Researchers are combining self-reports from mobile surveys with passive data collection using sensors and apps on smartphones increasingly more often. While smartphones are commonly used in some groups of individuals, smartphone penetration is significantly lower in other groups. In addition, different operating systems (OSs) limit how mobile data…

The recent article by Nieuwoudt, Dickie, Coetsee, Engelbrecht and Terblanche (2019) entitled "Age- and education-related effects on cognitive functioning in Colored South African women" published in the journal Aging, Neuropsychology, and Cognition, attracted considerable negative attention, leading to its official withdrawal from…

The present study aimed to identify the scientific research obstacles facing faculty members in the College of Education at Princess Nora bint Abdul Rahman University (PNU) and to determine the differences in the obstacles according to age, academic rank, scientific specialty, marital status, number of completed studies, and time since the last…

Purpose: The purpose of this study was to investigate the characteristics of missing physical activity (PA) data of children and youth. Method: PA data from the Chinese City Children and Youth Physical Activity Study ("N" = 2,758; 1,438 boys and 1,320 girls; aged 9-17 years old) were used for the study. After the data were sorted by the…

In the context of "academic momentum," a longitudinal study of university students (N = 904) showed high school achievement and ongoing university achievement predicted subsequent achievement through university. However, the impact of high school achievement diminished, while additive effects of ongoing university achievement continued.…

This paper re-considers some of the evidence for low and declining social mobility in Britain, showing that one study based on a re-analysis of cohort figures appears to have had an impact on policy-makers out of all proportion to its scale and rigor. The study claimed to show that the income of parents and children were more closely related for…

Used data from 195 children and 207 adolescents to assess and compare quality of data from those age groups. Interviewer rating of child's behavior, quantity of missing data, and percentage of agreements between parents and children on objective family characteristics all suggest that quality of data was high for children and significantly higher…

This study investigated the effect of different implicit definitions of equality upon children's performance on conservation tasks. In the study, traditional versions of conservation tasks are compared to modified versions in which initial equality is established through verbal counting of discontinuous quantities and measuring of continuous…

Children's ability to recognize unfamiliar faces shows an unusual developmental trend: performance improves from 6 to 11 years, a temporary regression occurs at 12 years, and then recovery leads to adult-level performance. The first study described in this paper tested 80 children 5 to 11 years of age on a face-matching and recognition task.…

Examined the effects of type of distribution and type of response scale on observed integration patterns in five, six, and seven year olds. Findings showed that the effect of two factors, age and type of scale, were significant. (SH)

Global economic transformations have never been as dramatic as in the twentieth century. Most countries have experienced radical changes in the standards of income per capita, technology, fertility, mortality, income inequality and the extent of democracy in the course of the past century. It is the goal of many disciplines--economics, history,…

Differential sex role socialization in Thailand was investigated, and the results were compared with trends observed in the literature based on samples from the United States. Two issues were of particular interest: socialization for aggression and severity of socialization. A sample of 1,896 Thai children, stratified according to sex, grade…

Considers the problems inherent in researching changes in social values and individual perspectives among selected age groups. Asserts that studies aimed at researching both aspects need to be organized as longitudinal studies. Utilizes data taken from a study of East and West Berlin adolescents to reveal specific research problems. (MJP)