Personality development encompasses the dynamic construction and deconstruction of integrative characteristics that distinguish an individual in terms of interpersonal behavioral traits. [1] Personality development is ever-changing and subject to contextual factors and life-altering experiences. Personality development is also dimensional in description and subjective in nature. [2] That is, personality development can be seen as a continuum varying in degrees of intensity and change. It is subjective in nature because its conceptualization is rooted in social norms of expected behavior, self-expression, and personal growth. [3] [4] The dominant viewpoint in personality psychology indicates that personality emerges early and continues to develop across one's lifespan. [5] Adult personality traits are believed to have a basis in infant temperament, meaning that individual differences in disposition and behavior appear early in life, potentially before language of conscious self-representation develop. [6] The Five Factor Model of personality maps onto the dimensions of childhood temperament. [7] This suggests that individual differences in levels of the corresponding personality traits (neuroticism, extraversion, openness to experience, agreeableness, and conscientiousness) are present from young ages. [8]
The development of personality is supported and attempted to be explained by theories of personality.
The Psychoanalytic Theory of personality was developed by Sigmund Freud. This theory consists of three main ideas that make up personality, the id, the ego, and the superego. The three traits control their own sections of the psyche. Personality is developed by the three traits that make up the Psychoanalytic theory conflicting. Id is ruled mainly by pleasure, innate needs, impulses, and desires. Much of these are usually unrealistic. Our ego is what keeps us sane. It brings into perspective reality, cultural norms, and social acceptance and analyses our id desires and wants to be more realistically correct. Our superego aims for perfection and structure. It is often referenced to as our "conscience." These three play a part in the way we live, think, and our personality. [9]
The Trait Theory of personality is one of the main theories in the study of personality. According to this theory, traits make up personality. Traits can be described as patterns of behavior, thought, or emotion. Some commonly accepted trait theories are the Big Five personality traits and the HEXACO model of personality structure. Generally, strong correlations are seen in the levels of any given personality trait in an individual when they are retested several years later. Traits tend to become more stable after young adulthood, and changes in these traits often follow some noticeable trends with age. For example, the trait Honesty-Humility is typically seen to decrease during teenage years, then steadily rise as the individual ages. The trait conscientiousness is generally seen to increase with age, however, the level of the facet perfectionism stays fairly consistent. [10]
The social cognitive theory of personality views personality development in terms of reciprocal interactionism, that is, a perspective that considers the relationship of person-society as an interactive system that defines and molds personal development. Personal interaction with other individuals, society, and nature create experiences in which self-identification is organized in relation to social environment. [11] In other words, personality traits are a function of complex cognitive strategies used to effectively maneuver through social situations. Furthermore, according to the social-cognitive perspective, cognitive processes are central to an individual's unique expression of personality traits and affective processes. Through cognitive mechanism and social competencies, individuals interpret contextual situations to derive beliefs that guide their thoughts and behaviors, thus developing an enduring pattern of personality traits. [12] [11]
The evolutionary theory of personality development is primarily based on the evolutionary process of natural selection. [13] From the evolutionary perspective, evolution resulted in variations of the human mind. Natural selection refined these variations based on their beneficence to humans. Due to human complexity, many opposing personality traits proved to be beneficial in a variety of ways. [14] Primitive humans were collectivists due to tribe culture. The personalities of individuals within a tribe were very similar. The division of labor resulted in differentiation in personality traits in order to achieve a higher efficiency. Differentiation in personality traits increased functionality, therefore becoming adaptive through natural selection. Humans continued to develop personality and individuality through evolution. [15]
Classic theories of personality include Freud's tripartite theory and post-Freudian theory (developmental stage theories and type theories) and indicate that most personality development occurs in childhood, stabilizing by the end of adolescence. Current lifespan perspectives that integrate theory and empirical findings dominate the research literature. The lifespan perspectives of personality are based on the plasticity principle, the principle that personality traits are open systems that can be influenced by the environment at any age. [5] Large-scale longitudinal studies have demonstrated that the most active period of personality development appears to be between the ages of 20–40. [5] Although personality grows increasingly consistent with age and typically plateaus near age 50, personality never reached a period of total stability. [16] [17]
Humanistic psychology emphasizes individual choices as voluntary actions that ultimately determine personal development. Individual personalities traits, although essential to the integrated self, are only parts that make up the whole of observable human experiences. Thus, personality development is articulated in terms of purposeful action geared towards experiencing mastery of free choice. Rather than compartmentalized elements of personality traits such as feelings, thoughts, or behavior, Humanistic psychology integrates these elements as functions of being in a greater encompassing system such as societies, cultures, or interpersonal relationships. Consequently, personality development is subjected to shifts in personal meaning and individual goals of achieving an ideal self. [18]
Personality traits demonstrate moderate levels of continuity, smaller but still significant normative or mean-level changes, and individual differences in change, often late into the life course. [19] This pattern is influenced by genetic, environmental, transactional, and stochastic factors. [20]
Genetics can have an impact on one's development of personality. Genes are passed on from one generation to the next and contain characteristics of one's being. Personality can be influenced through many genes acting together. These genes can be huge indicators especially in the temperament and even certain psychiatric disorders in people. There is strong evidence provided in what Gestel and Broeckhoven write on the matter that certain disorders such as attention deficit hyperactivity disorder or ADHD and even substance dependance are heavily influenced and determined by our genetics. We can continue looking at the connection between personality and our genes through the many study methods brought about through behavioral genetics that make the connection clearer. [21] Behavioral genetics refers to the results of adoption studies and twin studies.
