Nationally-representative Dataset Research Articles

Reversing fortunes or content change? Gender gaps in math-related skill throughout childhood

Many scholars and policy makers of education have focused significant attention on male advantages in math skills during adolescence, but have often overlooked female advantages in math skills that emerge before school begins. As a way to explain this conflicting pattern, some scholars cite exposure to schooling as a reason why girls experience what some have termed girls’ “reversal of fortunes.” By using first-of-its-kind data I examine math-related skills with proscriptive data from early to late childhood using two nationally-representative data sets. Moving beyond standardized assessments of math skills, this study reconciles these two competing trends using subset measures. Far from a reversal of fortunes, girls excel in math skills that are less complex (i.e. counting, shape recognition) across childhood. Girls’ disadvantages in math emerge with content change—as item complexity increases over time (i.e. multiplication, division, and fractions). In contrast to standardized assessments of cognitive skills, gender gaps in item complexity may be more revealing for understanding the origins and development of gender stratification.

Diverse alcohol drinking patterns in 20 African countries

ABSTRACT Aims This paper describes drinking patterns in 20 African countries, exploring the extent of abstention, heavy occasional drinking and daily light drinking and how these aspects of drinking are inter-related. Design and participants Data were collected as part of the World Health Survey in 2002-04 and comprise national representative data sets from 20 African countries. A cross-sectional survey of 77 165 adults aged 18 years and older were undertaken by face-to-face interviews in respondent households. Measures Drinking behaviour was assessed in terms of life-time abstention and the following measures over the 7 days immediately preceding interview: high consumption (15 or more drinks); heavy drinking occasions (five or more standard units at at least one session) and daily light drinking (one or two drinks daily). Findings In four countries (Comoros, Mali, Mauritania and Senegal), virtually all respondents were life-time abstainers. The prevalence of current drinkers (previous week) did not exceed one-third in any country. Among current drinkers the prevalence of heavy drinking varied between 7% and 77% and the prevalence of daily light drinkers varied between 0% and 21%. Overall drinking patterns varied significantly between and within the examined African countries. Conclusions African drinking patterns are diverse, and although life-time abstinence dominates in African countries, a single typical pattern of drinking for the African continent, such as the alleged 'all-or-none' pattern, was not observed.

Big School, Small School: (Re)Testing Assumptions about High School Size, School Engagement and Mathematics Achievement

In an effort to increase both adolescents' engagement with school and academic achievement, school districts across the United States have created small high schools. However, despite the widespread adoption of size reduction reforms, relatively little is known about the relationship between size, engagement and outcomes in high school. In response, this article employs a composite measure of engagement that combines organizational, sociological, and psychological theories. We use this composite measure with the most recent nationally-representative dataset of tenth graders, Educational Longitudinal Study: 2002, (N = 10,946, 46% female) to better assess a generalizable relationship among school engagement, mathematics achievement and school size with specific focus on cohort size. Findings confirm these measures to be highly related to student engagement. Furthermore, results derived from multilevel regression analysis indicate that, as with school size, moderately sized cohorts or grade-level groups provide the greatest engagement advantage for all students and that there are potentially harmful changes when cohorts grow beyond 400 students. However, it is important to note that each group size affects different students differently, eliminating the ability to prescribe an ideal cohort or school size.

Entrepreneurship, Self-Employment and Business Data: An Introduction to Several Large, Nationally-Representative Datasets

Only a few large, nationally-representative datasets include information on both the owner and the business. We briefly describe several of the most respected and up-to-date sources of data on entrepreneurs, the self-employed, and small businesses. More information including estimates of recent trends in business ownership and performance (e.g. survival rates, sales, employment, payroll, profits and industry) from these datasets is contained in Fairlie and Robb (2008).

Entrepreneurship, Self-Employment and Business Data: An Introduction to Several Large, Nationally-Representative Datasets

Only a few large, nationally-representative datasets include information on both the owner and the business. We briefly describe several of the most respected and up-to-date sources of data on entrepreneurs, the self-employed, and small businesses. More information including estimates of recent trends in business ownership and performance (e.g. survival rates, sales, employment, payroll, profits and industry) from these datasets is contained in Fairlie and Robb (2008).

Impact of Globalization on Social Mobility in Japan and Korea: Focusing on Middle Classes in Fluid Societies*

Abstract: We argue that the social mobility of the Japanese middle classes is becoming closer to that of their Korean counterparts thanks to their increasing exposure to globalization. Globalization upsets the balance between transaction costs and opportunity costs of Japanese economic institutions such as Japanese management practices and the long‐term relationship between the principal contractor and its subcontractors (the shitauke relationship). As a result, it makes social mobility of the new and old middle classes, which have been protected by such institutions, more fluid. Thus we make this argument based on the assumption that the Korean middle classes have already been exposed to globalization and thus are more mobile than their Japanese counterparts. Then we test its empirical validity by analyzing absolute and relative mobility of the middle classes in the two societies with national representative data sets assembled in Japan in 1975, 1985 and 1995 and in Korea in 1990. The results of the analysis show: (1) that the Korean middle classes are more fluid than their Japanese counterparts; and (2) that globalization has affected the social mobility of the old middle class much more than that of the new middle class in Japan. The second finding implies that Japanese management customs that have protected a certain portion of the new middle class are less affected by globalization than the institutions that have protected the old middle class. In other words, the practices have a stronger inertia of institution.

Losing Work, Moving on: International Perspectives on Worker Displacement

This volume presents a collaborative effort by 22 labor economists who examine worker displacement and the attempts to address it in 10 industrialized countries. Using large nationally-representative data sets and detailed policy analysis, the authors focus on two key questions related to worker displacement: 1) whether the experiences of displaced workers in the Untied States, and the patterns of experiences across workers, echo patterns seen in other developed countries, and 2) what can be learned, both from the similarities and from the differences across countries?

Family resources and children's academic performance

This study examines the critical factors that determine children's performance in school with the national representative data set (NSFH) wave I and wave II. The result confirms previous conclusions based on the human capital theory and other frameworks. The article pays special attentions to the effect of different types of family structure on the children's educational performance.

Guns, Drugs and Juvenile Crime: Evidence from a Panel of Siblings and Twins

Using a nationally-representative panel data set of U.S. high school students (AddHealth data) that contains a relatively large sample of siblings and twins, the paper investigates the impacts of gun availability at home and individual drug use on robbery, burglary, theft and damaging property for juveniles. Using a variety of fixed-effects models that exploit variations over time and between siblings and twins, the results show that gun availability at home increases the propensity to commit crime by about two percentage points for juveniles but has no impact on damaging property. The results indicate that it is unlikely that gun availability is merely a measure of the unobserved home environment because gun availability does not influence other risky or bad behaviors of juveniles such as smoking, drinking and fighting, being expelled from school, lying, and having sex. No support is found for the hypothesis that gun availability decreases the propensity for being victimized. In fact, the results show that having access to guns increases the probability of being cut or stabbed by someone and of someone pulling a knife or gun on the juvenile. Estimates obtained from models that exploit variations over time and between siblings and twins indicate that drug use has a significant impact on the propensity to commit crime. We find that the median impact of cocaine use on the propensity to commit various types of crimes is 11 percentage points. The impact of using inhalants or other drugs is an increase in the propensity to commit crime by 7 and 6 percentage points, respectively.