York University

About: York University is a education organization based out in Toronto, Ontario, Canada. It is known for research contribution in the topics: Population & Poison control. The organization has 18899 authors who have published 43357 publications receiving 1568560 citations.

First-Year Students' Adjustment to University Life as a Function of Relationships with Parents.

Abstract: One understudied aspect of first-year students’transition to university is their relationship with parents. This study investigates the contributions that perceived parenting style, current relationships with parents, and psychological well-being variables make toward perceived overall adjustment to university, from both socio/emotional adaptation perspectives and actual academic achievement. Data were collected from a sample of 408 (116 males and 292 females) first-year students attending university in a large metropolitan Canadian city. Results indicated that mutual reciprocity and discussion with parents, as well as the psychological well-being variables, have direct links to adjustment to university. There was an indirect, positive relationship between authoritative parenting and adaptation variables. Furthermore, the predictor variables differed by both gender and outcome measures. Interpretation of these results, their congruence within the context of the theoretical frameworks, and practical implic...

Improved luminosity determination in pp collisions at root s=7 TeV using the ATLAS detector at the LHC

Abstract: The luminosity calibration for the ATLAS detector at the LHC during pp collisions at root s = 7 TeV in 2010 and 2011 is presented. Evaluation of the luminosity scale is performed using several luminosity-sensitive detectors, and comparisons are made of the long-term stability and accuracy of this calibration applied to the pp collisions at root s = 7 TeV. A luminosity uncertainty of delta L/L = +/- 3.5 % is obtained for the 47 pb(-1) of data delivered to ATLAS in 2010, and an uncertainty of delta L/L = +/- 1.8 % is obtained for the 5.5 fb(-1) delivered in 2011.

Narrative Research in TESOL: Narrative Inquiry: More Than Just Telling Stories

Abstract: TESOL Quarterly publishes brief commentaries on aspects of qualitative and quantitative research. For this issue, we asked two researchers to discuss narrative research in TESOL.

Statistical Criteria for Selecting the Optimal Number of Untreated Subjects Matched to Each Treated Subject When Using Many-to-One Matching on the Propensity Score

Abstract: Propensity-score matching is increasingly being used to estimate the effects of treatments using observational data. In many-to-one (M:1) matching on the propensity score, M untreated subjects are matched to each treated subject using the propensity score. The authors used Monte Carlo simulations to examine the effect of the choice of M on the statistical performance of matched estimators. They considered matching 1-5 untreated subjects to each treated subject using both nearest-neighbor matching and caliper matching in 96 different scenarios. Increasing the number of untreated subjects matched to each treated subject tended to increase the bias in the estimated treatment effect; conversely, increasing the number of untreated subjects matched to each treated subject decreased the sampling variability of the estimated treatment effect. Using nearest-neighbor matching, the mean squared error of the estimated treatment effect was minimized in 67.7% of the scenarios when 1:1 matching was used. Using nearest-neighbor matching or caliper matching, the mean squared error was minimized in approximately 84% of the scenarios when, at most, 2 untreated subjects were matched to each treated subject. The authors recommend that, in most settings, researchers match either 1 or 2 untreated subjects to each treated subject when using propensity-score matching.

The Balloon Analogue Risk Task (BART) differentiates smokers and nonsmokers.

Abstract: In trying to better understand why individuals begin and continue to smoke despite the obvious health consequences, researchers have become interested in identifying relevant personality variables, such as risk taking. In this study, the authors compared the ability of 2 behavioral measures of risk taking, the Bechara Gambling Task (BGT) and the Balloon Analogue Risk Task (BART), to differentiate smokers and nonsmokers. Self-report measures of impulsivity and sensation seeking were taken for comparison with the 2 behavioral risk-taking tasks. Results indicate that behavior on the BART, and not the BGT, was related to smoking status. Further, when considered in a logistic regression analysis, only the Sensation Seeking total score and the BART score contributed uniquely to the differentiation of smokers and nonsmokers.