User:Smalls2023/Developmental psychology

Developmental psychology is the study of how 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.

Developmental psychology examines the influences of nature and nurture on the process of human development, as well as processes of change in context across time. Many researchers are interested in the interactions among personal characteristics, the individual's behavior, and environmental factors. This includes the social context and the built environment. Ongoing debates in regards to developmental psychology include biological essentialism vs. neuroplasticity and stages of development vs. dynamic systems of development. Research in developmental psychology has some limitations but at the moment researchers are working to understand how transitioning through stages of life and biological factors may impact our behaviors and development.

Developmental psychology involves a range of fields, such as educational psychology, child psychopathology, forensic developmental psychology, child development, cognitive psychology, ecological psychology, and cultural psychology. Influential developmental psychologists from the 20th century include Urie Bronfenbrenner, Erik Erikson, Sigmund Freud, Anna Freud, Jean Piaget, Barbara Rogoff, Esther Thelen, and Lev Vygotsky.

Stages of psychosocial development
Main article: Erikson's stages of psychosocial development Erik Erikson German-American psychologist Erik Erikson and his collaborator and wife, Joan Erikson, posits eight stages of individual human development influenced by biological, psychological, and social factors throughout the lifespan.  At each stage the person must resolve a challenge, or an existential dilemma. Successful resolution of the dilemma results in the person ingraining a positive virtue, but failure to resolve the fundamental challenge of that stage reinforces negative perceptions of the person or the world around them and the person's personal development is unable to progress.

The first stage, "Trust vs. Mistrust", takes place in infancy. The positive virtue for the first stage is hope, in the infant learning whom to trust and having hope for a supportive group of people to be there for him/her.

The second stage is "Autonomy vs. Shame and Doubt" with the positive virtue being will. This takes place in early childhood when the child learns to become more independent by discovering what they are capable of whereas if the child is overly controlled, feelings of inadequacy are reinforced, which can lead to low self-esteem and doubt.

The third stage is "Initiative vs. Guilt." The virtue of being gained is a sense of purpose. This takes place primarily via play. This is the stage where the child will be curious and have many interactions with other kids. They will ask many questions as their curiosity grows. If too much guilt is present, the child may have a slower and harder time interacting with their world and other children in it.

The fourth stage is "Industry (competence) vs. Inferiority". The virtue for this stage is competency and is the result of the child's early experiences in school. This stage is when the child will try to win the approval of others and understand the value of their accomplishments.

The fifth stage is "Identity vs. Role Confusion". The virtue gained is fidelity and it takes place in adolescence. This is when the child ideally starts to identify their place in society, particularly in terms of their gender role.

The sixth stage is "Intimacy vs. Isolation", which happens in young adults and the virtue gained is love. This is when the person starts to share his/her life with someone else intimately and emotionally. Not doing so can reinforce feelings of isolation.

The seventh stage is "Generativity vs. Stagnation". This happens in adulthood and the virtue gained is care. A person becomes stable and starts to give back by raising a family and becoming involved in the community.

The eighth stage is "Ego Integrity vs. Despair". When one grows old, they look back on their life and contemplate their successes and failures. If they resolve this positively, the virtue of wisdom is gained. This is also the stage when one can gain a sense of closure and accept death without regret or fear.

Stages based on the model of hierarchical complexity
Main article: Model of hierarchical complexity

Michael Commons enhanced and simplified Bärbel Inhelder and Piaget's developmental theory and offers a standard method of examining the universal pattern of development. The Model of Hierarchical Complexity (MHC) is not based on the assessment of domain-specific information, It divides the Order of Hierarchical Complexity of tasks to be addressed from the Stage performance on those tasks. A stage is the order hierarchical complexity of the tasks the participant's successfully addresses. He expanded Piaget's original eight stage (counting the half stages) to seventeen stages. The stages are:


 * 1) Calculatory
 * 2) Automatic
 * 3) Sensory & Motor
 * 4) Circular sensory-motor
 * 5) Sensory-motor
 * 6) Nominal
 * 7) Sentential
 * 8) Preoperational
 * 9) Primary
 * 10) Concrete
 * 11) Abstract
 * 12) Formal
 * 13) Systematic
 * 14) Metasystematic
 * 15) Paradigmatic
 * 16) Cross-paradigmatic
 * 17) Meta-Cross-paradigmatic

The order of hierarchical complexity of tasks predicts how difficult the performance is with an R ranging from 0.9 to 0.98.

In the MHC, there are three main axioms for an order to meet in order for the higher order task to coordinate the next lower order task. Axioms are rules that are followed to determine how the MHC orders actions to form a hierarchy. These axioms are: a) defined in terms of tasks at the next lower order of hierarchical complexity task action; b) defined as the higher order task action that organizes two or more less complex actions; that is, the more complex action specifies the way in which the less complex actions combine; c) defined as the lower order task actions have to be carried out non-arbitrarily.

