Facing the Past: Facing the Future: History,Memory, Literature. Anne‐Christine Hoff,editor. Istanbul,Turkey: Bahçeşehir University Press, 2011.     

Laurence Raw 《Journal of American culture (Malden, Mass. : 2003)》2012,35(4):372-373

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Thinking strategically about sport events     

Laurence Chalip  Sheranne Fairley 《Journal of Sport Tourism》2019,23(4):155-158

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Presidents and the Dissolution of the Union: Leadership Style from Polk to Lincoln Fred I. Greenstein. Princeton,NJ: Princeton University Press, 2013.     

Laurence Raw 《Journal of American culture (Malden, Mass. : 2003)》2014,37(3):372-373

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Effects of caffeine on time trial performance in sedentary men     

Laurence G  Wallman K  Guelfi K 《Journal of sports sciences》2012,30(12):1235-1240

Abstract It is not known if ergogenic effects of caffeine ingestion in athletic groups occur in the sedentary. To investigate this, we used a counterbalanced, double-blind, crossover design to examine the effects of caffeine ingestion (6 mg?·?kg(-1) body-mass) on exercise performance, substrate utilisation and perceived exertion during 30 minutes of self-paced stationary cycling in sedentary men. Participants performed two trials, one week apart, after ingestion of either caffeine or placebo one hour before exercise. Participants were instructed to cycle as quickly as they could during each trial. External work (J?·?kg(-1)) after caffeine ingestion was greater than after placebo (P?=?0.001, effect size [ES]?=?0.3). Further, heart rate, oxygen uptake and energy expenditure during exercise were greater after caffeine ingestion (P?=?0.031, ES?=?0.4; P?=?0.009, ES?=?0.3 and P?=?0.018, ES?=?0.3; respectively), whereas ratings of perceived exertion and respiratory exchange ratio values did not differ between trials (P?=?0.877, ES?=?0.1; P?=?0.760, ES?=?0.1; respectively). The ability to do more exercise after caffeine ingestion, without an accompanying increase in effort sensation, could motivate sedentary men to participate in exercise more often and so reduce adverse effects of inactivity on health.  相似文献   

Short report: Recovery of jump performance after a simulated cricket batting innings     

Houghton L  Dawson B 《Journal of sports sciences》2012,30(10):1069-1072

The time-course of physical recovery was determined after a 2-h 20-min, simulated cricket batting innings. Several vertical jump measures were assessed before (baseline), immediately after, 24 h after and 48 h after simulated batting. Six, male, academy cricketers (20 ± 2 years) completed a previously developed simulated batting innings (BATEX) at an outdoor net facility. At each assessment point, participants completed countermovement-jumps, squat-jumps and 5-repeated reactive-jumps on a contact mat. Compared with baseline, countermovement flight time was similar immediately after, but decreased 24 h after batting (-3.0 ± 1.8%, p < 0.05, effect size [ES] ± 90% confidence interval [CI]: -1.38 ± 0.52). At 48 h post, countermovement-jump flight time was similar to baseline. A similar pattern occurred in the squat-jump and the decrease in squat-jump flight time 24 h after simulated batting approached significance (p = 0.053, ES ± CI -0.80 ± 0.51). The 5-repeated reactive-jump measures (flight time, contact time and reactive-strength-index) did not decrease after simulated batting (p > 0.05), but there were moderate effect sizes calculated (0.64-0.96). These findings support the continued use of countermovement flight time to assess recovery in cricket, since full recovery of jump performance occurred 48 h after a simulated, prolonged and high intensity-batting century.  相似文献   

Age Differences in Future Orientation and Delay Discounting   总被引：1，自引：0，他引：1  

Laurence Steinberg  Sandra Graham  Lia O'Brien  Jennifer Woolard  Elizabeth Cauffman  and Marie Banich 《Child development》2009,80(1):28-44

Age differences in future orientation are examined in a sample of 935 individuals between 10 and 30 years using a delay discounting task as well as a new self-report measure. Younger adolescents consistently demonstrate a weaker orientation to the future than do individuals aged 16 and older, as reflected in their greater willingness to accept a smaller reward delivered sooner than a larger one that is delayed, and in their characterizations of themselves as less concerned about the future and less likely to anticipate the consequences of their decisions. Planning ahead, in contrast, continues to develop into young adulthood. Future studies should distinguish between future orientation and impulse control, which may have different neural underpinnings and follow different developmental timetables.  相似文献   

Nonstadard dialect and literacy: An in-service project in newfoundland     

Laurence Walker  Ishmael Baksh 《Interchange》1975,6(3):4-10

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Teacher absenteeism — What are the realities?     

Laurence R. Miller 《The Australian Educational Researcher》1985,12(3):29-41

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Revisiting the impact of part-time work on adolescent adjustment: distinguishing between selection and socialization using propensity score matching     

Monahan KC  Lee JM  Steinberg L 《Child development》2011,82(1):96-112

The impact of part-time employment on adolescent functioning remains unclear because most studies fail to adequately control for differential selection into the workplace. The present study reanalyzes data from L. Steinberg, S. Fegley, and S. M. Dornbusch (1993) using multiple imputation, which minimizes bias in effect size estimation, and 2 types of propensity score matching, to account for selection effects. In this sample (N = 1,792; Grades 10-11, M = 16.26), youth who begin working more than 20 hr per week evince declines in school engagement and increases in substance use and delinquency compared with youth who remain unemployed. Conversely, working 20 hr or less a week has negligible effects, positive or negative, on academic, psychological, or behavioral outcomes.  相似文献   

Family rearing antecedents of pubertal timing   总被引：5，自引：2，他引：3  

Belsky J  Steinberg LD  Houts RM  Friedman SL  DeHart G  Cauffman E  Roisman GI  Halpern-Felsher BL  Susman E;NICHD Early Child Care Research Network 《Child development》2007,78(4):1302-1321

Two general evolutionary hypotheses were tested on 756 White children (397 girls) studied longitudinally: (1) rearing experiences would predict pubertal timing; and (2) children would prove differentially susceptible to rearing. Analysis of pubertal measurements, including some based on repeated physical assessments, showed that mothering and fathering, earlier and later in childhood, predicted pubertal development, but only for girls, with negative parenting appearing most influential; maternal harsh control predicted earlier menarche. Rearing effects varied by infant negative emotionality, proving stronger (and opposite) for girls who in infancy were lower rather than higher in negativity. Maternal menarche, controlled in all analyses, was a stronger predictor than rearing. Findings are discussed in terms of theory development, genetic and nutritional influences, and sample restrictions.  相似文献