Welfare Benefits and Female Headship in U.S. Time Series

A considerable amount of work has been done on the relationship between AFDC benefits and family structure in the United States. The evidence to date—based on cross-state variation in welfare benefits and family structure, often with state fixed effects—indicates that there is some nonzero effect of those benefits on marriage and fertility, although disagreement remains about the magnitude of the effect. It is undisputed, however, that time-series trends in family structure are not correlated in the direction that the cross-state evidence would suggest, because real benefits have been falling, even relative to wages, in aggregate time series. This paper reexamines the time-series evidence with particular attention to the role of wages in explaining trends in headship, and notes that the correct specification includes male as well as female wages. When both are controlled, welfare benefits have a slight positive impact on female headship even in time series. The results demonstrate the importance of labor market factors in explaining trends in female headship.

A structural model of multiple welfare program participation and labor supply

One of the long-standing issues in the literature on transfer programs for the U.S. low-income population concerns the high cumulative marginal tax rate on earnings induced by participation in the multiplicity of programs offered by the government. Empirical work on the issue has reached an impasse partly because the analytic solution to the choice problem is intractable and partly because the model requires the estimation of multiple sets of equations with limited dependent variables, an estimation problem which until recently has been computationally infeasible. In this paper we estimate a model of labor supply and multiple program participation using methods of simulation estimation that enable us to solve both problems. The results show asymmetric wage and tax rate effects, with fairly large wage elasticities of labor supply but very inelastic responses to moderate changes in cumulative marginal tax rates, implying that high welfare tax rates do not necessarily induce major reductions in work effort.

Tax Rates and Work Incentives in the Social Security Disability Insurance Program: Current Law and Alternative Reforms

The Social Security Disability Insurance (SSDI) Program has long been criticized by economists for its apparent work disincentives stemming from the imposition of 100 percent tax rates on earnings. However, the program has been modified in recent years to allow recipients to keep some of their earnings for fixed periods of time. Moreover, additional proposals have been made for lowering the tax rate further and for providing various additional financial work incentives. We use the basic labor supply model to show the expected effect of these reforms on work effort. In addition, we provide a numerical simulation that shows the magnitude of the monetary incentives provided by the reforms for different categories of individuals. We find that the proposed reforms have ambiguous effects on work effort and could, contrary to perceived wisdom, possibly reduce work effort and increase the number of SSDI recipients. However, the simulations show that reforms based on earnings subsidies for private employers are more likely to increase work effort and to lower the caseload.

A new <i>Scabrotrophon</i> (Gastropoda: Muricidae) from Hawaii and discussion about the generic classification of <i>Boreotrophon kamchatkanus</i> Dall, 1902, a related species

A small muricid collected at 414 m off the Hawaiian Island of Oahu is described and compared, on the basis of shell characters only, with a syntype and two other specimens of Scabrotrophon kamchatkanus (Dall, 1902) (new combination) from the Northern Pacific. SEM images of the operculum, radula, and of the penis are illustrated for the new species

Analysis and correlation of the test data from an advanced technology rotor system

Comparisons were made of the performance and blade vibratory loads characteristics for an advanced rotor system as predicted by analysis and as measured in a 1/5 scale model wind tunnel test, a full scale model wind tunnel test and flight test. The accuracy with which the various tools available at the various stages in the design/development process (analysis, model test etc.) could predict final characteristics as measured on the aircraft was determined. The accuracy of the analyses in predicting the effects of systematic tip planform variations investigated in the full scale wind tunnel test was evaluated

What Works: Principal Leadership Behaviors that Positively Impact Student Achievement in Elementary Schools

Effective leadership behaviors are imperative in contributing to student achievement and the overall culture of a school. School leaders must mold the culture of the school in order to create an environment which is conducive to learning. Studies on school leadership and student achievement have highlighted the evidence of school leadership behaviors which contribute to student achievement. The purpose of this investigation studied the extent of school leadership behaviors and or characteristics that contribute to student achievement. This study was designed to identify the relationship between the behaviors of the school leader and student achievement. The study determined if teachers and principals perceptions of leadership behaviors contribute to student achievement. More specifically, this investigation was designed to study the behaviors and practices of elementary principals as it relates to student achievement in elementary school students in a large urban school district. Sixty-three elementary teachers and six principals were selected for this study. The six principals were apart of the focus group interview. Data was collected through teacher and principal surveys, audio-taped interviews and transcriptions. SPSS 13.0 was selected as a means to interpret and analyze data. 2 The results of the study support the literature and indicate that principal leadership is critical to student achievement in elementary school students. More specifically, it raised the question about what specific leadership behaviors are used to increase student achievement. This study further clarified that the principal is the primary person for instituting leadership among all within the school which ultimately contribute to student success. The elementary principal has a demanding and challenging job in and of itself, but by recognizing the leadership behaviors, the principal can influence the climate, productivity, effectiveness of their school and ultimately student achievement