International Journal of Developmental Science - Volume Pre-press, issue Pre-press

Authors: Orihuela, Catheryn A. | Evans, Retta | Mrug, Sylvie | Kelly, Destiny

Article Type: Research Article

Abstract: Due to a decline in diet quality during adolescence, youth are less likely to consume adequate nutrient dense foods to meet recommended requirements. Iron intake in particular is crucial for healthy physical and brain development in adolescence, but few studies have examined the role of iron intake in adolescents’ behavior problems. The current study examined the associations between iron intake and two types of behavior problems in early adolescents – aggression and rule breaking. The sample included 272 middle school students (Mage  =12.08; 53% female; 47% Black, 37% White, 9% Hispanic, 6% other racial/ethnic group). Multivariate regression analyses adjusting for …sociodemographic covariates revealed that higher iron intake was linked to lower aggressive behaviors (β = - .16, p  < .05), but was not associated with rule breaking. These findings support the role of iron intake in healthy behavioral development in adolescence. Show more

Keywords: Adolescence, nutrition, behavior problems, iron intake

DOI: 10.3233/DEV-240359

Citation: International Journal of Developmental Science, vol. Pre-press, no. Pre-press, pp. 1-7, 2024

Authors: Maffongelli, Laura | Haerms, Lea | Paulus, Markus | Altvater-Mackensen, Nicole

Article Type: Research Article

Abstract: Action processing is a crucial aspect of cognition and perception. It provides a window into the way we understand others and learn about the world. During the preschool years, there are significant developments in how children process actions. Here, we systematically review tasks investigating action processing in preschoolers, employing the electronic databases PubMed, Scopus and PsycINFO. We extracted 680 studies on action processing in preschoolers and identified 66 papers that focused on typically developing children. The studies employed various tasks, which we categorized based on their complexity and the cognitive abilities they demand. This review not only sheds light on …the intricate developmental nuances of action processing during the preschool period but also serves as a valuable resource for researchers. By providing insights into the emergence of different ways how children process actions, it aids in selecting appropriate tasks for investigating action-related skills in preschool children. Show more

Keywords: Action processing, action task, preschool children, child development, action goal

DOI: 10.3233/DEV-230340

Citation: International Journal of Developmental Science, vol. Pre-press, no. Pre-press, pp. 1-29, 2024

Authors: Weingarten, Jenna P. | Bowker, Julie C. | Simms, Leonard J.

Article Type: Research Article

Abstract: This Viewpoint paper argues for a peer trade-off model of personality disorder (PD) traits during adolescence that allows for both positive (e.g., popularity, peer acceptance) and negative (e.g., peer rejection, peer victimization, peer exclusion) peer outcomes. The need for new interpersonal (dsy)function models of PD traits during adolescence is urgent because most research has focused on internalizing and externalizing psychopathology, as well as adults, who differ from adolescents in the value that they place on different social behaviors. Available clinical treatments for PD traits have also been based on findings with adults. Thus, new models are not only needed …but would have profound etiological, diagnostic, and treatment implications. We describe preliminary findings that support our proposed peer trade-off model. In conclusion, we describe promising new directions to further evaluate the model and advance knowledge about PD traits during adolescence. Show more

Keywords: Personality disorder, traits, trade-offs, peer-nomination, popularity, rejection, adolescence

DOI: 10.3233/DEV-230354

Citation: International Journal of Developmental Science, vol. Pre-press, no. Pre-press, pp. 1-6, 2024