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Dive into the research topics where Laura Jonker is active.

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Featured researches published by Laura Jonker.


Journal of Sports Sciences | 2010

Differences in self-regulatory skills among talented athletes: The significance of competitive level and type of sport

Laura Jonker; Marije T. Elferink-Gemser; Chris Visscher

Abstract Research has shown that talented athletes outscore their mainstream peers on the basis of self-regulation. Although valuable, this does not tell us more about the distinction between good athletes and the best, which is a prerequisite in talent development. Therefore, we examined the self-regulatory skills of 222 male and female talented athletes aged 12–16 years as a function of competitive sport level (junior international or junior national athletes) and type of sport (individual or team sports). Multivariate analyses of covariance in combination with a discriminant function analysis revealed that “reflection” distinguishes between athletes at the highest levels of excellence. Furthermore, athletes playing individual sports had higher scores on “planning” and “effort” than team sport athletes, highlighting the importance of differences between types of sport. In conclusion, we emphasize the importance of reflection as a self-regulatory skill. Reflection facilitates the development of sport-specific characteristics, which may vary by type of sport. This means that an advanced sense of reflection may help talented athletes to acquire desirable characteristics during their “talent” years to ultimately reach adult elite levels of competition.


High Ability Studies | 2009

Talented athletes and academic achievements : a comparison over 14 years

Laura Jonker; Marije T. Elferink-Gemser; Chris Visscher

The purpose of this study was to gain insight into the academic achievements of 200 talented athletes in 1992/1993 and 200 in 2006/2007, aged 14–16 years. When compared with the national average, the athletes in 2006/2007 attended pre‐university classes more often (χ2 = 57.001, p<.05). Of the 2006/2007 athletes, a higher percentage participated in pre‐university programs compared with that of athletes in 1992/1993 (χ2 (1, n = 400) = 32.003, p<.05), whereas the national averages showed stability (χ2 = .325, p>.05). Investigating self‐regulation appears relevant, as talented athletes may have developed a high sense of self‐regulation in sports, which may enable them to optimally profit from their self‐regulatory skills in their academics.


International journal of sport and exercise psychology | 2012

Measuring self-regulation in a learning context: Reliability and validity of the Self-Regulation of Learning Self-Report Scale (SRL-SRS)

Tynke Toering; Marije T. Elferink-Gemser; Laura Jonker; Marieke J. G. van Heuvelen; Chris Visscher

Self-regulation of learning has been suggested to refer to self-directed processes that help individuals learn more effectively. No instrument is available to date examining self-regulation of learning as a relatively stable individual attribute. Therefore, based on Zimmermans self-regulated learning theory, we composed the Self-Regulation of Learning Self-Report Scale (SRL-SRS), which comprises six subscales: planning, self-monitoring, evaluation, reflection, effort and self-efficacy. This study examined the reliability and validity of the SRL-SRS. Two confirmatory factor analyses were conducted involving 601 and 600 adolescents aged 11 to 17 years (M age = 13.9, SD = 1.3). The first confirmatory factor analysis revealed that an adjusted six-factor model described the observed data and content of factors best, which was cross-validated in the second sample of adolescents. The relative and absolute test-retest reliability was satisfactory. In conclusion, this study showed that the SRL-SRS is a reliable instrument, and supported its content and construct validity.


Journal of Sports Sciences | 2010

Academic performance and self-regulatory skills in elite youth soccer players

Laura Jonker; Marije T. Elferink-Gemser; Tynke Toering; James Lyons; Chris Visscher

Abstract Although elite athletes have been reported to be high academic achievers, many elite soccer players struggle with a stereotype of being low academic achievers. The purpose of this study was to compare the academic level (pre-university or pre-vocational) and self-regulatory skills (planning, self-monitoring, evaluation, reflection, effort, and self-efficacy) of elite youth soccer players aged 12–16 years (n = 128) with those of 164 age-matched controls (typical students). The results demonstrate that the elite youth soccer players are more often enrolled in the pre-university academic system, which means that they are high academic achievers, compared with the typical student. The elite players also report an increased use of self-regulatory skills, in particular self-monitoring, evaluation, reflection, and effort. In addition, control students in the pre-university system had more highly developed self-regulatory skills than those in the pre-vocational system, whereas no difference was observed within the soccer population. This suggests that the relatively stronger self-regulatory skills reported by the elite youth soccer players may be essential for performance at the highest levels of sport competition and in academia.


Medical Teacher | 2016

Self-regulated learning and academic performance in medical education

Susanna M. Lucieer; Laura Jonker; Chris Visscher; Remy M. J. P. Rikers; Axel P. N. Themmen

Abstract Content: Medical schools aim to graduate medical doctors who are able to self-regulate their learning. It is therefore important to investigate whether medical students’ self-regulated learning skills change during medical school. In addition, since these skills are expected to be helpful to learn more effectively, it is of interest to investigate whether these skills are related to academic performance. Methods: In a cross-sectional design, the Self-Regulation of Learning Self-Report Scale (SRL-SRS) was used to investigate the change in students’ self-regulated learning skills. First and third-year students (N = 949, 81.7%) SRL-SRS scores were compared with ANOVA. The relation with academic performance was investigated with multinomial regression analysis. Results: Only one of the six skills, reflection, significantly, but positively, changed during medical school. In addition, a small, but positive relation of monitoring, reflection, and effort with first-year GPA was found, while only effort was related to third-year GPA. Conclusions: The change in self-regulated learning skills is minor as only the level of reflection differs between the first and third year. In addition, the relation between self-regulated learning skills and academic performance is limited. Medical schools are therefore encouraged to re-examine the curriculum and methods they use to enhance their students’ self-regulated learning skills. Future research is required to understand the limited impact on performance.


