A Comparison of Coronary Artery Stenosis Estimates Made by Forensic Pathologists and Medical Students

Previous studies suggest cardiovascular pathologists are less accurate than noncardiovascular pathologists (e.g., clinical pathologists) in estimating the degree of coronary artery stenosis. To further investigate the effect of training on accurate estimation of coronary artery stenosis, we designed a study to compare the accuracy of estimates made by forensic pathologists versus medical students. Six forensic pathologists and twelve medical students each independently examined 24 images of coronary artery cross sections and gave an estimate of the degree of stenosis. When comparing all 24 images, the forensic pathologists had a median difference between the estimated percentage of stenosis and actual percentage of stenosis of −12.380 and the medical students had a median difference of −16.50 (p-value of 0.08542). In estimating the percentage of stenosis, training in forensic pathology does not guarantee significantly improved accuracy compared with medical students. Our study showed no consistent statistically significant difference between estimates given by forensic pathologists and by medical students.     

The Protective Role of Parental Media Monitoring Style from Early to Late Adolescence

The goal of the current study was to examine the protective role that maternal media monitoring might have for adolescents. This was done by considering whether styles of media monitoring either directly reduced media use, or whether they buffered the associations between aggressive media use and adolescents’ prosocial behavior, aggression, and delinquency. Participants were 681 adolescents from two cities in the United States (51% female; 73% white), and their mothers, who provided data at two different time points, 2 years apart (when adolescents were roughly ages 13 and 15). Mixture modeling results revealed that mothers used four different styles of media monitoring made up of combinations of active and restrictive monitoring as well as forms of co-use. Styles that included active monitoring and connective co-use (i.e., engaging in media with the intent to connect with children) were directly associated with less media use, and moderated links between adolescents’ media use and behavioral outcomes concurrently but not longitudinally. The discussion was focused on the strength of considering multiple strategies of media monitoring together, and how this approach can inform future research in the area of parental media monitoring.     

Revisiting Adjusted ADA Scores for the U.S. Congress, 1947-2007

Philip Habel Department of Political Science, Southern Illinois University Carbondale, Mailcode 4501, Carbondale, IL 62901 This paper replicates and extends Groseclose, Levitt, and Snyder,"Comparing Interest Group Scores Across Time and Chambers: AdjustedADA Scores for the U.S. Congress," which appeared in the AmericanPolitical Science Review (1999/93:33–50). We replicatethe most recent unpublished extension by Dr. Groseclose andresearch assistants for years 1947–1999, and then we extendthe analysis to include years 2000 through 2007. We make availableinflation-adjusted ADA scores from 1947 through 2007, allowingscholars to incorporate the most recent interest group scoresinto their analyses. Author's Note: Authors are listed alphabetically. The authorswish to thank Tim Groseclose for making available both the nominalADA scores from 1947 to 1999 and the Matlab program files usedin this analysis. SA gratefully acknowledges the support ofthe Hoover Institution during her time there as the 2006–07W. Glenn Campbell and Rita Ricardo-Campbell National Fellowand the Robert Eckles Swain National Fellow. PH wishes to thankboth the Dirksen Congressional Center and the National ScienceFoundation, doctoral dissertation improvement division grant493469, for their generous support. He also wishes to acknowledgethe valuable research assistance of James Lewis, Joshua Mitchell,and Matt Bergbower. Special thanks to J. Tobin Grant, ScottMcClurg, and Wendy Tam Cho for their helpful feedback and assistance.All errors are the responsibility of the authors. Replicationmaterials and programs are available on the Political AnalysisWeb site.     

Parental leave policies and parents' employment and leave‐taking

We describe trends in maternal employment and leave‐taking after birth of a newborn and analyze the extent to which these behaviors are influenced by parental leave policies. Data are from the June Current Population Survey (CPS) Fertility Supplements, merged with other months of the CPS, and cover the period 1987 to 1994. This time span is one during which parental leave legislation expanded at both the state and federal level. We also provide the first comprehensive examination of employment and leave‐taking by fathers of infants. Our main finding is that leave expansions are associated with increased leave‐taking by both mothers and fathers. The magnitudes of the changes are small in absolute terms but large relative to the baseline for men and much greater for college‐educated or married mothers than for their less‐educated or single counterparts. © 2009 by the Association for Public Policy Analysis and Management     

Understanding the Relationship Between Onset Age and Subsequent Offending During Adolescence

This article examines the well-documented relationship between early initiation or onset of criminal behavior and a heightened risk of involvement in offending. Previous research examining this question conducted by Nagin and Farrington (Criminology 30:235–260, 1992a; Criminology 30:501–523, 1992b) used data from the Cambridge Study in Delinquent Development and found that: (1) onset age was correlated with offending involvement; and (2) the correlation could be explained by stable individual differences in the propensity to offend rather than a causal effect of early onset age. In this study, similar analytic methods are applied to data from the Second Philadelphia Birth Cohort. This data set consists of all 13,160 males born in Philadelphia in 1958 who resided in the city continuously from ages 10 to 18, slightly more than half of whom were non-white. Information from each of the youths was collected from schools, juvenile justice agencies, other official sources and surveys. In a model that mimics previous analyses, we initially found that an early age of onset is associated with greater subsequent involvement in delinquent behavior. When unobserved criminal propensity was controlled, however, we found that a late rather than an early onset of delinquency was related to future offending. In finding a state dependent effect for age of onset, our findings are contrary to propensity theory in criminology. In finding that it is late rather early onset which puts youth at risk for future offending, our findings are contrary to developmental/life course theory. Our results are more compatible with traditional criminological theory that is friendly to state dependence processes, though they too have not to date articulated why a late onsetting of offending might be particularly criminogenic.