In this article we adopt the view that emotion dysregulation is characterized by emotion regulation dynamics that are defined as dysfunctional based on contextual criteria. We regard the construct of emotion regulation as valuable because it permits the integration of the classic view of emotions as interfering with human functioning and contemporary views of emotion as adaptive and beneficial. To define patterns that reflect emotion dysregulation, we explain our views of emotion as a dynamic process, and emotion regulation as the bidirectional interplay between emotions and actions/thoughts (extrinsic factors) and the contextual factors that constitute the criteria for that interplay reflecting dysregulation. This conceptualization of emotion regulation and dysregulation leads to methods for studying the intrinsic dynamics of emotion, extrinsic factors that change the intrinsic dynamics of emotion, and how emotion regulation changes over time at multiple time scales. We then apply this thinking to several emotion dysregulation patterns. Emotion regulation is a complex construct, embracing emotion as regulator and as regulated, as self- and other-regulated, and as incorporating both top-down and bottom-up regulatory processes. We highlight an emerging line of research on the development of emotion regulation in early childhood and indicate how this work can inform understanding of emotion dysregulation and the emergence of psychopathology.

The idea that language skills support school readiness, predicting later self‐regulation and academic success, is widely accepted. Although vocabulary is often emphasized in the developmental literature, the ability to use language appropriately in the classroom, or social communication skills, may also be critical. This article examined longitudinal contributions of children's vocabulary and social communication skills, from preschool to kindergarten, to kindergarten academic achievement (reading and math) and self‐regulation (executive functions and learning behaviors). Participants were 164 children (14% Latinx, 30% Black, 56% White; 57% girls) enrolled in Head Start programs. Results revealed that initial levels and growth in vocabulary and communication skills predicted better academic achievement. Social communication skills uniquely predicted self‐regulation, after accounting for vocabulary. We discuss potential mechanisms for these links and recommend that strategies to build social communication skills be incorporated in preschool interventions promoting school readiness.

Links between mother-infant affective matching and attachment security are welldocumented, but research on other types of behavioral matching and attachment security are lacking, as are studies that examine these constructs later in children's development. We examine language style matching (LSM) between mothers and their school-aged children (N 5 68), using interviews with each dyad member. As predicted, regressions revealed that higher mother-child relational LSM was associated with greater child attachment security (operationalized as high security, low dismissal), and that higher LSM predicted smaller increases in children's electrodermal response to a relational probe 1.5 years later. Further, mother-child relational LSM was a mediator in the indirect path between children's attachment security and children's reactivity. We discuss the potential utility of LSM as a measure of relationship quality and future studies that could refine our understanding of parent-child language matching.

Recent conceptualizations of emotion dysregulation define it as a process that unfolds over multiple time scales and that leads to short- or long-term impairments. This chapter discusses the advantages of observational methods for measuring emotion dysregulation as a process, focusing on three patterns and associated evidence of them from observational studies. First, the chapter discusses context-inappropriate emotion, the absence of an expected emotional reaction or an atypical reaction for the situational context. Second, it discusses atypical emotion dynamics, specifically emotional expressions that change abruptly, including but not limited to emotional lability. Third, it discusses ways in which emotions endure and are difficult to modify, pointing to ineffective strategy use as a mechanism. It concludes by discussing new directions for observational research, including creative study design and analytic methods that can capture emotion dysregulation.

Although the functionalist perspective on emotional development posits that emotions serve adaptive functions, empirical tests of the role of anger mostly focus on how anger contributes to dysfunction. Developmentally, as children gain agency and skill at emotion regulation between the ages of 36 months and 48 months, their modulation of anger may facilitate its functional role for behavior. We examined this possibility through study of how 120 children’s anger and sadness were related to persistence during the transparent locked box task at ages 36 and 48 months. Using survival analyses, we examined how children’s anger and sadness were related to their giving up during the challenging task, and whether those relations were moderated by age. Using hidden Markov models (HMMs), we examined how children transitioned among anger, sadness, and on-task behavior states and whether those dynamics differed with age. Survival analysis revealed that age moderated the relation between anger and giving up. Greater anger was associated with greater likelihood of giving up earlier in the task at 36 months but with lower likelihood of giving up at 48 months. HMM analyses revealed that children were more likely to transition from a Calm/On-task to Calm/Off-task state at 36 months than at 48 months; that children were more likely to remain in an Anger/On-task state at 36 months than at 48 months; and that children were more likely to transition from Calm/On-task to Anger/On-task, and from Anger/On-task back to Calm/On-task at 48 months than at 36 months. Taken together, the findings suggest that anger appraisals may facilitate children in maintaining persistence, but that this functionality may develop with age.