Impact of Overt and Subclinical Hypothyroidism on Exercise Tolerance: A Systematic Review

Purpose: This systematic review describes the state of the art of the impact of hypothyroidism on exercise tolerance and physical performance capacity in untreated and treated patients with hypothyroidism. Method: A systematic computer-aided search was conducted using biomedical databases. Relevant studies in English, German, and Dutch, published from the earliest date of each database up to December 2012, were identified. Results: Out of 116 studies, a total of 38 studies with 1,379 patients fulfilled the inclusion criteria. These studies emphasize the multifactorial causes of exercise intolerance in untreated patients by the impact of limitations in different functional systems, with cardiovascular, cardiopulmonary, musculoskeletal, neuromuscular, and cellular metabolic systems acting in concert. Moreover, the studies affirm that exercise intolerance in patients is not always reversible during adequate hormone replacement therapy. As a consequence, despite a defined euthyroid status, there remains a significant group of treated patients with persistent complaints related to exercise intolerance who are suffering from limitations in daily and sport activities, as well as an impaired quality of life. An explanation for this phenomenon is lacking. Only 2 studies investigated the effects of a physical training program, and they showed inconsistent effects on the performance capacity in untreated patients with subclinical hypothyroidism. Conclusions: A limited body of knowledge exists concerning exercise tolerance in treated patients with hypothyroidism, and there is an insufficient amount of quantitative studies on the effects of a physical training program. To enhance exercise and sports participation for this specific group, more research in this forgotten area is warranted.     

Policy Issues Surrounding Processes of Centralization and Decentralization in European Education Systems

Four levels of authority within the educational decision‐making structure in seven European countries and states for primary and lower secondary education are analyzed. Next, the results of an investigation on loci, domains and modes of decision making are presented, indicating a slightly higher degree of school autonomy in England/Wales, the Netherlands and Sweden than in the other countries and states. A more evaluative assessment shows that democratization, market orientation, recession and general aims of improving the quality and equality of education are important background forces in shifting patterns of centralization and decentralization in the investigated countries and states.     

A Gentle Introduction to Bayesian Analysis: Applications to Developmental Research

Bayesian statistical methods are becoming ever more popular in applied and fundamental research. In this study a gentle introduction to Bayesian analysis is provided. It is shown under what circumstances it is attractive to use Bayesian estimation, and how to interpret properly the results. First, the ingredients underlying Bayesian methods are introduced using a simplified example. Thereafter, the advantages and pitfalls of the specification of prior knowledge are discussed. To illustrate Bayesian methods explained in this study, in a second example a series of studies that examine the theoretical framework of dynamic interactionism are considered. In the Discussion the advantages and disadvantages of using Bayesian statistics are reviewed, and guidelines on how to report on Bayesian statistics are provided.     

Parents’ perceptions of secondary school students’ motivation and well-being before and during the COVID-19 lockdown: the moderating role of student characteristics

During the COVID-19 lockdown of spring 2020, Dutch children were being homeschooled. We examined how parents’ (n = 470) perceptions of secondary school students’ (M_age = 14.23 years) need satisfaction, academic motivation and well-being differed before the lockdown (assessed retrospectively) and during the lockdown. Furthermore, we examined the differential impact of the lockdown for different groups of children based on parental educational level, academic track, gender and special educational needs (SEN). Results indicated that students’ motivation and well-being as perceived by parents decreased during the lockdown and this could be explained by decreases in need satisfaction. Most student characteristics did not moderate the effects of the lockdown, except for SEN. The lockdown effects were less negative for children with SEN, especially gifted children and children with behavioural disabilities, than for children without SEN. Results are discussed with regard to their practical implications after the lockdown and for future lockdowns.     

Promoting performance and motivation through a combination of intrinsic motivation stimulation and an extrinsic incentive

Learning Environments Research - During the early stages of secondary education students’ motivation and performance levels decline. This study employed a case study approach to evaluate a...     

