Piaget’s Stages of Development and Key Concepts

Piaget developed four stages of development that describe how children think and acquire knowledge. The first stage is the Sensorimotor stage, which occurs from birth to 18-24 months. In this stage, infants learn through sensory observation and gain control of their motor functions through activity, exploration, and manipulation of the environment.

The second stage is the Preoperational stage, which occurs from 2 to 7 years. During this stage, children use symbols and language more extensively, but they are unable to think logically of deductively. They also use a type of magical thinking and animistic thinking.

The third stage is the Concrete Operational stage, which occurs from 7 to 11 years. In this stage, egocentric thought is replaced by operational thought, which involves dealing with a wide array of information outside the child. Children in this stage begin to use limited logical thought and can serialise, order, and group things into classes on the basis of common characteristics.

The fourth and final stage is the Formal Operations stage, which occurs from 11 through the end of adolescence. This stage is characterized by the ability to think abstractly, to reason deductively, to define concepts, and also by the emergence of skills for dealing with permutations and combinations.

Piaget also developed key concepts, including schema, assimilation, and accommodation. A schema is a category of knowledge and the process of obtaining that knowledge. Assimilation is the process of taking new information into an existing schema, while accommodation involves altering a schema in view of additional information.

Overall, Piaget’s stages of development and key concepts provide a framework for understanding how children learn and acquire knowledge.

Sophie has entered the phase of conventional morality where she comprehends that morality is determined by motivation rather than outcomes. However, societal norms still dictate what is considered moral rather than individual beliefs. This is exemplified by the emphasis on everyone in moral reasoning. Additionally, children begin to recognize the significance of portraying themselves as having virtuous intentions.

Development: Erikson and Marcia

Erikson’s theory of psychosocial development outlines eight stages of ego growth, each marked by a specific crisis that must be resolved for positive development. These stages range from trust vs. mistrust in infancy to integrity vs. despair in old age. Successful resolution of each crisis leads to positive growth and development.

Marcia expanded on Erikson’s theory, focusing on identity formation during adolescence. He described four separate identity statuses, which represent the four possible combinations of commitment and exploration. Identity confusion/diffusion occurs when adolescents neither explore nor commit to any identities. Foreclosure occurs when an individual commits to an identity without exploring options. A moratorium is a state in which adolescents are actively exploring options but have not yet made commitments. Individuals who have explored different options, discovered their purpose, and have made identity commitments are in a state of identity achievement.

Overall, both Erikson and Marcia’s theories emphasize the importance of positive resolution of developmental crises and the role of exploration and commitment in identity formation.

Chaining involves teaching and connecting the components of a complex task in order to teach the task as a whole. Cueing helps the learner focus on important stimuli. Extinction occurs when a conditioned response gradually disappears due to repeated presentation of the conditioned stimulus without the unconditioned stimulus. Habituation is a decrease in response to a stimulus after repeated presentation and is important in treating OCD. Shaping involves reinforcing successively closer approximations to the desired behavior to build up complex behavior, and has clinical applications in managing behavioral disturbances, learning disabilities, and substance misuse.

Erik Erikson and Daniel Levinson expanded the understanding of adult development. Erikson proposed a life-span model of human development consisting of eight successive psychosocial stages, each associated with an inherent conflict of crisis that the individual must encounter and successfully resolve to proceed with development. Levinson proposed a developmental theory consisting of universal stages of phases that extend from the infancy state to the elderly state, based on biographical interviews of 40 men in America. Both theorists maintained that personality develops in a predetermined order and builds upon each previous stage, and that failure to successfully negotiate a stage can result in a reduced ability to complete further stages and therefore a more unhealthy personality and sense of self. However, Levinson’s theory is age-based rather than event-based, and his model proposed a ‘life sequence’ consisting of a series of alternating stable (structure-building) periods and cross-era transitional (structure-changing) periods, with transitional periods typically lasting 5 years.

The Emergence of Social Smiling in Infants

Wormann (2014) discusses the emergence of social smiling in infants, which is usually interpreted as the first positive expression directed towards a cause. This occurs when an infant with an initially expressionless face examines the face of another person, and their face and eyes light up while the corners of their mouth pull upward. The age of the first appearance of the social smile varies across cultures, ranging from the fifth to seventh week. Additionally, there are differences in its duration and frequency between the second and seventh month of life. Understanding these milestones is important for a basic understanding of normal child development.

