Time series analyses of total water production and domestic and commercial sales in the Goleta County Water District were performed to evaluate the extent to which a local water moratorium and conservation campaign have influenced water consumption. The findings indicated an average 15% reduction in water consumption for the three years following the implementation of the moratorium.
In this paper we provide a didactic introduction to econometric estimation procedures for data with both cross-sectional and longitudinal variation. Several different ap proaches are discussed, and data from an earlier study by Deutsch and Alt (1977) are reanalyzed as an example.
A survey of 710 undergraduates was conducted to assess the probable patterns of utilization of sex-choice technology when it becomes widely available. Ideal family composition was determined along with demographic and attitudinal variables. Results confirmed the overwhelming preference for male children, in general, and male firstborn children, in particular: 85% wanted a firstborn boy, while 73% wanted a secondborn girl. Reasons for the choice reflected both considerable knowledge of advantages accruing to firstborn children and stereotypic expectations regarding sons and daughters. The possible consequences of widespread use of sex choice technology for women's civil rights are discussed.
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