Adoption Studies: Genetics are not very highly correlated with adoptive families and their personalities. Studies have been performed comparing adoptive siblings in a family to those who were biological siblings. A correlation of p=0.05 was found between the personalities of biological siblings and of other family members. Adoptive siblings had a correlation of p=0.04 between their personalities and the others' in the family. This shows that there is no supporting evidence for genetic differences in personality in relation to a common environment. Similar correlations were associated with parents and their adoptive children compared to their biological children. [22]
Twin Studies: Genetics can have an influence on twins. Studies have shown that identical twins' personalities are more similar than those of nonidentical twins. Identical twins have a correlation of about 40%. Differences in sex have not shown to have any influence on gene heritability or on individual personality. [23]
Twin and adoption studies have demonstrated that the heritability of personality traits ranges from 0.3 to 0.6, with a mean of 0.5, indicating that 50% of variation in observable personality traits is attributable to genetic influences. [24] In contrast, family and adoption studies have demonstrated a low heritability factor. [25] An IAT (implicit association test) on German women has found a connection between specific neurotransmitters and the predisposition for certain personality traits, such as anxiety or extraversion. [26] With the effects of genetic similarity removed, children from the same family often appear no more alike than randomly selected strangers; [27] yet, identical twins raised apart are nearly as similar in personality as identical twins raised together. These findings suggest that shared family environment has virtually no effect on personality development, and that similarity between relatives is almost entirely due to shared genetics. [24]
Personality Development for Students: A Comprehensive Guide===Environmental=== The weakness of shared environmental effects in shaping personality surprised many psychologists, spurring research into non-shared environmental effects, the environmental influences that distinguish siblings from one another. [28] The non-shared environment may include differential treatment by parents, individually-distinct reactions to the shared family environment, peer influences, experiences outside the family, and test error in measurement. In adults, the non-shared environment may also include the unique roles and environments experienced after leaving the family of origin. [29] Further effects of environment in adulthood are demonstrated by research suggesting that different work, marital, and family experiences are associated with personality change; [30] these effects are supported by research involving the impact of major positive and negative life events on personality. [31] [32]
Family and Childhood Experiences:
Family and childhood experiences can have a significant impact on the development of an individual's personality. Here are some ways in which family and childhood experiences can affect personality development:
Overall, family and childhood experiences play a critical role in personality development. Understanding the impact of these experiences is essential for promoting healthy development and providing support to individuals who may have experienced trauma or adversity. [38]
Peer Relationships:
Peer relationships can have a significant impact on the development of an individual's personality. Peer relationships refer to the interactions and social connections that an individual has with their peers, such as friends, classmates, and acquaintances. Here are some ways in which peer relationships can affect personality development:
[42] A culmination of research suggests that the development of personality occurs in relation to one's genetics, one's environment, and the interaction between one's genetics and environment. [43] [44] Van Gestel and Van Broeckhoven (2003) write, “Almost by definition, complex traits originate from interplay between (multiple) genetic factors and environment.” [45] The corresponsive principle of personality development states that “life experiences may accentuate and reinforce the personality characteristics that were partially responsible for the particular environmental elicitations in the first place”. [46] This principle illustrates how gene-environment interactions maintain and reinforce personality throughout the lifespan. Three main types of gene-environment interactions are active (the process by which individuals with certain genotypes select and create environments that facilitate the expression of those genotypes), passive (the process by which genetic parents provide both the genes and the early environmental influences that contribute to the development of a characteristic in their children), and reactive (the process by which non-family individuals respond to the behavior produced by a genotype in characteristic ways). [24] [31]
An example of the way environment can moderate the expression of a gene is the finding by Heath, Eaves, and Martin (1998) that marriage was a protective factor against depression in identical twins, such that the heritability of depression was as low as 29% in a married twin and as high as 51% in an unmarried twin. [47]