Child Development Milestones:
4 weeks Responds to noise (either by crying, of quieting), follows an object moved in front of eyes
6 weeks Begins social smiling*
3 months Holds head steady on sitting
6 months Rolls from stomach to back, starts babbling
7 months Transfers objects from hand to hand, looks for dropped object
9 months Sits unsupported, begins to crawl
12 months Cruising (walking by holding furniture)
18 months Walks without assistance, speaks about 10-20 words
2 years Runs, climbs up and down stairs alone, makes 2-3 word sentences
3 years Dresses self except for buttons and laces, counts to 10, feeds themself well
4 years Hops on one foot, copies a cross
5 years Copies a triangle, skips

Psychosexual Development

The psychosexual theory of development, developed by Freud, outlines a number of stages that individuals go through in their development. These stages are quite complex, but tend to come up in exams. The stages include the oral stage, which occurs from birth to 18 months, where pleasure and needs are explored through sucking, swallowing, and biting. The anal stage occurs from 18 to 36 months, where pleasure and needs are explored through bowel and bladder elimination and retention. The phallic stage occurs from 3 to 5 years, where boys pass through the Oedipal complex and girls the Electra complex. Girls are also said to develop penis envy in this stage. The latency stage occurs from 5 to puberty, where the sexual drive remains latent. Finally, the genital stage occurs from puberty to adulthood, where a person achieves independence from their parents and forms intimate relationships with others.

Attachment theory is a framework that emphasizes the importance of secure emotional bonds and resources in shaping an individual’s development and behavior. It highlights the significance of early relationships and experiences in shaping one’s sense of security and ability to form healthy relationships later in life.

Childhood Fear: Normal Development

It is normal for children to experience fear and anxiety as they grow and develop. According to Marks’ ‘ontogenetic parade’ theory, children’s fears follow a predictable pattern throughout their development. In the preschool years, children may fear imaginary creatures, animals, strangers, and their environment. As they enter middle childhood, fears of physical danger, bodily injury, and school performance become more prominent. During adolescence, fears about social evaluations and interactions become more common.

Gullone’s research in 1999 identified specific fears that are prominent at different ages. For example, towards the end of the first year, children may fear strangers, heights, and separation anxiety. In preschool years, fears of being alone, the dark, and animals are common. During the school years, children may fear bodily injury, illness, social situations, supernatural phenomena, failure, and criticism. Finally, in adolescence, fears about death, economic and political concerns may persist.

Overall, fear and anxiety are a normal part of child development, and parents and caregivers can support children by acknowledging their fears and helping them develop coping strategies.

Rett Syndrome: A Rare Neurodevelopmental Disorder

Rett syndrome is a neurodevelopmental disorder that is rare, affecting approximately 1 in 10,000 female births. Although it mostly affects females, there have been cases of males with the disorder. While the exact cause of the disorder is not known, it is believed to have a genetic basis, with mutations in the MECP2 gene (Xq28) being associated with the disorder. Monozygotic twins have been found to have complete concordance in cases of Rett syndrome.

The disorder has a unique presentation, with affected children experiencing a normal period of development until 6-18 months. After this period, they begin to develop problems with language, losing previously acquired speech. Purposeful hand movements are replaced with stereotypic movements, such as hand wringing, and ataxia and psychomotor retardation may occur. Other stereotypical movements, such as finger licking of biting and tapping of slapping, may also be seen. Head circumference is normal at birth, but growth begins to decelerate between 6-12 months, resulting in microcephaly. All language skills are lost, both receptive and expressive, and social skills plateau at developmental levels between 6-12 months.

Seizures are associated with Rett syndrome in 75% of those affected, and almost all affected children have abnormal EEG findings. Breathing problems, such as hyperventilation, apnea, and breath holding, are also seen. Children with Rett syndrome may live for well over a decade after the onset of the disorder, but after 10 years, many patients are wheelchair-bound with virtually no language ability. Additional features of the disorder include seizures, breath holding and hyperventilation, sleep difficulties, and issues with locomotion.