Annual Review of Developmental Psychology - Volume 1, 2019

Eleanor Maccoby wrote a book-length memoir of her life at age 99, two years before her death. It is a fascinating and richly detailed account of a life well lived, filled with reminiscences and perspectives that are written with Eleanor's characteristic honesty and humor. The excerpts in this article focus on Eleanor's professional career, starting when she and her husband, Nathan (“Mac”) Maccoby, moved to Washington, DC, during World War II. We invite interested readers to read the full memoir for insights into Eleanor's upbringing and personal life (https://www.annualreviews.org/eleanormaccoby).

A developmental scientific perspective on drawing legal age boundaries begins with the premise that the age at which the rights and responsibilities of adulthood are conferred to minors must align with the psychological capacities and skills necessary to exercise good judgment in specific contexts. This article examines three aspects of development relevant to this analysis: cognitive capabilities, especially those that support reasoned and deliberative decision making; psychosocial capacities, especially those that facilitate self-regulation under conditions of social or emotional arousal; and neurobiological maturation in brain regions and systems that undergird these cognitive and psychosocial skills. We conclude that the maturation of the capacity to reason and deliberate systematically precedes, by as much as five years, the maturation of the ability to exercise self-regulation, especially in socially and emotionally arousing contexts. Legal age boundaries should distinguish between two very different decision-making contexts: those that allow for unhurried, logical reflection and those that do not.

The nature of adolescent–parent relationships has been a topic of enduring concern in developmental science. In this article, we review theory and current research on several central topics. First, we define adolescence as a developmental period and briefly discuss current theoretical and analytical approaches. Then, we consider adolescent–parent relationship quality, including developmental trends and individual differences in negative interactions, positive relationships, and conflict resolution, as well as research that examines relationship quality within different family subsystems. Next, we discuss effects of emotional variability and flexibility on parent–adolescent relationships and review research on adolescents’ and parents’ beliefs about parental authority legitimacy. This is followed by a discussion of current research on parenting effects on adolescent–parent relationships, including approaches that provide greater specificity in defining parental control and its links with relationship quality, as well as research on parental monitoring and adolescent information management. We conclude this article with directions for future research.

Around 15 million children are born preterm (<37 weeks of gestation) every year. Of these, 15% or 2.25 million are born very preterm (VP; <32 weeks of gestation). Here, the developmental outcomes of VP babies in diverse domains from motor, cognitive, and social function to mental health and well-being throughout childhood and adolescence are reviewed. Their life course adaptation in terms of romantic relationships, employment, and quality of life into adulthood is also considered. Some adverse effects reduce as individuals age, and others remain remarkably stable from childhood into adulthood. We argue that to advance understanding of developmental mechanisms and direct resources for intervention more effectively, social factors need to be assessed more comprehensively, and genetically sensitive designs should be considered with neuroimaging integrated to test alternative developmental models. As current evidence is based almost exclusively on studies from high-income countries, research from low- and middle-income countries is urgently needed.

There is clear evidence that early deprivation in the form of early institutional care affects children both immediately and long after they are removed from the institution. This article reviews the modern literature on the impact of institutional care from animal models to longitudinal studies in humans. Importantly, we examine the current understanding of neuroendocrine regulation in the context of early deprivation. We discuss the opportunities and limitations of studying the effects of deprivation in previously institutionalized children, review behavioral findings and related neurobiological studies, and address the physical health ramifications of institutional care. Finally, we touch on future directions for both science and intervention.

Human culture is unique among animals in its complexity, variability, and cumulative quality. This article describes the development and diversity of cumulative cultural learning. Children inhabit cultural ecologies that consist of group-specific knowledge, practices, and technologies that are inherited and modified over generations. The learning processes that enable cultural acquisition and transmission are universal but are sufficiently flexible to accommodate the highly diverse cultural repertoires of human populations. Children learn culture in several complementary ways, including through exploration, observation, participation, imitation, and instruction. These methods of learning vary in frequency and kind within and between populations due to variation in socialization values and practices associated with specific educational institutions, skill sets, and knowledge systems. The processes by which children acquire and transmit the cumulative culture of their communities provide unique insight into the evolution and ontogeny of human cognition and culture.

