A rapid survey technique for ‘Appropriate technology’ ecological indicators in developing urban areas

For planners, providers and evaluators of vital services in urban areas of developing nations, the availability of sufficient environmental data is oftentimes a major stumbling block. The authors here present a low-cost, rapid survey technique for gathering information on the urban ecology. The effort is developed from and validated in a research program correlating urban neighborhood (barrio) characteristics with infant and child mortality in Cali, Colombia. The technique establishes a minimal set of indicators exhibiting variance with respect to other social indices by utilizing the combined results of a random sample questionnaire and a secondary data set gathered from various public sources. The subset of efficient indicators of quality of life is derived from the total data set by utilizing a system of ridit weights.     

Identifiability of two‐component skew normal mixtures with one known component

We give sufficient identifiability conditions for estimating mixing proportions in two‐component mixtures of skew normal distributions with one known component. We consider the univariate case and two multivariate extensions: a multivariate skew normal distribution (MSN) and the canonical fundamental skew normal distribution (CFUSN). The characteristic function of the CFUSN distribution is additionally derived.     

The Negative Effects of Populism on Gay and Lesbian Rights*

Objective. The objective of this article is to examine the degree to which populist features of state governments affect minority interests, particularly gays, lesbians, and bisexuals (GLB) Method. We examine the effects of specific institutional features that affect state government responsiveness to majority preferences on GLB policies: bans on same‐sex marriage and hate crime. We also control for variations in political environment. Results. Features that increase popular control over policy making and policymakers advance anti‐GLB policies but have little effect on pro‐GLB policies; however, legislative term limits have the opposite effect. Further, constituency size and senators' term length increases both types of policies. Conclusions. The findings indicate that an unpopular minority is likely to be harmed by populist features that increase the role of citizens and may be helped by features that shield legislators from majoritarian preferences.     

Public Disclosure and Dissimulation of Insider Trades

Regulation requiring insiders to publicly disclose their stock trades after the fact complicates the trading decisions of informed, rent‐seeking insiders. Given this requirement, we present an insider's equilibrium trading strategy in a multiperiod rational expectations framework. Relative to Kyle (1985), price discovery is accelerated and insider profits are lower. The strategy balances immediate profits from informed trades against the reduction in future profits following trade disclosure and, hence, revelation of some of the insider's information. Our results offer a novel rationale for contrarian trading: dissimulation, a phenomenon distinct from manipulation, may underlie insiders' trading decisions.