Results 11 to 20 of about 2,759,616 (342)

Waste Reduction Strategies: Factors Affecting Talent Wastage and the Efficacy of Talent Selection in Sport

open access: yesFrontiers in Psychology, 2020
Coaches are faced with the difficult task of identifying and selecting athletes to their team. Despite its widespread practice in sport, there is still much to learn about improving the identification and selection process.
Kathryn Johnston, Joseph Baker
doaj   +1 more source

Credible Mendelian Randomization Studies in the Presence of Selection Bias Using Control Exposures

open access: yesFrontiers in Genetics, 2021
Selection bias is increasingly acknowledged as a limitation of Mendelian randomization (MR). However, few methods exist to assess this issue. We focus on two plausible causal structures relevant to MR studies and illustrate the data-generating process ...
Zhao Yang   +3 more
doaj   +1 more source

Reward predictions bias attentional selection

open access: yesFrontiers in Human Neuroscience, 2013
Attention selects stimuli for perceptual and cognitive processing according to an adaptive selection schedule. It has long been known that attention selects stimuli that are task relevant or perceptually salient.
Brian August Anderson   +2 more
doaj   +1 more source

Variable Selection Bias in Classification Trees Based on Imprecise Probabilities [PDF]

open access: yes, 2005
Classification trees based on imprecise probabilities provide an advancement of classical classification trees. The Gini Index is the default splitting criterion in classical classification trees, while in classification trees based on imprecise ...
Strobl, Carolin
core   +3 more sources

Natural selection. III. Selection versus transmission and the levels of selection [PDF]

open access: yes, 2011
George Williams defined an evolutionary unit as hereditary information for which the selection bias between competing units dominates the informational decay caused by imperfect transmission.
Frank, Steven A.
core   +2 more sources

Understanding COVID-19 Vaccine Effectiveness against Death Using a Novel Measure: COVID Excess Mortality Percentage

open access: yesVaccines, 2023
COVID-19 vaccines have saved millions of lives; however, understanding the long-term effectiveness of these vaccines is imperative to developing recommendations for booster doses and other precautions. Comparisons of mortality rates between more and less
Vladimir Atanasov   +9 more
doaj   +1 more source

Statistical Sources of Variable Selection Bias in Classification Tree Algorithms Based on the Gini Index [PDF]

open access: yes, 2005
Evidence for variable selection bias in classification tree algorithms based on the Gini Index is reviewed from the literature and embedded into a broader explanatory scheme: Variable selection bias in classification tree algorithms based on the Gini ...
Strobl, Carolin
core   +2 more sources

Who needs selection bias?

open access: yesScandinavian Journal of Work, Environment & Health, 2014
Present day low participation rates in certain parts of research is concerning. It is not unusual that half (or even more) of those invited to participate in a research project decline the invitation.
Jørn Olsen
doaj   +1 more source

Relative age effect on student-athletes of Mato Grosso state (Brazil) participating in the National School Games depending on sex, age category, and sport type

open access: yesHuman Movement, 2022
Purpose The relative age effect (RAE) is a widely reported phenomenon in elite sports context. However, little is known about its occurrence in other levels of practice, such as school sports.
Henrique de Oliveira Castro   +7 more
doaj   +1 more source

Occupational segregation, selection effects and gender wage differences: evidence from urban Colombia

open access: yesApuntes del CENES, 2014
This paper assesses the effects of occupational segregation on the gender wage gap in urban Colombia between 1986 and 2000. The  empirical methodology involves a two step procedure where by the occupational distributions ofworkers by gender aremodelled ...
Jairo Guillermo Isaza Castro
doaj   +1 more source

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