Children's neighborhood contexts are defined by rising socioeconomic inequality and segregation. This article reviews several decades of research on how neighborhood socioeconomic conditions are associated with children's development. The nonexperimental literature suggests that the most salient neighborhood socioeconomic condition depends on the outcome—disadvantage for social, emotional, and behavioral outcomes and advantage for achievement-related outcomes. Moreover, children's cumulative exposure to neighborhood socioeconomic conditions over the first two decades of life, and possibly especially in childhood, may matter most for later development. These findings are partially supported by the few experimental studies available, and across study designs, neighborhood effects are typically modest. In order to improve our understanding of this topic, we recommend methodologically rigorous designs—experimental and nonexperimental—and comparative approaches, particularly ones addressing the complexities of development in neighborhood contexts. To guide this research, we provide an integrated framework that captures a broad and dynamic perspective including macro forces, neighborhood social processes and resources, physical features, spatial dynamics, and individual differences.

This review summarizes empirical findings and theoretical concepts in cognitive aging and late-life dementia research, with emphases on (a) person-to-person heterogeneity in trajectories of cognitive change over time, (b) how trajectories of child cognitive development determine peak levels of adult cognitive function from which aging-related cognitive declines occur, and (c) how lifelong trajectories of cognitive function relate to the timing of severe cognitive impairments characteristic of dementia. I consider conceptual issues surrounding categorical versus dimensional models of late-life dementia and discuss how current diagnostic approaches affect inferences in the empirical study of disease progression. Together, the incomplete current understanding of the biological foundations of aging-related cognitive declines and the continuous nature of many biomarkers commonly used in dementia diagnosis and classification pose both opportunities and challenges in the current research landscape. Future research will benefit from accurately measuring and analyzing continuous variation in longitudinal trajectories of cognitive function.

Plasticity can be defined as the brain's capacity to achieve lasting structural changes in response to environmental demands that are not fully met by the organism's current functional capacity. Plasticity is triggered when experiential forces interact with genetic programs in the maturation of species-common functions (e.g., vision), but it is also required for less universal forms of learning that sculpt individuals into unique members of their species. Hence, delineating the mechanisms that regulate plasticity is critical for understanding human ontogeny. Nevertheless, mechanisms of plasticity in the human brain and their relations to individual differences in learning and lifespan development are not well understood. Drawing on animal models, developmental theory, and concepts from reinforcement learning, we introduce the exploration–selection–refinement (ESR) model of human brain plasticity. According to this model, neuronal microcircuits potentially capable of implementing the computations needed for executing a task are, early in learning, widely probed and therefore structurally altered. This phase of exploration is followed by phases of experience-dependent selection and refinement of reinforced microcircuits and the concomitant gradual elimination of novel structures associated with unselected circuits. The ESR model makes a number of predictions that are testable in humans and has implications for the study of individual differences in lifespan development.

Language is a fundamentally social endeavor. Pragmatics is the study of how speakers and listeners use social reasoning to go beyond the literal meanings of words to interpret language in context. In this article, we take a pragmatic perspective on language development and argue for developmental continuity between early nonverbal communication, language learning, and linguistic pragmatics. We link phenomena from these different literatures by relating them to a computational framework (the rational speech act framework), which conceptualizes communication as fundamentally inferential and grounded in social cognition. The model specifies how different information sources (linguistic utterances, social cues, common ground) are combined when making pragmatic inferences. We present evidence in favor of this inferential view and review how pragmatic reasoning supports children's learning, comprehension, and use of language.

Visual attention is a basic mechanism of information gathering and environment selection and consequently plays a fundamental role in influencing developmental trajectories. Here, we highlight evidence for predictive associations from early visual attention to emotion regulation, executive function, language and broader cognitive ability, mathematics and literacy skills, and neurodevelopmental conditions. Development of visual attention is also multifaceted and nonlinear. In daily life, core functions such as orienting, selective filtering, and processing of visual inputs are intertwined and influenced by many other cognitive components. Furthermore, the demands of an attention task vary according to the experience, motivation, and cognitive and physical constraints of participants, while the mechanisms underlying performance may change with development. Thus, markers of attention may need to be interpreted differently across development and between populations. We summarize research that has combined multiple measurements and techniques to further our understanding of visual attention development and highlight possibilities for the future.