Advances in Health Sciences Education | 2016

The development of self-regulated learning during the pre-clinical stage of medical school: a comparison between a lecture-based and a problem-based curriculum

Susanna M. Lucieer; Jos N. van der Geest; Silvana Maria Elói-Santos; Rosa M D de Faria; Laura Jonker; Chris Visscher; Remy M. J. P. Rikers; Axel P. N. Themmen

Society expects physicians to always improve their competencies and to be up to date with developments in their field. Therefore, an important aim of medical schools is to educate future medical doctors to become self-regulated, lifelong learners. However, it is unclear if medical students become better self-regulated learners during the pre-clinical stage of medical school, and whether students develop self-regulated learning skills differently, dependent on the educational approach of their medical school. In a cross-sectional design, we investigated the development of 384 medical students’ self-regulated learning skills with the use of the Self-Regulation of Learning Self-Report Scale. Next, we compared this development in students who enrolled in two distinct medical curricula: a problem-based curriculum and a lectured-based curriculum. Analysis showed that more skills decreased than increased during the pre-clinical stage of medical school, and that the difference between the curricula was mainly caused by a decrease in the skill evaluation in the lecture-based curriculum. These findings seem to suggest that, irrespective of the curriculum, self-regulated learning skills do not develop during medical school.


Journal of Sports Sciences | 2017

Laterality related to the successive selection of Dutch national youth soccer players

Jan Verbeek; Marije T. Elferink-Gemser; Laura Jonker; Barbara C. H. Huijgen; Chris Visscher

ABSTRACT In the general population, estimates of left-foot preference are around 20%. In soccer, specific tasks create positional demands, requiring 40% of the players to be left-footed. Whether and how this is related to the selection of players is unknown. To examine the successive selection of soccer players for Dutch national youth teams in relation to foot preference, 280 youth players (age = 16.2 ± 1.08 years) were monitored from the U16 through the U19 teams over the last 5 years. No difference in successive selection between left- and right-footed players was found (p < 0.05). Regardless of foot preference, more than 50% of the selected players were deselected out of a national youth team after 2 years. On average, 31% of the national youth players were left-footed, which is higher than expected, based on population estimates (χ2 (1) = 37.49, p < 0.001, w = 0.27). However, there was an under-representation of left-footed players, based on expected positional demands (i.e., attack, midfield, defence) (χ2 (1) = 16.83, p < 0.001, w = 0.18). The conclusion is that left-foot preference increases the probability of selection in Dutch national youth soccer teams.


Archive | 2014

Reading and writing the game: tactical skills in team sports

Chris Visscher; M.T. Elferink-Gemser; Rianne Kannekens; Laura Jonker; Yvonne Tromp; Barbara C. H. Huijgen; Tynke Toering

Na medida em que todas as obras da UC Digitalis se encontram protegidas pelo Código do Direito de Autor e Direitos Conexos e demais legislação aplicável, toda a cópia, parcial ou total, deste documento, nos casos em que é legalmente admitida, deverá conter ou fazer-se acompanhar por este aviso. Reading and writing the game: tactical skills in team sports Autor(es): Elferink-Gemser, Marije T; Kannekens, Rianne; Huijgen, Barbara; Tromp, Yvonne; Jonker, Laura; Toering, Tynke; Visscher, Chris Publicado por: Imprensa da Universidade de Coimbra URL persistente: URI:http://hdl.handle.net/10316.2/31710 DOI: DOI:http://dx.doi.org/10.14195/978-989-26-0506-7_11


Journal of Sports Sciences | 2018

The importance and development of ball control and (self-reported) self-regulatory skills in basketball players for different positions

Sanne Cornelia Maria te Wierike; Barbara C. H. Huijgen; Laura Jonker; Marije T. Elferink-Gemser; Chris Visscher

ABSTRACT This study first investigated the importance of ball control and (self-reported) self-regulatory skills in achieving the elite level in basketball. The second aim was to gain insight into the development of, and association between ball control and (self-reported) self-regulatory skills that contribute to achieving the elite level, with taking into account positional differences. Talented male players (N = 73; age 16.56 ± 1.96) completed the STARtest to measure ball control and a questionnaire to measure (self-reported) self-regulation from 2008–2012. Results showed that (self-reported) reflective skills were most important to achieve the elite level (OR = 11.76; P < 0.05). There was no significant improvement in (self-reported) reflection over time for guards, forwards, and centers. Improvement in ball control was evident for guards (r = −0.65; P < 0.05). Furthermore, guards and forwards had better ball control compared to centers (P < 0.01). For those two positions, negative correlations were found between (self-reported) reflection and ball control, i.e., higher reflection was related to better ball control (guards r = −0.19; forwards r = −0.18) in contrast to centers (r = 0.34). It is concluded that (self-reported) reflective skills are important to achieve the elite level, while ball control seems especially important for guards.


Adapted Physical Activity Quarterly | 2010

Reliability and validity of the TGMD-2 in primary-school-age children with visual impairments.

Suzanne Houwen; Esther Hartman; Laura Jonker; Chris Visscher

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Chris Visscher

University Medical Center Groningen

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Marije T. Elferink-Gemser

HAN University of Applied Sciences

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Barbara C. H. Huijgen

University Medical Center Groningen

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Tynke Toering

University Medical Center Groningen

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Axel P. N. Themmen

Erasmus University Rotterdam

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Remy M. J. P. Rikers

Erasmus University Rotterdam

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Susanna M. Lucieer

Erasmus University Rotterdam

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Chris Visscher

University Medical Center Groningen

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E. J. Yvonne Tromp

University Medical Center Groningen

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