The articles in this special issue take an important step in beginning to test the PET framework. Together, these articles illustrate the importance of considering individual differences in attitudes and prior knowledge as well as differences in task demands when investigating the role of emotions in shaping cognitive processing while reading…

In this commentary, I delineate several questions raised by the Hammond and Drummond (2019) paper: (a) to why there seems to be an association between state positive emotion and prosocial behavior in young children, and if and how early positively tinged prosocial behavior provides a pathway to (b) later prosocial behavior more generally…

Psychological and behavioral variance can be explained by differences in the environment, and between and within individuals. Almost 60 years ago, Cronbach (1957) called for converging investigations into all three sources as important for the development of accurate science and useful applications in the real world. Yet rifts among researchers…

We are grateful to the commentators for providing many stimulating and valuable observations. The main point of our article was to call attention to the overestimation of individual differences correlations in a subset of neuroimaging papers. To structure our discussion of these comments, we list the main points from our paper, note where…

Brain development is self-organizing in that the unique structure of each brain evolves in unpredictable ways through recursive modifications of synaptic networks. In this article, I review mechanisms of neural change in real time and over development, and I argue that change at each of these time scales embodies principles of self-organizing…

This article demonstrates how personal construct theory is used to make generalizations about the perceptions of those in educational and other organizations and to identify organizational subcultures. Constructivist researchers should focus on the individual within the organization, rather than strive for generalized norms about organizational…

Summarizes the main debate points on the issue and nature of bullies and bullying, and clarifies unresolved issues concerning the nature and limits of social competence values. Argues that variations in children's emotion processes may underlie some individual differences that have been found in empathy, social information processing, and reactive…

This essay examines the development of individual differences in emotion regulation and the role that specific styles of emotion regulation and dysregulation play in affecting young children's interactive behavior with peers. It advances a general developmental pathway that conceptualizes individual variations in terms of both infant traits and…

In this article, the author describes the two types of street children: (1) those children whose vagrancy was forced upon them by families and circumstances; and (2) those children who have an urge to go wandering, not because they are unhappy and have been abused but because they have an urge for it. Even though these children do run away from…