Developmental psychology is the scientific study of how and why humans grow, change, and adapt across the course of their lives. Originally concerned with infants and children, the field has expanded to include adolescence, adult development, aging, and the entire lifespan. Developmental psychologists aim to explain how thinking, feeling, and behaviors change throughout life. This field examines change across three major dimensions, which are physical development, cognitive development, and social emotional development. Within these three dimensions are a broad range of topics including motor skills, executive functions, moral understanding, language acquisition, social change, personality, emotional development, self-concept, and identity formation.
Psychology is the study of mind and behavior. Its subject matter includes the behavior of humans and nonhumans, both conscious and unconscious phenomena, and mental processes such as thoughts, feelings, and motives. Psychology is an academic discipline of immense scope, crossing the boundaries between the natural and social sciences. Biological psychologists seek an understanding of the emergent properties of brains, linking the discipline to neuroscience. As social scientists, psychologists aim to understand the behavior of individuals and groups.
Applied psychology is the use of psychological methods and findings of scientific psychology to solve practical problems of human and animal behavior and experience. Educational and organizational psychology, business management, law, health, product design, ergonomics, behavioural psychology, psychology of motivation, psychoanalysis, neuropsychology, psychiatry and mental health are just a few of the areas that have been influenced by the application of psychological principles and scientific findings. Some of the areas of applied psychology include counseling psychology, industrial and organizational psychology, engineering psychology, occupational health psychology, legal psychology, school psychology, sports psychology, community psychology, neuropsychology, medical psychology and clinical psychology, evolutionary psychology, human factors, forensic psychology and traffic psychology. In addition, a number of specialized areas in the general area of psychology have applied branches. However, the lines between sub-branch specializations and major applied psychology categories are often mixed or in some cases blurred. For example, a human factors psychologist might use a cognitive psychology theory. This could be described as human factor psychology or as applied cognitive psychology. When applied psychology is used in the treatment of behavioral disorders there are many experimental approaches to try and treat an individual. This type of psychology can be found in many of the subbranches in other fields of psychology.
Cognitive development is a field of study in neuroscience and psychology focusing on a child's development in terms of information processing, conceptual resources, perceptual skill, language learning, and other aspects of the developed adult brain and cognitive psychology. Qualitative differences between how a child processes their waking experience and how an adult processes their waking experience are acknowledged. Cognitive development is defined as the emergence of the ability to consciously cognize, understand, and articulate their understanding in adult terms. Cognitive development is how a person perceives, thinks, and gains understanding of their world through the relations of genetic and learning factors. There are four stages to cognitive information development. They are, reasoning, intelligence, language, and memory. These stages start when the baby is about 18 months old, they play with toys, listen to their parents speak, they watch TV, anything that catches their attention helps build their cognitive development.
Urie Bronfenbrenner was a Russian-born American psychologist best known for using a contextual framework to better understand human development. This framework, broadly referred to as 'ecological systems theory', was formalized in an article published in American Psychologist, articulated in a series of propositions and hypotheses in his most cited book, The Ecology of Human Development and further developed in The Bioecological Model of Human Development and later writings. He argued that natural experiments and applied developmental interventions provide valuable scientific opportunities. These beliefs were exemplified in his involvement in developing the US Head Start program in 1965. Bronfenbrenner's writings about the limitations of understanding child development solely from experimental laboratory research and the potential for using contextual variability to provide insight into developmental processes was important in changing the focus of developmental psychology.
Evolutionary developmental psychology (EDP) is a research paradigm that applies the basic principles of evolution by natural selection, to understand the development of human behavior and cognition. It involves the study of both the genetic and environmental mechanisms that underlie the development of social and cognitive competencies, as well as the epigenetic processes that adapt these competencies to local conditions.
A microsystem is a self-contained subsystem located within a larger system. It generally constitutes the smallest unit of analysis in systems theory.
Social learning is learning that takes place at a wider scale than individual or group learning, up to a societal scale, through social interaction between peers.
Cross-cultural psychology is the scientific study of human behavior and mental processes, including both their variability and invariance, under diverse cultural conditions. Through expanding research methodologies to recognize cultural variance in behavior, language, and meaning it seeks to extend and develop psychology. Since psychology as an academic discipline was developed largely in North America and Europe, some psychologists became concerned that constructs and phenomena accepted as universal were not as invariant as previously assumed, especially since many attempts to replicate notable experiments in other cultures had varying success. Since there are questions as to whether theories dealing with central themes, such as affect, cognition, conceptions of the self, and issues such as psychopathology, anxiety, and depression, may lack external validity when "exported" to other cultural contexts, cross-cultural psychology re-examines them using methodologies designed to factor in cultural differences so as to account for cultural variance. Some critics have pointed to methodological flaws in cross-cultural psychological research, and claim that serious shortcomings in the theoretical and methodological bases used impede, rather than help the scientific search for universal principles in psychology. Cross-cultural psychologists are turning more to the study of how differences (variance) occur, rather than searching for universals in the style of physics or chemistry.
