were given health examinations under the auspices of the Department of Health. These included examinations of eyes, ears, teeth, nose, throat, heart, nutrition, etc. The Distribution of Intelligence. In view of the fact that these 100,098 fifth grade pupils represent a cross section of the total population of the city, the distribution of their scores (I.Q.'s) is of considerable interest. It is...

This paper examines the global effects of droughts on economic activity and the influence of local and upstream large dams on this relationship. We use spatially-specific data on drought severity and nighttime lights data as a measure of economic activity. The analysis shows that severe and extreme droughts reduce local economic activity. In preliminary analyses, local dams appear to improve th...

to evaluate the effect of different rates of nitrogen fertilizer on competitive ability of canola (okapi cv.) in interference with wild mustard, a split-plot experiment based on a randomized complete block design with 3 replications was carried out at agricultural faculty of bu-ali sina university, in 2008-2009. 4 levels of nitrogen fertilization (100, 150, 200 and 250 kg n ha-1) were assigned ...

We have an intercept β0, a main effect of the measured covariate Mij , β1, a main effect of the unmeasured genotypic value Aij , β2, an interaction effect of the measured covariate and the genotypic value, β3, and a residual term with variance e. This model can be extended with a main effect of the shared environment, β4Cij , plus an additional interaction effect, β5CijMij , but for our purpose...

Genotype by environment interaction in behavioral traits may be assessed by estimating the proportion of variance that is explained by genetic and environmental influences conditional on a measured moderating variable, such as a known environmental exposure. Behavioral traits of interest are often measured by questionnaires and analyzed as sum scores on the items. However, statistical results o...

In two different types of institutions, Englishand Dutch auctions, we collect heart rate data, a proxy for emotion, to test hypotheses based on findings in neural science about the effect of emotion on economic behavior. We first demonstrate that recording heart rates does not distort prices in these auctions. Next we consider whether knowledge of the intensity of a participant’s emotional stat...

We compare statistical and economic measures of forecasting performance across a large set of stock return prediction models with time-varying mean and volatility. We find that it is very common for models to produce higher out-of-sample mean squared forecast errors than a model assuming a constant equity premium, yet simultaneously add economic value when their forecasts are used to guide port...

It is becoming widely accepted that research which considers only the outcome and not the costs associated with new technologies in health care, is of limited value in making decisions about the use of scarce resources. Economic evaluation is becoming a standard feature of clinical research but many published economic evaluations fall short of best practice in their methodology. We have describ...