Book Review

AIDS AND THE NEW ORPHANS COPING WITH DEATH. Barbara O. Dane & Carol Levine (Eds.). Westport, Connecticut: Auburn House, 1994, 158 pp.; $49.95 (hardback) or $17.95 (paperback).     

RELIABILITY OF STATED PREFERENCES FOR CHOLERA AND TYPHOID VACCINES WITH TIME TO THINK IN HUE,VIETNAM

We examine the effect of giving respondents time to think about their stated choices (SC) in a survey of cholera and typhoid vaccine preferences in Hue, Vietnam. Because neither vaccine is widely available in Vietnam, we used the SC approach (a stated preference technique) and gave half of our respondents overnight to think about their choices to make the hypothetical valuation scenario as similar to a real‐life choice situation as possible. Respondents who were given extra time made fewer choices that violated internal validity tests of utility theory, and had lower average willingness to pay (WTP), confirming a result found in similar studies in the contingent valuation literature. (JEL D12, I18, C25)     

HIV Diagnosis Disclosure: Stigma Management and Stigma Resistance

This article reports diagnosis disclosure decision comments arising serendipitously in five focus group discussions with 34 HIV-infected New Yorkers over age 50. Three overarching disclosure themes demonstrate the complexity of diagnosis disclosure decision-making: (a) hiding or selectively disclosing, or stigma management; (b) partial disclosure because of the perception of partial control of the information; and (c) widespread or complete voluntary diagnosis disclosure, representing stigma resistance. Social workers and other human services practitioners should remember the diversity in the HIV population, the aging population, and the HIV-positive aging population. Experiences of HIV stigma and choices about diagnosis disclosure and stigma management or resistance are individual, reciprocal, and dynamic.     

试论人力资本投资理论与我国高等教育

利用人力资本理论探讨高等教育的发展以及中国现代化建设,提出高等教育投入产出的实质是人力资本投资过程。针对人力资本投资过程中所面临的问题,首先要确定高等教育的主体地位,其次根据国家、个人、企业团体的权益,建立起完善的高等教育成本分担理论。     

Radio: a strategic tool for development

Every country should recognize the need to fully involve media leaders in the planning and implementation of population and family planning programs. Broadcasters are the best equipped to understand the "mind-set" of the mass audience and what is needed to bring about changes therein. If there is to be involvement of the media, particularly radio professionals, in the design, development and implementation of population and family planning programs, attention must be given to the inmplications of this in terms of implementing the World Population Plan of Action. Strategies for population communication using radio as the central medium include the following: 1) development of an adequate in-country support structure; 2) development of a sound, well-researched population communication program; 3) on-air programming in the form of instruction rather than entertainment; 4) provision for substantial and continuous feedback from the audience; 5) frequent broadcasts at a prime time of day; and 6) a program commitment of from 5 to 6 years. Radio needs to be recognized as a strategic tool for development; it should be used professionally and should receive sufficient priority by funding agencies.     

Bias Reduction of Likelihood Estimators in Semiparametric Frailty Models

Abstract. Frailty models with a non‐parametric baseline hazard are widely used for the analysis of survival data. However, their maximum likelihood estimators can be substantially biased in finite samples, because the number of nuisance parameters associated with the baseline hazard increases with the sample size. The penalized partial likelihood based on a first‐order Laplace approximation still has non‐negligible bias. However, the second‐order Laplace approximation to a modified marginal likelihood for a bias reduction is infeasible because of the presence of too many complicated terms. In this article, we find adequate modifications of these likelihood‐based methods by using the hierarchical likelihood.     

Perceptions of Drinking and Related Findings From the Nationwide Campuses Study

Abstract

Proponents of social norms approaches maintain that correcting misperceptions of alcohol use among college students may reduce drinking and its consequences. The author used aggregate campus-level data from the Nationwide Campuses Study to test this hypothesis. He defined the misperceptions ratio as the ratio of the frequency of the “average student's” perceived alcohol use to the frequency of self-use at each campus. Each of the 57 colleges reported misperceptions ratios greater than unity. At campuses where students had more accurate perceptions of alcohol use, students were more likely to desire alcohol availability at campus events and to drink on more days throughout the year than at campuses where students had greater misperceptions of alcohol use. The author found no data to support the preferential use of social norms programming on campuses with high levels of self-reported alcohol use or binge drinking. These findings raise questions about potentially unexpected and unintended effects of social norms approaches.