Vocational implications of post-polio syndrome

Of more than 1,000,000 survivors of poliomyelitis living in the United States, about 80% experience symptoms associated with post-polio syndrome (PPS). New weakness, fatigue, and pain are the most common symptoms that may appear years after acute polio. PPS is reported to be the most prevalent progressive neuromuscular disease in North America. The physical symptoms of PPS can be severe enough to decrease an individual's quality of life, significantly alter work function, and impose lifestyle changes. The psychological implications of battling once again with a disease that had stabilized decades ago can be devastating. Rehabilitation physicians and counselors knowledgeable of post-polio syndrome and its possible impact on employment can have a positive influence on persons with PPS.     

An Iterative Choice Approach to Valuing Clean Lakes,Rivers, and Streams

This article introduces an iterative choice procedure for valuing inland water quality. This approach breaks up the valuation into a series of component tasks. The water quality ladder approach is not valid empirically. Consequently, respondents in Colorado and North Carolina assessed the value of making water quality rated good by EPA, which has a value of $22.40 per additional percent improvement. Nonuse and probabilistic use are highly valued. The results also indicate how water quality valuations differ for aquatic environment, edible fish, and swimming, as well as for water that is cloudy, smelly, or polluted by toxics. Minorities are particularly likely to rely upon monitorable water quality attributes.     

Carl A. Dawson, 1887–1964

Un ancien collégue d'un pionnier de la sociologie canadienne rend hommage á son oeuvre de professeur, écrivain, chercheur et directeur du département.     

Testing the Validity of the Sibling Sex Ratio Instrument

We test the validity of the sibling sex ratio instrument suggested by Angrist and Evans using the methods proposed by Kitagawa and Huber and Mellace. The sex ratio of the first two siblings is arguably randomly assigned and influences the probability of having a third child, which makes it a candidate instrument for fertility when estimating the effect of fertility on female labor supply. However, identification hinges on the random assignment of the instrument, an instrumental exclusion restriction, and the monotonicity of fertility in the instrument. We find that the instrumental variable tests of Kitagawa and Huber and Mellace do not point to a violation of these assumptions in the Angrist and Evans data (which can, however, not be ruled out even asymptotically as the tests cannot detect all possible violations).     

Communication of ambiguous risk information

This paper reports on the responses of 646 individuals to environmental risk information involving different forms of risk ambiguity. Recipients of more than one set of risk information do not simply average the risk levels provided. Rather, a variety of aspects of the nature of the risks that are communicated influence their probabilistic beliefs. Individuals' perceptions of the risk levels to which they are exposed are likely to be greater: (i) for more ambiguous risks, (ii) for risks for which the unfavorable risk evidence is presented last even when there is no temporal order, (iii) for risks for which the most unfavorable risk studies have been performed most recently, and (iv) for risks where there is asymmetry in the risk ambiguity that imposes substantial potential downside risks. Although these effects are modest for the median individual, the potential for extreme responses that reflect only the most adverse or the most favorable piece of information provided is quite prevalent. These findings are of interest more generally in that they indicate how individuals form their risk perceptions in the presence of risk ambiguity.The authors would like to thank the U.S. Environmental Protection Agency for support of this work under Cooperative Agreements Number CR-815445-01-2 and Number CR-814388-02-1. Dr. Alan Carlin and Dr. Ann Fisher provided valuable guidance in the design of the project, and Dr. Doyle Graham and Dr. Douglas Anthony offered generous assistance in communicating the medical consequences of nerve disease to subjects. Jon LaScala assisted superbly in the administration and analysis of the survey, and Patricia Born provided additional computer programming assistance.     

Resilience Within the Family Networks of Lesbians and Gay Men: Intentionality and Redefinition

This article reviews the literature on gay and lesbian family networks as a way to identify the resilience processes that enable members to create and strengthen their family networks. Two processes, intentionality and redefinition, were identified. Intentionality refers to behavioral strategies that legitimize and support relationships. Redefinition refers to meaning making strategies that create linguistic and symbolic structures to affirm one's network. Brief comparisons are made to the literature on resilience in ethnic minority families, and careful study of the similarities and differences between gay and lesbian family networks, and other marginalized families, is urged.     

Computer assistance for testing hypotheses about qualitative data: The software package AQUAD 3.0

The analysis of qualitative data seems to be inevitably bound to tedious and time-consuming mechanical work, especially if we proceed to more complex analytical procedures like testing hypotheses. In this article we describe the general tasks of qualitative analysis, i.e., reducing data, structuring findings, and drawing conclusions. Then we outline, referring to the software package AQUAD 3.0, how software facilitates the work of qualitative researchers. By describing a practical application of this software, basic features of computer assistance to hypotheses testing are explained.     

Do divorcing couples become happier by breaking up?

Summary.  Divorce is a leap in the dark. The paper investigates whether people who split up actually become happier. Using the British Household Panel Survey, we can observe an individual's level of psychological well-being in the years before and after divorce. Our results show that divorcing couples reap psychological gains from the dissolution of their marriages. Men and women benefit equally. The paper also studies the effects of bereavement, of having dependant children and of remarriage. We measure well-being by using general health questionnaire and life satisfaction scores.