Affirmation effects on math scores: The importance of high school track

Stereotype threat has been shown to affect academic performance of minority racial groups. Minority girls may experience the burdens of both race and gender - a “double bind” theorized to affect the underrepresentation of women in STEM fields. A randomized controlled trial focused on alleviating stereotype threat in three high schools in a large U.S. metro demonstrates the effects of affirmative writing interventions, which have previously shown positive effects for minority and female students. Results indicate effects for these groups were insignificant. However, results also show that student track is highly significant at p < 0.001, and interactive analyses suggest that the intervention may help alleviate threat for higher-achieving students.     

Changing effects of family background on transitions to secondary education in the Netherlands: Consequences of educational expansion and reform

Recent developments in educational transitions research suggest a decomposition of qualitative dimensions within educational levels that are (nearly) universal. However, research on long-term trends of social stratification in the structurally tracked educational system of the Netherlands has not been published previously. In the Netherlands, the secondary educational level is divided into four hierarchical tracks which each lead to different options for subsequent educational decisions. A rapid increase of participation in the higher tracks over time however, may have changed the background-specific distribution of early track placement. This paper improves upon previous research on educational inequality by incorporating a long-term perspective into tracking research. The secondary level of the Dutch educational system is decomposed into its four tracks, using a time frame that covers cohorts that entered secondary education between 1946 and 1998. The application of multinomial logit regressions reveals that the choice of a secondary track is strongly depending on social background features, measured as education of the parents and occupational status of the father. We found linear downward trends of effects for fathers’ occupation in the intermediate tracks for the cohorts that entered secondary education between WWII and the 90s. The effects of parental education also decrease after WWII, but the trend is curvilinear and not enduring. Unexpectedly, the effects almost reach their previous level in the youngest cohort. Our results furthermore suggest that a controversial reform of the educational system in 1968 neither triggered nor accelerated equalization of secondary education, although it resulted in a growth of participation in senior general education (HAVO).     

The electronic eye: emerging surveillant practices in social work with children and families

Given the rise of a ‘surveillance society’ or ‘surveillance state’, this article examines the evolution of new surveillant practices which are targeted at children in general, but also particular groups of children who are frequently seen as ‘troublesome’, even threats to the social order. In England for example, there has been an emerging preoccupation with ‘identifying’, ‘profiling’, and ‘tracking’ the potentially criminal young. Furthermore, other major changes are likely to be introduced in the area of child welfare and child protection. Important here is the New Labour administration’s plan to introduce ‘information hubs’ which will electronically log details on children and families. It is argued that social work and the social professions, throughout Europe, need to critically analyse developments such as this and have their responses informed by international discourses founded on civil and human rights.     

Radio Frequency Identification: A Panacea for Governments?

Radio frequency identification (RFID) has been used to improve business supply chain management for over 35 years. As often happens, private sector technology migrates to the public sector where it is adapted for use. RFID use in governments is spreading far and wide at the federal and state levels with virtually no debate or performance analyses to inform adoption decisions. Implementation of RFID technology impacts government efficiency and effectiveness in many areas. Data show that most RFID applications promise enhanced effectiveness but also pose increased costs. A model is constructed to assist state and local managers in choosing to adopt RFID and to discern the status and impacts of this bold new innovation.

Social Workers’ and Students’ Attitudes toward Electronic Tracking of People with Alzheimer's Disease

Global Positioning Systems (GPS) have recently been employed to help monitor persons with dementia. While the advantages of such technologies are clear, making use of them raises a number of ethical dilemmas. Considering the fact that social workers may be called upon to assist families in making decisions regarding the use of GPS, their attitudes on this issue are important. Fifty-five social workers and 61 social work students completed a questionnaire including: attitudes toward tracking, knowledge of Alzheimer's Disease (AD) symptoms, familiarity with persons who have AD, and ratings of who should be involved in the decision-making process regarding GPS use. Findings showed that the highest-scored attitude factor was respecting elders’ autonomy, while the lowest-scored factor opposed GPS use. The elderly and their spouses were rated as important decision-makers regarding the use of GPS. Knowledge of AD and respecting autonomy were negatively correlated. Students gave a higher rating to respecting elders’ autonomy than the social workers. Social workers gave a higher rating to the importance of a multidisciplinary team. Implications for social work education are discussed including recommendations for person-centered AD care on the one hand, and the need to balance the interests of the individual and the family on the other.     

Predicting the Daily Covariance Matrix for S&P 100 Stocks Using Intraday Data—But Which Frequency to Use?

This article investigates the merits of high-frequency intraday data when forming mean-variance efficient stock portfolios with daily rebalancing from the individual constituents of the S&P 100 index. We focus on the issue of determining the optimal sampling frequency as judged by the performance of these portfolios. The optimal sampling frequency ranges between 30 and 65 minutes, considerably lower than the popular five-minute frequency, which typically is motivated by the aim of striking a balance between the variance and bias in covariance matrix estimates due to market microstructure effects such as non-synchronous trading and bid-ask bounce. Bias-correction procedures, based on combining low-frequency and high-frequency covariance matrix estimates and on the addition of leads and lags do not substantially affect the optimal sampling frequency or the portfolio performance. Our findings are also robust to the presence of transaction costs and to the portfolio rebalancing frequency.     

Infinite Exchange Problems

This paper considers a range of infinite exchange problems, including one recent example discussed by Barrett and Arntzenius, and propose a general taxonomy based on cardinality considerations and the possibility of identifying and tracking the units of exchange.     

Adapting an evidence-based model to retain adolescent study participants in longitudinal research

Maintaining contact with and collecting outcome data from adolescent study participants can present a significant challenge for researchers conducting longitudinal studies. Establishing an organized and effective protocol for participant follow-up is crucial to reduce attrition and maintain high retention rates. This paper describes our methods in using and adapting the evidence-based Engagement, Verification, Maintenance, and Confirmation (EVMC) model to follow up with adolescents 6 and 12 months after implementation of a health program. It extends previous research by focusing on two key modifications to the model: (1) the central role of cell phones and texting to maintain contact with study participants throughout the EVMC process and, (2) use of responsive two-way communication between staff and participants and flexible administration modes and methods in the confirmation phase to ensure that busy teens not only respond to contacts, but also complete data collection. These strategies have resulted in high overall retention rates (87–91%) with adolescent study participants at each follow-up data collection point without the utilization of other, more involved tracking measures. The methods and findings presented may be valuable for other researchers with limited resources planning for or engaged in collecting follow-up outcome data from adolescents enrolled in longitudinal studies.     

Incomplete equalization: The effect of tracking in secondary education on educational inequality

This paper tests whether the existence of vocationally oriented tracks within a traditionally academically oriented upper education system reduces socioeconomic inequalities in educational attainment. Based on a statistical model of educational transitions and data on two entire cohorts of Danish youth, we find that (1) the vocationally oriented tracks are less socially selective than the traditional academic track; (2) attending the vocationally oriented tracks has a negative effect on the likelihood of enrolling in higher education; and (3) in the aggregate the vocationally oriented tracks improve access to lower-tier higher education for low-SES students. These findings point to an interesting paradox in that tracking has adverse effects at the micro-level but equalizes educational opportunities at the macro-level. We also discuss whether similar mechanisms might exist in other educational systems.