An extensive literature on childhood adversity and neurodevelopment has emerged over the past decade. We evaluate two conceptual models of adversity and neurodevelopment—the dimensional model of adversity and stress acceleration model—in a systematic review of 109 studies using MRI-based measures of neural structure and function in children and adolescents. Consistent with the dimensional model, children exposed to threat had reduced amygdala, medial prefrontal cortex (mPFC), and hippocampal volume and heightened amygdala activation to threat in a majority of studies; these patterns were not observed consistently in children exposed to deprivation. In contrast, reduced volume and altered function in frontoparietal regions were observed consistently in children exposed to deprivation but not children exposed to threat. Evidence for accelerated development in amygdala-mPFC circuits was limited but emerged in other metrics of neurodevelopment. Progress in charting neurodevelopmental consequences of adversity requires larger samples, longitudinal designs, and more precise assessments of adversity.

Accumulating evidence demonstrates the importance of social relations at all stages of life (infancy, childhood, adolescence, adulthood, and old age) and in diverse domains of life (including health and well-being). To illustrate the newest advancements in the scientific study of social relations over the life course, we address five emerging areas of importance: societal and demographic changes in family structure; effects of new technologies on social relations; the fundamental influence of context on social relations, illustrated with the sample case of health; the role of social relations in the unfortunate but pressing crisis of trauma among the increasing number of refugees worldwide; and, finally, effects of social relations on cognitive functioning in late life. Each of these areas highlights critical key concepts and methodological approaches, illustrating that the study of social relations is demanding but holds great promise for meeting the urgent needs of developmental science specifically and society generally.

The United States has developed an effective safety net of programs starting during the Great Depression, picking up steam in the War on Poverty of the 1960s, and continuing to this day. These efforts have been impactful. Child poverty rates tracked by the supplemental poverty measure have dropped by nearly 50% since the 1960s. Causal studies show that many of these programs improve child outcomes by alleviating income poverty. Some of the evidence shows that such impacts last into adulthood. Nevertheless, addressing child poverty is unfinished business for the United States. Children are still the poorest age group in our society. More robust versions of present safety net programs, as well as the possible introduction of child benefits/child allowances, which many other high-resource countries already provide to families, will need to be considered if we are going to make further progress in substantially reducing child poverty.

Social categorization is a universal mechanism for making sense of a vast social world with roots in perceptual, conceptual, and social systems. These systems emerge strikingly early in life and undergo important developmental changes across childhood. The development of social categorization entails identifying which ways of classifying people are culturally meaningful, how these categories might be used to predict, explain, and evaluate the behavior of other people, and how one's own identity relates to these systems of categorization and representation. Social categorization can help children simplify and understand their social environment but has detrimental consequences in the forms of stereotyping, prejudice, and discrimination. Thus, understanding how social categorization develops is a central problem for the cognitive, social, and developmental sciences. This review details the multiple developmental processes that underlie this core psychological capacity.

Parent–child separation occurs for many reasons, both involuntary and voluntary. We review the effects on children and youth of parent–child separation due to several of the most common reasons that are responsible for the growth in this family circumstance worldwide. These include early institutionalization; war, persecution, and conflict; separation during asylum; trafficking; conscription into armed conflict; and being left behind when parents migrate for economic or other reasons. Overall, the effects of parent–child separation are consistently negative on children's social-emotional development, well-being, and mental health. They are more severe when the separation is prolonged or accompanied by other forms of deprivation or victimization. Mitigating and protective factors include earlier stable family placement in the case of early institutionalization, parent–child communication and parenting quality, and community support in the host community. We conclude with an evaluation of group, school-based, and community-based interventions for children and youth affected by parent–child separation.