Zone of proximal development
Lev Vygotsky was a Russian theorist from the Soviet era, who posited that children learn through hands-on experience and social interactions with members of their culture. Vygotsky believed that a child's development should be examined during problem-solving activities. Unlike Piaget, he claimed that timely and sensitive intervention by adults when a child is on the edge of learning a new task (called the "zone of proximal development") could help children learn new tasks. Zone of proximal development is a tool used to explain the learning of children and collaborating problem solving activities with an adult or peer. This adult role is often referred to as the skilled "master", whereas the child is considered the learning apprentice through an educational process often termed "cognitive apprenticeship" Martin Hill stated that "The world of reality does not apply to the mind of a child." This technique is called "scaffolding", because it builds upon knowledge children already have with new knowledge that adults can help the child learn. Vygotsky was strongly focused on the role of culture in determining the child's pattern of development, arguing that development moves from the social level to the individual level. In other words, Vygotsky claimed that psychology should focus on the progress of human consciousness through the relationship of an individual and their environment. He felt that if scholars continued to disregard this connection, then this disregard would inhibit the full comprehension of the human consciousness.

Stability vs change
Main article: Stability and Change

This issue involves the degree to which one becomes older renditions of their early experience or whether they develop into something different from who they were at an earlier point in development. It considers the extent to which early experiences (especially infancy) or later experiences are the key determinants of a person's development. Stability is defined as the consistent ordering of individual differences with respect to some attribute. Change is altering someone/something.

Most human development lifespan developmentalists recognize that extreme positions are unwise. Therefore, the key to a comprehensive understanding of development at any stage requires the interaction of different factors and not only one.

Theory of mind
Theory of mind is the ability to attribute mental states to ourselves and others. It is a complex but vital process in which children begin to understand the emotions, motives, and feelings of not only themselves but also others. Theory of mind allows people to understand that others have unique beliefs and desires that are different from our own. This enables people to engage in daily social interactions as we explain the mental state around us. If a child does not fully develop theory of mind within this crucial 5-year period, they can suffer from communication barriers that follow them into adolescence and adulthood. Exposure to more people and the availability of stimuli that encourages social-cognitive growth is a factor that relies heavily on family.

Memory development
Researchers interested in memory development look at the way our memory develops from childhood and onward. According to fuzzy-trace theory, a theory of cognition originally proposed by Valerie F. Reyna and Charles Brainerd, people have two separate memory processes: verbatim and gist. These two traces begin to develop at different times as well as at a different pace. Children as young as four years old have verbatim memory, memory for surface information, which increases up to early adulthood, at which point it begins to decline. On the other hand, our capacity for gist memory, memory for semantic information, increases up to early adulthood, at which point it is consistent through old age. Furthermore, one's reliance on gist memory traces increases as one ages.

Life stages of psychological development
See also: Child development stages

Infancy
Main articles: Infant and child psychology and Infant cognitive development

From birth until the first year, the child is referred to as an infant, 'in this case an infant is typically defined as a young kid especially a child on the first years. Although they are normally grouped together as infants, each of the kids have their own way of doing and responding to things as they grow up, hence considered different'. Developmental psychologists vary widely in their assessment of infant psychology, and the influence the outside world has upon it.

The majority of a newborn infant's time is spent in sleep. At first, this sleep is evenly spread throughout the day and night, but after a couple of months, infants generally become diurnal. 'In a human and rodent infant there is always the observation of a diurnal cortisol rhythm which is sometimes typically entrained with a maternal substance. Nevertheless the circadian rhythm stats to take shape, and a 24 hour rhythm is observed on the kid in just some few months after birth.'

Infants can be seen to have six states, grouped into pairs:


 * quiet sleep and active sleep (dreaming, when REM sleep occurs). Generally, there are various reasons as to why infants dream. People have different arguments, some argue that it is just a psychotherapy, which usually occur normally in the brain and other say that it is a form of processing and consolidating information that has been obtained during the day. Others argue that it is a way of representing unconscious desires.
 * quiet waking, and active waking
 * fussing and crying. In a normal set up, infants have different reasons as to why they cry. Mostly, infants cry because they are uncomfortable or wet, they are unsettled, and they might be feeling hungry or are just crying to get pampered by their parents.

Language
Main article: Language development

Babies are born with the ability to discriminate virtually all sounds of all human languages. Infants of around six months can differentiate between phonemes in their own language, but not between similar phonemes in another language. Notably, infants are able to differentiate between various durations and sound levels and can easily differentiate all the languages they have encountered, hence easy for infants to understand a certain language compared to an adult. At this stage infants also start to babble, whereby they start making vowel consonant sound as they try to understand the true meaning of language and copy whatever they are hearing in their surrounding producing their own phonemes.

Critical periods of development
There are critical periods in infancy and childhood during which development of certain perceptual, sensorimotor, social and language systems depends crucially on environmental stimulation. Feral children such as Genie, deprived of adequate stimulation, fail to acquire important skills and are unable to learn in later childhood. In this case, 'Genie is used to represent the case of a feral child because she was socially neglected and abused while she was just a young girl. She underwent abnormal child psychology which involved problems with her linguistics. This happened because she was neglected while she was very young with no one to care about her and had less human contact.' The concept of critical periods is also well-established in neurophysiology, from the work of Hubel and Wiesel among others. Neurophysiology in infants generally provides correlating details that exists between neurophysiological details and clinical features and also focuses on vital information on rare and common neurological disorders that affect infants.