Rule learning and complexity in simulated reading

Three approaches (Rule, Higher-order Unit, Whole Word) to decoding in a simulated reading task were studied. Rule complexity was varied in three experiments employing symbols ($, @, etc.) as stimuli and numbers as responses. CAI was the experimental vehicle. The 110 fifth and sixth grade boys and girls from an inner-city school were randomly assigned to one of the 11 groups in the three experiments. When the rule was simple (one-to-one correspondence) the rule approach was superior, but when the rule was complex (simulation of the final e rule in reading) the higher-order unit approach was superior. Higher-order unit subjects studied examples composed of the fewest stimuli possible to illustrate the rule.     

The origin of the child's idea of learning through practice

To discover qualitatively different ways in which children think of their own learning 149 children aged 3–8 years were interviewed in a pre-school context. One of the most interesting findings concerns the child's increasing awareness of his or her own role in the learning process. It was found that the stage at which children see learning as a result of practice was immediately preceded by one at which they see learning as a result of an incidental activity.     

The concept of ‘originality’ in the Ph.D.: how is it interpreted by examiners?

This paper explores ways in which examiners, supervisors and others interpret the concept of ‘originality’ when evaluating candidates’ achievements in the final Ph.D. examination. It is based on institutional responses to a question in a 2006 discussion paper on doctoral assessment about how universities define originality for the purpose of Ph.D. assessment and what other criteria are used to guide examiners in making judgements in the final examination. The paper also includes emerging findings from the first stages of data generation for a Ph.D. study about how examiners assess the Ph.D. This study involves viva observations and interviews with candidates, examiners, supervisors and independent chairs of vivas. Most participants, irrespective of role, discipline or field, confirmed that ‘originality’ or ‘a contribution to knowledge’ is required for a candidate to pass the Ph.D. examination, and that this criterion is interpreted in a subject-specific context by examiners. The studies suggest that the discipline or field in which the candidate’s topic is situated influences the examiners’ interpretation of ‘originality’ and their expectations of the candidate. However, ‘originality’ is not the only criterion for the Ph.D., and students are also required to demonstrate other achievements to pass the doctorate. The studies show that there is some degree of consistency among examiners in the general criteria used to evaluate the candidate’s thesis and performance in the viva. These findings are discussed in the light of the literature.     

Physical activity, nutrition, screen time and sleep associated with body weight and physical condition in young children

The aim of this cross-sectional study was to explore the possible relationship between (un)healthy behaviour and (over)weight and physical condition in families with young children (4–7 years), in a village (30,000 inhabitants) in the eastern part of the Netherlands, close to Germany. It is one of two pilot studies as a precursor of a cross-border project including six Dutch and six German villages, to counteract physical inactivity and possible future metabolic problems. In total, 459 children of five elementary schools and their parents were included. Parents were requested to fill in a questionnaire on the nutritional, physical, sedentary, and sleeping behaviour of their child. Relevant background characteristics were obtained and lifestyle classifications were made. At school, the children's height and weight (body mass index (BMI)) were measured, as well as their physical condition (two tests) and basic motor abilities (four physical exercise tests). The relationship between the standardized BMI z-scores and physical condition test scores, and nutritional, physical, sedentary and sleeping habits was analysed using independent sample t-test, bivariate correlation analysis and multiple regression analysis. Latent class analysis was used to identify clusters of people based on their nutritional, physical and sleep habits. Of the parents, 376 (82?%) were willing to fill out the questionnaire. High birth weight and a high BMI of the mother and/or father correlated with a higher BMI of the child (ρ?=?0.28, p?<?0.001; ρ?=?0.13, p?=?0.016; and ρ?=?0.23, p?<?0.001, respectively). Daily playing outside, eating small cookies (compared with large cookies) and no sleeping problems (no waking up during the night) were related to low BMI levels (no overweight) [ρ?=???0.14, p?=?0.005; ρ?=???0.12, p?=?.020; t(364)?=?1.81, p?=?0.072 (trend), respectively]. Daily playing outside (frequency and duration) and being a member of a sports club were related to positive scores on the physical condition tests [ρ?=?0.20, p?<?0.001; t(365)?=???2.99, p?=?0.003, respectively]. High levels of television (TV) watching and general sleeping problems were related to a less optimal physical condition [ρ?=???0.09, p?=?0.076 (trend); and ρ?=???0.10, p?=?0.059 (trend), respectively]. A latent class analysis revealed three clusters: 46?% of the sample belonged to the ‘healthy group’ concerning nutrition, sedentary lifestyle and TV/personal computer (PC) use; 17?% to the ‘less healthy’ group and 37?% to a group with nutrition and physical activity habits close to the healthy group, but with low conditional probabilities for the sleeping items. Conducting a pilot study before the start of a binational intervention study gives a blueprint for the final questionnaire, and clues for tailored interventions in the schools, as proposed in the approach of ‘Gesunde Kinder in gesunden Kommunen’ (GKGK). The results of a latent class analysis underscore that interventions should exist of a multi-component strategy, focusing on promoting physical activity, healthy nutrition habits and appropriate sleep.     

The influence of context,timing, and duration of risk experiences for the passage from childhood to midadulthood

This study investigated the long-term effects of social disadvantage on academic achievement and on subsequent attainments in adulthood. The study drew on data collected for over 30,000 individuals born 12 years apart, following their development from birth to adulthood. The pathways that link social disadvantage to individual development across the life course were analyzed in a developmental-contextual systems model. The results showed that the influence of risk factors associated with socioeconomic disadvantage depended on the developmental stage of the individual, the experience of long-term or continuous disadvantage, and the overall sociohistorical context. Early risk had a moderate influence on the formation of individual competences. The greatest risk was associated with persisting and accumulating experiences of socioeconomic disadvantage throughout childhood and adolescence. Material conditions improved for the later-born cohort, yet pervasive social inequalities existed that affected outcomes during childhood and were consequently reflected in adult attainment.