Two simplified proofs for Roberts’ theorem

Roberts (Aggregation and Revelation of Preferences. Papers presented at the 1st European Summer Workshop of the Econometric Society, pp. 321–349. North-Holland, 1979) showed that every social choice function that is ex-post implementable in private value settings must be weighted VCG, i.e. it maximizes the weighted social welfare. This paper provides two simplified proofs for this. The first proof uses the same underlying key-point, but significantly simplifies the technical construction around it, thus helps to shed light on it. The second proof builds on monotonicity conditions identified by Rochet (J Math Econ 16:191–200, 1987) and Bikhchandani et al. (Econometrica 74(4):1109–1132, 2006). This proof is for a weaker statement that assumes an additional condition of “player decisiveness”. Supported by grants from the Israeli Ministry of Science and the Israeli Academy of Sciences.     

Drawing the Line: The Development of a Comprehensive Assessment of Infidelity Judgments

Infidelity is a leading cause of relationship discord and dissolution, and couples generally report expectations to maintain monogamy. However, a majority of men and women report engaging in some form of infidelity at least once in their lives. Research assessing judgments of the behaviors that constitute infidelity is lacking. The three studies reported here advanced the literature by developing and validating the Definitions of Infidelity Questionnaire (DIQ), a comprehensive measure examining infidelity judgments. Exploratory and confirmatory factor analyses indicated four factors to the scale: sexual/explicit behaviors, technology/online behaviors, emotional/affectionate behaviors, and solitary behaviors. Investigation of the psychometric properties demonstrated the DIQ to be reliable and valid. Participants agreed that sexual/explicit behaviors comprised infidelity to the largest extent, whereas other types of behaviors (technology/online behaviors, emotional/affectionate behaviors, and solitary behaviors) were judged as comprising infidelity to a lesser extent. Men reported more permissive judgments than did women. This study provides insights regarding operationalizing infidelity and identifying areas of ambiguity and consensus. Implications of the findings for educators and practitioners working with individuals in intimate relationships are discussed.     

The religious and worldview dimension of intercultural education: the Council of Europe’s contribution

ABSTRACT

This article traces the Council of Europe’s work on teaching about religions and non-religious worldviews, regarded as an important contributor to intercultural education. It explains why studies of religions came late in the Council of Europe’s educational work and traces the development of a project which led to a Recommendation from its Committee of Ministers on teaching about religions and non-religious worldviews. It summarises follow-up work by the Council of Europe and the European Wergeland Centre, which led to the publication of Signposts. It outlines new research on themes identified in Signposts and discusses the relationship between intercultural education and studies of religions, in the context of the Council of Europe and responds to criticisms of its work. An account of the development of a new teacher training module, based on Signposts, is given. The module can be adapted for use in Council of Europe member states and in different settings, including university and school-based teacher training. An account is given of the work of the module’s writing group, its structure and chapters, the piloting undertaken and how it could develop. Finally, this article introduces the concept of ‘dialogical liberalism’, aiming to promote dialogue and discussion, rather than imposing equality.     

Age,autos, and the value of a statistical life

The value of a statistical life (VSL) is used to assign a dollar value to the benefits of health and safety regulations. Many of those regulations disproportionately benefit older people, but most estimates of the VSL come from hedonic wage regressions with few older workers and no retirees. Using automobile purchase decisions, I estimate a VSL for individuals from the age of 18 up to the age of 85. Combining information on vehicle holdings and use, household attributes, used vehicle prices, crash test results, and yearly fatal accidents for each make, model, and vintage automobile, I calculate a separate willingness to pay for reduced mortality for different age groups. I find a significant inverted-U shape to the age-VSL function that ranges from $1.5 to $19.2 million (in 2009 dollars). The shape and magnitude of the vehicle-based age-VSL relationship corroborate labor market estimates and extend the age range of revealed preference evidence on the relationship between age and the VSL.     

Overcoming Inertia: Do Automated Saving and Investing Strategies Work?

Many workers do not take advantage of savings opportunities provided to them at their workplace, nor do they always make wise investment decisions regarding employer plans. Various automated strategies have been implemented by employers with the objective of increasing retirement plan participation and, hence, the financial security of workers. Automatic strategies work by proactively arranging some type of action (e.g., plan enrollment) to occur unless people specifically opt out. This article examines and synthesizes previous empirical research about five automatic savings and investing strategies: (a) automatic retirement savings plan enrollment, (b) automatic contribution increases, (c) automatic portfolio rebalancing, (d) automatic rollovers, and (e) automatic investment plans. Advantages and disadvantages of each strategy are discussed, along with implications for financial educators.     

The construction of intellectual disability by parents and teachers

This study examines how disability is constructed by significant adults in the lives of young people with intellectual disability. Specifically, we are examined how parents of those affected by intellectual disability and teachers in special schools construct intellectual disability in talk. Using focus group interviews, we examined whether stigma might be recreated or sustained within the family and school settings of those affected by intellectual disability. Parents and school staff constructed disability as negative, articulating difference from ‘the norm’, which was claimed to drive social isolation for affected young people. There was also evidence that parents and teachers attributed less agency to young people affected by intellectual disability. Discussion orients to how parents and teachers, see themselves as advocates for those with intellectual disability highlight, whilst at the same time recreating pervasive and subtle distinctions between children with and without intellectual disability.     

State-Level 2010 Census Coverage Rates for Young Children

The Census Bureau’s demographic analysis (DA) shows that the net undercount rate for children aged 0–4 was 4.6 percent in the 2010 U.S. Decennial Census while adults (age 18 and older) had a net overcount rate of 0.7 percent. For the population aged 0–4, DA estimates are seen as more accurate than the U.S. Decennial Census because the estimates for this young population rely heavily on highly accurate birth certificate data. Given the relatively high net undercount rate for young children, it would be useful to examine census coverage rates for this population in subnational geographic units. In this study, the 2010 U.S. Decennial Census counts of children aged 0–4 are compared to the corresponding figures from the Census Bureau’s Vintage 2010 Population Estimates in each state. Differences between the 2010 U.S. Decennial Census count and the Vintage 2010 Population Estimates for the population aged 0–4 range from an estimated net undercount of 10.2 percent in Arizona to an estimated net overcount of 2.1 percent in North Dakota. Larger states tended to have higher net undercounts than smaller states. The ten largest states account for about 70 percent of the national net undercount of the population aged 0–4. Of all the factors examined here, the relative size of the Blacks Alone or in Combination plus Hispanics population is most highly correlated with the estimated net undercount of the population aged 0–4. Other measures that were highly correlated with net undercount rates for the population aged 0–4 were linguistic isolation, percent of adults without a high school degree, and the unemployment rate. In general, characteristics of people are more highly correlated with the net undercount rates of young children than the characteristics of housing units.