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271.
272.
Keith F. Widaman 《Current directions in psychological science》2009,18(1):48-52
ABSTRACT— Phenylketonuria (PKU) is an inborn metabolic error in which metabolism of phenylalanine into tyrosine is disrupted. If the diet of an infant with PKU is not restricted, blood phenylalanine levels are elevated, leading to irremediable brain damage and severe mental retardation. Children with PKU who are placed early and continuously on a low-phenylalanine diet develop normal levels of intelligence, and brain damage is largely prevented. However, if the diet of a mother with PKU is unrestricted during her pregnancy, high phenylalanine levels in her blood can cross the placental barrier and damage the developing fetus in multiple ways. These results demonstrate how genes and environmental factors combine to create prenatal environments that can have profound effects on the growth and development of offspring during infancy and childhood. 相似文献
273.
Wendy Johnson Eric Turkheimer Irving I. Gottesman Thomas J. Bouchard Jr. 《Current directions in psychological science》2009,18(4):217-220
ABSTRACT— The heritability of human behavioral traits is now well established, due in large measure to classical twin studies. We see little need for further studies of the heritability of individual traits in behavioral science, but the twin study is far from having outlived its usefulness. The existence of pervasive familial influences on behavior means that selection bias is always a concern in any study of the causal effects of environmental circumstances. Twin samples continue to provide new opportunities to identify causal effects with appropriate genetic and shared environmental controls. We discuss environmental studies of discordant twin pairs and twin studies of genetic and environmental transactions in this context. 相似文献
274.
This study examines individuals’ perceptions of the impact their significant others have on their health and the extent to
which these perceptions are associated with relationship quality and actual health. Two-hundred and ten participants (105
U.S. couples; mean age = 24.93) completed measures of their relationship quality and health along with an open-ended measure
asking them to indicate how they felt their partner influenced their health. Results indicated that participants perceived
their romantic partners to be primarily positive health influences, women believed their partners were more influential than
did men, and eating and physical activity behaviors were believed to be most affected by partners. Participants’ relationship
quality and health were associated with their reports of their perceived partners’ health influences.
The research described in this report was supported by an award to Charlotte Markey from Rutgers University. 相似文献
275.
Neuropsychological methods and techniques have much to offer in the evaluation of the individual suspected as having Attention-Deficit/Hyperactivity
Disorder (ADHD). After a review of the historical evolution of the ADHD concept, incidence and prevalence, and DSM-IV criteria
for diagnosis, especially as regards omission related to gender differences, and other associated cultural, familial, socioenvironmental,
and subject influences, this paper describes a number of dilemmas and obstacles encountered in clinical practice. Included
are the confounds associated with the wide range of possible comorbidities, the insufficiency of current DSM-IV criteria,
the emergence of subtype differentiation and its impact on diagnosis and treatment. The complex relationship between neuropsychological
constructs and ADHD, and obstacles to valid assessment are also addressed. The complexities associated with a thorough ADHD
evaluation are viewed within an impressive and expansive existing scientific framework and recommendations are made for future
directions. 相似文献
276.
Vocational choice: A decision making perspective 总被引:1,自引:0,他引:1
Henry Sauermann 《Journal of Vocational Behavior》2005,66(2):273-303
We propose a model of vocational choice that can be used for analyzing and guiding the decision processes underlying career and job choices. Our model is based on research in behavioral decision making (BDM), in particular the choice goals framework developed by Bettman, Luce, and Payne (1998). The basic model involves two major processes. First, the selection of a decision strategy according to four choice goals: maximizing decision accuracy, minimizing cognitive effort, minimizing negative emotion, and maximizing justifiability of the decision. Second, the construction of situation-specific preferences, which can reflect irrelevant task and context factors such as the evaluation mode. This basic model is extended to account for social influences and the long decision time typical of most career and job decisions. We review research on vocational choice in light of this model, discuss normative implications for counseling, and outline a research agenda for studying vocational choice from a behavioral decision making perspective. 相似文献
277.
Barbara M. Gfellner Ana I. Cordoba 《Identity: An International Journal of Theory and Research》2017,17(1):25-39
We present a 2-year time-lag study in which Canadian and Spanish students’ perceptions of stress, identity problems, and psychosocial maturity (ego strengths) were examined in relation to academic, social, and personal-emotional adjustment to university under different conditions of macro-environmental disruption (i.e., academic and economic) and no disruption (stability). In the academic disturbance context, students reported increased stress and the economic disruption situation was associated with greater identity problems. The expected relationships were found among the variables in the study. Students reported greater social maladjustment at university related to economic disruption in comparison with the academic and no disruption contexts. Ego strengths moderated the relationship between perceived stress with academic and social adjustment, respectively. In other words, delayed psychosocial development in conjunction with high perceived stress was associated with deficient academic and social functioning at university. The findings are considered in terms of psychosocial development and the role of proximal and distal perception of stressors in the functional well-being of university students. 相似文献
278.
279.
Although a number of reviews of gender differences in conduct problems and delinquency exist, this paper fills a gap in reviewing neighborhood influences on gender differences in conduct problems and delinquency. These influences are known to be important for boys in childhood and adolescence, but cannot be assumed to be influential in the same manner for girls. The paper starts with several conceptualizations of the association between gender, neighborhoods and juvenile delinquency. It then addresses 4 key questions. Is residing in a disadvantaged neighborhood associated with problem behavior in girls? Are neighborhood effects independent of girls' age? Are girls in disadvantaged neighborhoods exposed to more risk factors than girls in advantaged neighborhoods? Can mediating risk factors explain gender differences in neighborhood effects on children's and adolescents' conduct problems and delinquent behavior? Answers to these questions are important to steer research and elucidate aspects of interventions that can be optimized for girls. 相似文献
280.
Although there has been a rapid increase in funding and attention to after-school programs, there is little understanding of how after-school programs impact children's developmental trajectories. The heterogeneity of American children makes it very unlikely that all children need after-school programming or that there is but one brand of after-school programming suitable for all youth. We discuss the numerous developmental and contextual factors that may influence which children benefit most from after-school programs as well as the nature of the after-school programs most beneficial to children's needs. The value of utilizing an ecological and developmental perspective to after-school program evaluation are presented, including the need for improved research designs and more detailed analyses of program type and services as well as a more complete determination of which children benefit the most from after-school participation. 相似文献