Over the course of an individual's lifespan, the stability of their personality has been shown in a meta-analysis of longitudinal studies to be variable, although this variability levels out in adulthood. The beginning of one's personality stability is most evident at the age of 25 years. [48] Behavioral genetics can account for the variability experienced across the lifespan. This is highly evident in the transitions between childhood, adolescence, and adulthood. From childhood to mid-adolescence, the rate of individual differences in personality increases, primarily due to environmental influences. However, genetic influences play a larger role than environmental influences in adulthood, resulting in fewer individual differences in personality between individuals who share similar genetics. [49] In a longitudinal study of individuals across the span of fifty years from adolescence through adulthood, personality was found to be malleable, although variations in the level of malleability stabilized in adulthood. [50]
The personality developing in college students based on the Big Five personality trait domains and facets within those domains has been studied. Rank-order stabilities of facets are high, with values greater than .50 (indicating a strong correlation); the results for trait domains were similar to individual facets. [51] Variation in stability occurs across periods of the lifespan, such as adolescence and adulthood. [43]
The stability and variation of personality is explained by a complex interaction between one's genetics and one's environment. [49]
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.
Personality psychology is a branch of psychology that examines personality and its variation among individuals. It aims to show how people are individually different due to psychological forces. Its areas of focus include:
Nature versus nurture is a long-standing debate in biology and society about the relative influence on human beings of their genetic inheritance (nature) and the environmental conditions of their development (nurture). The alliterative expression "nature and nurture" in English has been in use since at least the Elizabethan period and goes back to medieval French. The complementary combination of the two concepts is an ancient concept. Nature is what people think of as pre-wiring and is influenced by genetic inheritance and other biological factors. Nurture is generally taken as the influence of external factors after conception e.g. the product of exposure, experience and learning on an individual.
In sociology, socialization is the process of internalizing the norms and ideologies of society. Socialization encompasses both learning and teaching and is thus "the means by which social and cultural continuity are attained".
Adolescence is a transitional stage of physical and psychological development that generally occurs during the period from puberty to adulthood. Adolescence is usually associated with the teenage years, but its physical, psychological or cultural expressions may begin earlier or end later. Puberty typically begins during preadolescence, particularly in females. Physical growth and cognitive development can extend past the teens. Age provides only a rough marker of adolescence, and scholars have not agreed upon a precise definition. Some definitions start as early as 10 and end as late as 30. The World Health Organization definition officially designates an adolescent as someone between the ages of 10 and 19.
Conduct disorder (CD) is a mental disorder diagnosed in childhood or adolescence that presents itself through a repetitive and persistent pattern of behavior that includes theft, lies, physical violence that may lead to destruction, and reckless breaking of rules, in which the basic rights of others or major age-appropriate norms are violated. These behaviors are often referred to as "antisocial behaviors", and is often seen as the precursor to antisocial personality disorder; however, the latter, by definition, cannot be diagnosed until the individual is 18 years old. Conduct disorder may result from parental rejection and neglect and in such cases can be treated with family therapy, as well as behavioral modifications and pharmacotherapy. It may also be caused by environmental lead exposure. Conduct disorder is estimated to affect 51.1 million people globally as of 2013.
Personality is any person's collection of interrelated behavioral, cognitive, and emotional patterns that comprise a person’s unique adjustment to life. These interrelated patterns are relatively stable, but can change over long time periods.
Shyness is the feeling of apprehension, lack of comfort, or awkwardness especially when a person is around other people. This commonly occurs in new situations or with unfamiliar people; a shy person may simply opt to avoid these situations. Although shyness can be a characteristic of people who have low self-esteem, the primary defining characteristic of shyness is a fear of what other people will think of a person's behavior. This fear of negative reactions such as being mocked, humiliated or patronized, criticized or rejected can cause a shy person to retreat. Stronger forms of shyness can be referred to as social anxiety or social phobia.
In sociology, a peer group is both a social group and a primary group of people who have similar interests (homophily), age, background, or social status. Members of peer groups are likely to influence each others' beliefs and behaviour.