The CRC 20 years: An overview of some of the major achievements and remaining challenges

On 20 November 1989, the General Assembly of the United Nations adopted the Convention on the Rights of the Child (CRC). It entered into force on 2 September 1990 and has by now been ratified by 193 States, making the most universally ratified human rights treaty. This overview will present and discuss the impact of this treaty both at the international and the national level, an overview which necessarily has to be limited to some of the developments as a result of the implementation of the CRC.The first part of this paper will be devoted to the impact the CRC had and still has on the setting and development of the international agenda for the promotion and protection of the rights and welfare of children. Special attention will given to developments, achievements, and remaining challenges at the international level with regard to protection of children in armed conflict; prevention and the protection of children from sexual exploitation; and from all forms of violence. This will include some information on the impact of these international developments and actions at the national level, for example, in the area of legislation.The second part will focus on the impact at the national level. Given the wide scope of the CRC this part will be limited to some of the General Measures of Implementation (law reform, national programmes, and independent monitoring) and the General Principles (non-discrimination, best interest, right to be heard) of the CRC. This will be based on reports of States on the implementation of the CRC submitted to the CRC Committee and the Concluding Observations of this Committee and on a number of studies. The conclusion will provide remarks on poverty as one of the major remaining challenges for the implementation of children's rights.     

Can gender differences in educational performance of 15-year-old migrant pupils be explained by societal gender equality in origin and destination countries?

In this paper, we attempt to explain the differences between reading and math scores of migrants’ children (8430 daughters and 8526 sons) in 17 OECD destination countries, coming from 45 origin countries or regions, using PISA 2009 data. In addition to the societal gender equality levels of the origin and destination countries (the gender empowerment measure), we use macro indicators of the origin countries’ educational systems, economic development and religions. We find that migrant daughters from countries with higher gender equality levels obtain higher reading scores than comparable migrant sons do (but this is not the case for math scores). In addition, the higher the gender equality levels in the destination countries, the lower the reading and math scores of both male and female migrants’ children in their destination countries. Further analyses suggest it is the difference between gender equality levels, rather than the levels themselves, that explains the educational performance of both female and male migrant pupils. Our results also show the low gender equality level in Islamic origin countries offers a possible explanation for the low educational performance of Islamic pupils, both male and female. Finally, migrants’ daughters seem to perform slightly better educationally, compared with migrants’ sons.     

Catholic and Protestant Schools,a Better Choice in the Netherlands?

Abstract

This paper focuses on the influence of the sector of education (Catholic, Protestant and public) on the success of their pupils in tertiary education and on the labour market in the Netherlands. In the United States Coleman and Hoffer (1987) could hardly find any differences between the job prospects of pupils of private and public schools, but they did find effects of Catholic secondary education on success in tertiary education. In this study, which is based on longitudinal data of a nationally representative cohort of Dutch primary school leavers in 1965, an analogous comparison is made between the success in tertiary education and the job careers of the pupils who attended Dutch Catholic, Protestant or public secondary education. Differences are found between success in tertiary education and on the labour market of those who attended Catholic, Protestant or public Dutch schools. Pupils of public schools enter the university more often than pupils of private schools and pupils of Catholic schools enter the lower valued tertiary vocational education more often than pupils of Protestant or public schools. Significant effects of school sector were only found for those job characteristics which indicate the kind of job (sector of the job, nature of the job) but not for job characteristics which indicate the level of job. Especially pupils of Protestant schools less often have jobs in the administrative‐financial sector and the medical‐social sector than pupils of non‐Protestant schools. They also less often have jobs which have an exact or social nature. These differences in success in tertiary education and on the labour market are not systematically in favour of the private Catholic and Protestant schools.     

Voluntary and Involuntary Control of Attention in Adolescents Born Very Preterm: A Study of Eye Movements

Very preterm birth is associated with attention deficits that interfere with academic performance. A better understanding of attention processes is necessary to support very preterm born children. This study examined voluntary and involuntary attentional control in very preterm born adolescents by measuring saccadic eye movements. Additionally, these control processes were related to symptoms of inattention, intelligence, and academic performance. Participants included 47 very preterm and 61 full-term born 13-years-old adolescents. Oculomotor control was assessed using the antisaccade and oculomotor capture paradigm. Very preterm born adolescents showed deficits in antisaccade but not in oculomotor capture performance, indicating impairments in voluntary but not involuntary attentional control. These impairments mediated the relation between very preterm birth and inattention, intelligence, and academic performance.