Socio-ecological models were developed to further the understanding of the dynamic interrelations among various personal and environmental factors. Socioecological models were introduced to urban studies by sociologists associated with the Chicago School after the First World War as a reaction to the narrow scope of most research conducted by developmental psychologists. These models bridge the gap between behavioral theories that focus on small settings and anthropological theories.
The behavioral analysis of child development originates from John B. Watson's behaviorism.
Michael E. Lamb is a professor and former Head of the then Department of Social and Developmental Psychology at the University of Cambridge, known for his influential work in developmental psychology, child and family policy, social welfare, and law. His work has focused on divorce, child custody, child maltreatment, child testimony, and the effects of childcare on children's social and emotional development. His work in family relationships has focused on the role of both mothers and fathers and the importance of their relationships with children. Lamb's expertise has influenced legal decisions addressing same-sex parenting, advocating for fostering and adoption by adults regardless of their marital status or sexual orientations. Lamb has published approximately 700 articles, many about child adjustment, currently edits the APA journal Psychology, Public Policy, and Law, and serves on the editorial boards on several academic journals.
The bioecological model of development is the mature and final revision of Urie Bronfenbrenner's ecological system theory. The primary focus of ecological systems theory is on the systemic examination of contextual variability in development processes. It focuses on the world outside the developing person and how they were affected by it. After publication of The Ecology of Human Development, Bronfenbrenner's first comprehensive statement of ecological systems theory, additional refinements were added to the theory. Whereas earlier statements of ecological systems theory focused on characteristics of the environment, the goal of the bioecological model was to explicate how characteristics of the developing person influenced the environments to which the person was exposed and how they were affected by the environment. The bioecological model is strongly influenced by Bronfenbrenner's collaborations with Stephen Ceci. Whereas much of Bronfenbrenner's work had focused on social development and the influence of social environments on development, Ceci's work focuses on memory and intelligence. The bioecological model reflects Ceci's work on contextual variability in intelligence and cognition and Bronfenbrenner's interest in developmentally instigative characteristics - how people help to create their own environments.
Jeanne Brooks-Gunn is an American developmental psychologist and professor. She is currently the Virginia and Leonard Marx Professor of Child Development at Teachers College, Columbia University.
Aletha C. Huston is an American developmental psychologist and professor known for her research on the effects of poverty on children, on how child care and income support policies impact children's development, and for ground-breaking research on the impact of television and media usage on child development. Huston is the Priscilla Pond Flawn Regents Professor Emeritus in Child Development at the University of Texas at Austin.
School climate refers to the quality and character of school life. It has been described as "the heart and soul of the school ... that essence of a school that leads a child, a teacher, and an administrator to love the school and to look forward to being there each school day." A positive school climate helps people feel socially, emotionally and physically safe in schools. It includes students', parents' and school personnel's norms, beliefs, relationships, teaching and learning practices, as well as organizational and structural features of the school. According to the National School Climate Council, a sustainable, positive school climate promotes students' academic and social emotional development.
Racial-ethnic socialization describes the developmental processes by which children acquire the behaviors, perceptions, values, and attitudes of an ethnic group, and come to see themselves and others as members of the group.
Relationship science is an interdisciplinary field dedicated to the scientific study of interpersonal relationship processes. Due to its interdisciplinary nature, relationship science is made-up of researchers of various professional backgrounds within psychology and outside of psychology, but most researchers who identify with the field are psychologists by training. Additionally, the field's emphasis has historically been close and intimate relationships, which includes predominantly dating and married couples, parent-child relationships, and friendships & social networks, but some also study less salient social relationships such as colleagues and acquaintances.
The Department of Human Development was a multidisciplinary department at Cornell University from 1925 to 2021. During its lifetime, the Department led research on developmental science to simultaneously advance theory and improve life. The department emphasized an ecological perspective of human development that examined social, cultural, biological, and psychological processes and mechanisms of growth and change throughout the life cycle and across diverse contexts. Many significant social science scholars of the 20th and 21st century, including Urie Bronfenbrenner and Kurt Lewin, were among the department's faculty. A number of the department's graduate students became significant figures in the social sciences with their work tending toward interdisciplinary and cross-disciplinary approaches.
Ross A. Thompson is an American author and research psychologist. He is Distinguished Professor Emeritus of psychology at the University of California, Davis, and is director of the Social & Emotional Development Lab. Thompson is known for his work on the psychological development of young children. His influences on developmental research and public policy were recognized in the Urie Bronfenbrenner Award for Lifetime Contribution to Developmental Psychology in the Service of Science and Society in 2018 by the American Psychological Association, the Ann L. Brown Award for Excellence in Developmental Research in 2007. Thompson received the Distinguished Lifetime Achievement from Zero to Three in 2023.
The diagram of the ecosystemic model was created by Buehler (2000) as part of a dissertation on assessing interactions between a child, their family, and the school and medical systems.