In trait theory, the Big Five personality traits are a group of five characteristics used to study personality:
The diathesis-stress model, also known as the vulnerability–stress model, is a psychological theory that attempts to explain a disorder, or its trajectory, as the result of an interaction between a predispositional vulnerability, the diathesis, and stress caused by life experiences. The term diathesis derives from the Greek term (διάθεσις) for a predisposition or sensibility. A diathesis can take the form of genetic, psychological, biological, or situational factors. A large range of differences exists among individuals' vulnerabilities to the development of a disorder.
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.
Research on the heritability of IQ inquires into the degree of variation in IQ within a population that is due to genetic variation between individuals in that population. There has been significant controversy in the academic community about the heritability of IQ since research on the issue began in the late nineteenth century. Intelligence in the normal range is a polygenic trait, meaning that it is influenced by more than one gene, and in the case of intelligence at least 500 genes. Further, explaining the similarity in IQ of closely related persons requires careful study because environmental factors may be correlated with genetic factors. Outside the normal range, certain single gene genetic disorders, such as phenylketonuria, can negatively affect intelligence.
Neuroticism is a personality trait associated with negative emotions. It is one of the Big Five traits. Individuals with high scores on neuroticism are more likely than average to experience such feelings as anxiety, worry, fear, anger, frustration, envy, jealousy, pessimism, guilt, depressed mood, and loneliness. Such people are thought to respond worse to stressors and are more likely to interpret ordinary situations, such as minor frustrations, as appearing hopelessly difficult. Their behavioral responses may include procrastination, substance use, and other maladaptive behaviors, which may temporarily aid in relieving negative emotions and generating positive ones.
Behavioural genetics, also referred to as behaviour genetics, is a field of scientific research that uses genetic methods to investigate the nature and origins of individual differences in behaviour. While the name "behavioural genetics" connotes a focus on genetic influences, the field broadly investigates the extent to which genetic and environmental factors influence individual differences, and the development of research designs that can remove the confounding of genes and environment. Behavioural genetics was founded as a scientific discipline by Francis Galton in the late 19th century, only to be discredited through association with eugenics movements before and during World War II. In the latter half of the 20th century, the field saw renewed prominence with research on inheritance of behaviour and mental illness in humans, as well as research on genetically informative model organisms through selective breeding and crosses. In the late 20th and early 21st centuries, technological advances in molecular genetics made it possible to measure and modify the genome directly. This led to major advances in model organism research and in human studies, leading to new scientific discoveries.
Psychology encompasses a vast domain, and includes many different approaches to the study of mental processes and behavior. Below are the major areas of inquiry that taken together constitute psychology. A comprehensive list of the sub-fields and areas within psychology can be found at the list of psychology topics and list of psychology disciplines.
An addictive personality refers to a hypothesized set of personality traits that make an individual predisposed to developing addictions. This hypothesis states that there may be common personality traits observable in people suffering from addiction; however, the lack of a universally agreed upon definition has marked the research surrounding addictive personality. Addiction is a fairly broad term; it is most often associated with substance use disorders, but it can also be extended to cover a number of other compulsive behaviors, including sex, internet, television, gambling, food, and shopping. Within these categories of addiction a common diagnostic scale involves tolerance, withdrawal, and cravings. This is a fairly contentious topic, with many experts suggesting the term be retired due to a lack of cumulative evidence supporting the existence of addictive personality. It has been claimed that characteristics of personality attributed to addictive personality do not predict addiction, but rather can be the result of addiction. However, different personality traits have been linked to various types of addictive behaviors, suggesting that individual addictions may be associated with different personality profiles. The strongest consensus is that genetic factors play the largest role in determining a predisposition for addictive behaviors. Even then, however, genes play different roles in different types of addictions. Forty to seventy percent of the population variance in the expression of addictions can be explained by genetic factors.
Personality change refers to the different forms of change in various aspects of personality. These changes include how we experience things, how our perception of experiences changes, and how we react in situations. An individual's personality may stay somewhat consistent throughout their life. Still, more often than not, everyone undergoes some form of change to their personality in their lifetime.
Callous-unemotional traits (CU) are distinguished by a persistent pattern of behavior that reflects a disregard for others, and also a lack of empathy and generally deficient affect. The interplay between genetic and environmental risk factors may play a role in the expression of these traits as a conduct disorder (CD). While originally conceived as a means of measuring the affective features of psychopathy in children, measures of CU have been validated in university samples and adults.
Wendy Johnson is an American differential psychologist and professor of psychology at the University of Edinburgh. She holds the chair in Differential Development in the Department of Psychology and Centre for Cognitive Ageing and Cognitive Epidemiology at the University of Edinburgh.
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