The Use of CT Scans in Estimating Age at Death by Examining the Extent of Ectocranial Suture Closure

We examined the utility of CT scans in the evaluation of degree of ectocranial suture closure. Five cranial points (left and right midcoronal positions, left and right midlambdoidal positions, and the lambda) were evaluated in 231 CT scans using a three‐point scoring system (open, partial closed, and closed). The slice increment and thickness varied between three groups of the scans. The results showed a good correlation between degree of suture closure and increasing age in each group. Young individuals (<40 years) and old individuals (>60 years) could be clearly distinguished from the middle‐aged individuals. ANOVA test revealed no difference between two groups of scans and between left and right sides (p > 0.05). Interobserver agreement was good, especially considering the score by sides. The results of this study create the base for developing a robust and simple method to estimate the age at death using CT scans.     

Using State Child Labor Laws to Identify the Causal Effect of Youth Employment on Deviant Behavior and Academic Achievement

On the basis of prior research findings that employed youth, and especially intensively employed youth, have higher rates of delinquent behavior and lower academic achievement, scholars have called for limits on the maximum number of hours per week that teenagers are allowed to work. We use the National Longitudinal Survey of Youth 1997 to assess the claim that employment and work hours are causally related to adolescent problem behavior. We utilize a change model with age-graded child labor laws governing the number of hours per week allowed during the school year as instrumental variables. We find that these work laws lead to additional number of hours worked by youth, which then lead to increased high school dropout but decreased delinquency. Although counterintuitive, this result is consistent with existing evidence about the effect of employment on crime for adults and the impact of dropout on youth crime.

The Economic Evaluation of Policing Activity: An Application of a Hybrid Methodology

This paper advances a hybrid police cost function that synthesises the proactive/preventive and response/reactive methodologies from the criminology literature. The model presents a coherent estimation process that can help in the allocation of scarce resources to police forces and also enable economists, government organisations and criminologists to assess the scale and technical efficiency of forces. This hybrid model uses response survey data for a sample of English and Welsh police forces in which relative efficiency rankings are contrasted with relative performance measures produced by the Audit Commission. We find that there are considerable divergences in police force's scale and technical efficiency during 1997/98 and 1998/99 utilising non-parametric techniques.     

The political economy of IMF forecasts

We investigate the political economy of IMF forecasts with data for 157 countries (1999–2005). Generally, we find evidence of forecast bias in growth and inflation. Specifically, we find that countries voting with the United States in the UN General Assembly receive lower inflation forecasts as domestic elections approach. Countries with large loans outstanding from the IMF also receive lower inflation forecasts, suggesting that the IMF engages in “defensive forecasting.” Finally, countries with fixed exchange rate regimes receive lower inflation forecasts, suggesting the IMF desires to preserve stability as inflation can have detrimental effects under such an exchange rate regime.     

Bringing home the bacon: an empirical analysis of the extent and effects of pork-barreling in Australian politics

Which electorates receive targeted funding, and does targeted funding swing votes? To answer these questions, I analyze four discretionary programs funded by the Australian federal government during the 2001–2004 election cycle. Controlling for relevant demographic characteristics of the electorate, those electorates held by the governing coalition received a larger share of discretionary funding, and a larger number of program grants. Among government seats, funding does not appear to have been directed towards those that were more marginal. More discretionary funding—particularly on road-building—was associated with a larger swing towards the government in the 2004 election.     

A scale for the measurement of attitudes toward handgun control

This paper presents a scale designed for the measurement of attitudes toward handgun control. A review of the literature was undertaken in order to identify salient questions used in previous surveys measuring attitudes toward gun control in general and, more specifically, toward handgun control. Subsequently, thirteen items were developed and included in a statewide survey of 1,442 Texas residents. The thirteen items were then examined using the Guttman scaling evaluation procedure, and nine items were retained on the final scale. The coefficient of scalability for the nine-item scale was .698, and the coefficient of reproducability was .915. This scale represents the first multi-item instrument available for the measurement of attitudes toward handgun control and, therefore, presents a means for more advanced statistical analysis of the factors influencing these attitudes.