FATHER PLAY: IS IT SPECIAL?

Both mothers and fathers play with their children, but research on parent–child play interactions is conducted with mothers three times more often than it is with fathers. The articles in this special issue address this gap by focusing on the nature and quality of father–child play, across cultural contexts, and considering whether father play offers something unique and special for early human development, in infancy or early childhood. The studies show that fathers can be just as developmentally supportive as are mothers in terms of being playful and engaged with their children in ways that are related to greater child socioemotional competence, emotion regulation, and vocabulary, and to less aggression, anxiety, and negativity. We encourage future research to examine the cultural influences, family system dynamics, and specificity of timing and types of father–child play in relation to children's developmental competence.     

Career Decision Ambiguity Tolerance Scale: Construction and initial validations

The Career Decision Ambiguity Tolerance Scale (CDAT) measures individual evaluations of and responses to ambiguity encountered in career decision making. It was developed and initially validated through two studies of college students. An exploratory and confirmatory factor analysis consistently showed a three-factor structure for career decision ambiguity tolerance, consisting of preference, tolerance, and aversion. In addition to support for construct validity and subscale reliabilities, the findings also support the scale's incremental validity in predicting career indecision, career decision-making self-efficacy, and career adaptability over and beyond general ambiguity tolerance. The theoretical meaning and practical application of the CDAT were discussed along with its limitations and suggestions for future research.     

Structural model of employee involvement in skill development activity: The role of individual differences

We extend prior research on involvement in employee development activity by including prominent individual difference constructs that have been previously ignored in this area of research. These include two important personality characteristics (conscientiousness and openness to experience), mental ability and goal orientation constructs. We tested both mediated and direct effects of the variables. The sequence of relationships observed in the model was: general personality traits → development domain individual and situational variables → development domain motivational variables → involvement in development. Personality had indirect (mediated) effects on motivational and involvement constructs while goal orientation, as a development domain individual variable, had direct effects on motivational constructs. Mental ability had no effects. The study also replicated core relationships from prior research, but did so using an Internet sample and response medium. The model presented provides the most complete picture of behavior in this area to date. Important implications for advancement of theory, research and practice in the area of employee development behavior are discussed.     

Multiple trajectories of physical aggression among adolescent boys and girls

Latent growth mixture modeling was used to identify discrete patterns of physical aggression from Grades 7 to 11 among a sample of 1,877 youth. Four trajectory classes adequately explained the development of physical aggression in both boys and girls: Low/No Aggression; Persistent High Aggression; Desisting Aggression, characterized by decreasing risk throughout adolescence; and Adolescent Aggression, characterized by low early risk that increases until Grade 9, levels out, and then declines in late adolescence. Girls were less likely than boys were to be in any trajectory besides the Low/No Aggression trajectory. Parental supervision, deviant peer association, academic orientation, impulsivity, and emotional distress at Grade 7 were all strongly associated with trajectory class membership. These associations did not differ by gender. These findings strongly suggest that the processes involved in the development of physical aggression in adolescence operate similarly in boys and girls.     

A preliminary study on the relationship between characteristics of TV content and delayed speech development in young children

Our previous population survey of 18-month-old children suggested an association between delayed language development and heavy TV viewing. We therefore collected all 85 videos described as children's favorites in that questionnaire to examine relationships between the characteristics of habitually viewed videos and language development. In the language delayed group, compared to the non-delayed group, the types of videos preferred more were “realistic animations” and “baby education” and the characteristics of videos were contained few close-ups of characters facing viewers, continued uninterruptedly between stories, had constant movement or transformation of characters, had a high frame rate of animation, and that adults readily kept on watching the videos even with the sound off. These characteristics were seen more in videos the above two types. These findings imply that habitual television/video viewing with characteristics that are not apt to elicit parent–child communication for long hours may affect delayed language development in young children.     

甲状腺激素在脑发育中的作用及临床意义

甲状腺激素在神经系统尤其是脑的发育和成熟过程中起着决定性的作用。甲状腺激素过多或过少直接关系到脑的发育和功能状况。有关甲状腺激素作用的分子机制的研究已经取得了重要的进步。研究发现发育脑中的甲状腺激素通过调控特异基因的表达来发挥作用。母体甲状腺激素主要影响妊娠前20周胎儿的神经发育。     

Early predictors of career development: A 10-year follow-up study

This paper presents empirical findings from a 10-year longitudinal study of the educational and occupational socialization of 445 participants who were about 7 years old when first tested, and about 17 years old at the fourth time of measurement. In addition to collecting psychological measurements from the participants, behavioral reports were collected from significant others, specifically parents and teachers. Findings demonstrated that the life/career evolution of the participants can be understood only when taking into account the dynamic interaction between the unique personal characteristics of individuality of each person and the psychosocial theatre within which the person’s development takes place. Using the life-span, life-space framework of Super, and the Developmental-Contextual model from Vondracek, different emerging early predictors with unique impact on the process of educational and occupational socialization were identified, especially with respect to the probability of dropping out of school. Results in terms of gender, parental influences, psychological characteristics, and social context are discussed with regard to their potential implications for psychological interventions in schools, families, and occupational settings, as well as with regard to personal counseling in what concerns the management of life circumstances and behavioral ecosystems.     

对微创脊柱外科发展历程的思考

微创脊柱外科是现代脊柱外科发展的必然趋势。近几十年来,微创技术不断革新,微创理念也逐渐深入人心。在取得了巨大成就的同时还有许多问题值得我们去思考和探索。我们不仅应注重微创技术的创新和应用,更要注意应用微创理念,做到二者的有机统一。     

What the eyes already ‘know’: using eye movement measurement to tap into children's implicit numerical magnitude representations

To date, a number of studies have demonstrated the existence of mismatches between children's implicit and explicit knowledge at certain points in development that become manifest by their gestures and gaze orientation in different problem solving contexts. Stimulated by this research, we used eye movement measurement to investigate the development of basic knowledge about numerical magnitude in primary school children. Sixty‐six children from grades one to three (i.e. 6–9 years) were presented with two parallel versions of a number line estimation task of which one was restricted to behavioural measures, whereas the other included the recording of eye movement data. The results of the eye movement experiment indicate a quantitative increase as well as a qualitative change in children's implicit knowledge about numerical magnitudes in this age group that precedes the overt, that is, behavioural, demonstration of explicit numerical knowledge. The finding that children's eye movements reveal substantially more about the presence of implicit precursors of later explicit knowledge in the numerical domain than classical approaches suggests further exploration of eye movement measurement as a potential early assessment tool of individual achievement levels in numerical processing. Copyright © 2009 John Wiley & Sons, Ltd.     

Individual and contextual factors: An interactionist approach to understanding employee self-development

While prior research has identified several individual characteristics and contextual factors influential on an employee’s quantity of self-development participation, no research has examined multiplicative effects among these factors. This study investigated person-situation interactions among five individual characteristics (e.g., openness to experience) and the contextual factor of workplace support for self-development. This study also sought to investigate the link between proactive personality and self-development participation, a promising individual characteristic that has received little attention in the self-development literature. Data collected from 136 employees demonstrates significant interactions between workplace support with learning goal orientation, openness to experience, and conscientiousness. As hypothesized, workplace support is more strongly, positively linked to quantity of self-development participation for employees lower in these traits. In contrast, the provision of external support is rather inconsequential for those high in these traits, as these employees demonstrate an internal propensity to engage in voluntary development regardless of the support available. Regarding proactive personality, a significant positive relationship was observed with self-development quantity. Further, although the expected interaction between proactive personality and workplace support did not reach statistical significance (p = .056), it was in the hypothesized direction.