completing a household survey change the later behavior of those surveyed? In three field studies of health and two of microlending, we randomly assigned subjects to be surveyed about health and/or household finances and then measured subsequent use of a related product with data that does not rely on subjects' self-reports. In the three health experiments, we find that being surveyed increases use of water treatment products and take-up of medical insurance. Frequent surveys on reported diarrhea also led to biased estimates of the impact of improved source water quality. In two microlending studies, we do not find an effect of being surveyed on borrowing behavior. The results suggest that limited attention could play an important but context-dependent role in consumer choice, with the implication that researchers should reconsider whether, how, and how much to survey their subjectsEconomic

A Picture of the Research Field of Doctoral Education from the Students’ Perspectives : Studies Using Questionnaires and Scales

Peer reviewe

Best practices for addressing missing data through multiple imputation

A common challenge in developmental research is the amount of incomplete and missing data that occurs from respondents failing to complete tasks or questionnaires, as well as from disengaging from the study (i.e., attrition). This missingness can lead to biases in parameter estimates and, hence, in the interpretation of findings. These biases can be addressed through statistical techniques that adjust for missing data, such as multiple imputation. Although multiple imputation is highly effective, it has not been widely adopted by developmental scientists given barriers such as lack of training or misconceptions about imputation methods. Utilizing default methods within statistical software programs like listwise deletion is common but may introduce additional bias. This manuscript is intended to provide practical guidelines for developmental researchers to follow when examining their data for missingness, making decisions about how to handle that missingness and reporting the extent of missing data biases and specific multiple imputation procedures in publications

diversification as part of a csa strategy the cases of zambia and malawi

Climate variability, associated with farm-income variability, is recognized as one of the main drivers of livelihood diversification strategies in developing countries. In this chapter, we present a synthesis of two comprehensive studies from Zambia and Malawi on the drivers of diversification and its impacts on selected welfare outcomes with a specific attention to climatic variables and institutions. We use geo-referenced farm-household-level data merged with data on historical rainfall and temperature as well as with administrative data on relevant institutions. The two case studies demonstrate that diversification is clearly an adaptation response, as long term trends in climatic shocks have a significant effect on livelihood diversification, albeit with different implications. Whereas the long term variation in growing period rainfall is associated with increased crop, labour and income diversification in Malawi, it is only associated with increased livestock diversification in Zambia. With regard to institutions, we find that access to extension agents positively and significantly correlates with crop diversification in both countries, underlining the role of extension in promoting more resilient farming systems in rural Zambia and Malawi. Fertilizer subsidies are among the most important agricultural policies in both countries, where they significantly affect incentives for income diversification – though in opposing ways – providing important policy implications. The two case studies document distinct ways in which incentives for livelihood diversification (measured along different dimensions) are shaped by increased variability in rainfall and rural institutions. The results also demonstrate that diversification can be an effective adaptation response and the risk-return trade-offs are not as pronounced as might be expected

Intracultural variability in the cognition of danger among southern New England fishers

The costs of the dangers of commercial fishing are very high, yet fishing vessel safety regulations are frequently met with lack of enthusiasm or even rejection by fishers. Why would fishers reject regulations designed to increase their safety? There is a strong possibility that some of the rejection is the result of lack of cognitive sharing and communication between originators of the regulations and the fishers for whom the regulations are designed. This paper examines the pattern of cognition about danger of the occupation among fishers and relates these patterns to sociocultural differences in two southern New England ports. The intent of the study is to help bridge the gap between regulators and users by providing culturally appropriate information that can be used to design more effective policy, training, and enforcement programs. Copyright © 1996 Marine Resources Foundation

Intracultural Variability in the Cognition of Danger Among Southern New England Fishers

The costs of the dangers of commercial fishing are very high, yet fishing vessel safety regulations are frequently met with lack of enthusiasm or even rejection by fishers. Why would fishers reject regulations designed to increase their safety? There is a strong possibility that some of the rejection is the result of lack of cognitive sharing and communication between originators of the regulations and the fishers for whom the regulations are designed. This paper examines the pattern of cognition about danger of the occupation among fishers and relates these patterns to sociocultural differences in two southern New England ports. The intent of the study is to help bridge the gap between regulators and users by providing culturally appropriate information that can be used to design more effective policy, training, and enforcement programs. Copyright © 1996 Marine Resources Foundation