Five types of personality continuity in childhood and adolescence

This study examines 5 types of personality continuity--structural, mean-level, individual-level, differential, and ipsative--in a representative population (N=498) and a twin and sibling sample (N=548) of children and adolescents. Parents described their children on 2 successive occasions with a 36-month interval using the Hierarchical Personality Inventory for Children (I. Mervielde & F. De Fruyt, 1999). There was evidence for structural continuity in the 2 samples, and personality was shown to be largely differentially stable. A large percentage had a stable trait profile indicative of ipsative stability, and mean-level personality changes were generally small in magnitude. Continuity findings were explained mainly by genetic and nonshared environmental factors.     

The hierarchical structure of childhood personality in five countries: continuity from early childhood to early adolescence

Childhood personality is a rapidly growing area of investigation within individual differences research. One understudied topic is the universality of the hierarchical structure of childhood personality. In the present investigation, parents rated the personality characteristics of 3,751 children from 5 countries and 4 age groups. The hierarchical structure of childhood personality was examined for 1-, 2-, 3-, 4-, and 5-factor models across country (Canada, China, Greece, Russia, and the United States) and age group (3-5, 6-8, 9-11, and 12-14 years of age). Many similarities were noted across both country and age. The Five-Factor Model was salient beginning in early childhood (ages 3-5). Deviations across groups and from adult findings are noted, including the prominent role of antagonism in childhood personality and the high covariation between Conscientiousness and intellect. Future directions, including the need for more explicit attempts to merge temperament and personality models, are discussed.     

Personality in middle childhood: A hierarchical structure and longitudinal connections with personality in late adolescence

Research on the structure of personality in middle childhood, while advancing, is still in the early stages of development. In this study, we employed a group of 1563 twins to elucidate the hierarchical structure of personality in middle childhood and provide connections to established personality traits in adult populations. Our results provide evidence for a higher-order structure of personality in middle childhood that maps on to recent findings in adult populations supporting hierarchical relationships among 2-, 3-, 4-, and 5-factor models of personality. In addition, primary higher-order personality traits rated by parents at age 11 showed substantial predictive validity for analogous traits rated by self at age 17. We discuss our results within the context of developing a convergent hierarchical taxonomy of personality in middle childhood and the importance of multi-informant investigations.     

Adversity in adolescence predicts personality trait change from childhood to adulthood

This study examined whether cumulative adversity in adolescence predicted changes in the Big Five traits from childhood to adulthood in the Project Competence Longitudinal Study sample (N = 205) followed from childhood (age 10) through adolescence into adulthood (age 30). Personality traits were measured in childhood through multiple methods and in adulthood by self-report. Cumulative adversity, assessed in adolescence, differentiated independent adversity (likely unrelated to participants’ behavior) from dependent adversity (resulting from participants’ own behavior). Participants’ personality traits were modestly stable over 20 years, although Openness showed greater stability. Independent and dependent adversity predicted increases in Negative Emotionality/Neuroticism, and dependent adversity predicted decreases in Constraint/Conscientiousness and Agreeableness from childhood to adulthood, suggesting that cumulative adversity shapes personality development in young people.     

Beliefs about personality change and continuity

Lay conceptions of personality change and continuity were examined in a sample of 112 undergraduates. Participants rated their personal change over 5 years (past or future), the change they perceived to be normative over 10-year age spans between 15 and 65, their beliefs about whether personality is fixed or malleable (“lay theories”) and their beliefs about the causes of personality change and continuity. Beliefs about normative personality change generally corresponded to research evidence on adult trajectories of the Big Five factors, with some age bias, whereas recalled and anticipated personal change tended to be more positive than these norms. Participants tended to endorse environmental causes more for personality change than for continuity. Lay theories were not consistently associated with these causal beliefs, or with beliefs about personal and normative change.     

Developmental trajectories of aggression from late childhood through adolescence: similarities and differences across gender

Although numerous investigations of overt aggressive and antisocial trajectories have been undertaken, there is a dearth of literature examining gender differences and similarities in trajectory patterns and their correlates. To address these gaps, we investigated gender differences in the prevalence rates, predictive validity during transition to adulthood, childhood risk factors, and adolescent correlates of different trajectories of teacher-reported overt aggression (i.e., fights, argues, gets in trouble) among 220 participants (116 girls and 104 boys) evaluated annually from grade 4 to grade 12. Four patterns of trajectories were identified: low, increasing (i.e., adolescent-onset), decreasing (i.e., childhood-limited), and high (i.e., childhood-onset). A large proportion of youth, particularly girls, displayed low levels of aggression over time. A small proportion followed the childhood-onset trajectory. Across gender, the childhood-onset trajectory was associated with the highest rates of maladjustment during the transition to adulthood, the highest number of childhood risk factors, and multiple problems during adolescence. The adolescent-onset trajectory was associated with few childhood risk factors, but with high levels of independent status during adolescence. In contrast, the childhood-limited trajectory was associated with several childhood risk factors, but high levels of parental monitoring and school engagement during adolescence. Romantic involvement differentiated the adolescent-onset and childhood-limited trajectories among girls.     

Stability and change in personality traits from late adolescence to early adulthood: a longitudinal twin study

We conducted a longitudinal-biometric study examining stability and change in personality from ages 17 to 24 in a community sample of male and female twins. Using Tellegen's (in press) Multidimensional Personality Questionnaire (MPQ), facets of Negative Emotionality (NEM) declined substantially at the mean and individual levels, whereas facets of Constraint (CON) increased over time. Furthermore, individuals in late adolescence who were lowest on NEM and highest on CON remained the most stable over time, whereas those exhibiting the inverse profile (higher NEM, lower CON) changed the most in a direction towards growth and maturity. Analyses of gender differences yielded greater mean-level increases over time for women as compared to men on facets of CON and greater mean-level increases for men than women on facets of Agentic Positive Emotionality (PEM). Biometric analyses revealed rank-order stability in personality to be largely genetic, with rank-order change mediated by both the nonshared environment (and error) as well as genes. Findings correspond with prior evidence of a normative trend toward growth and maturity in personality during emerging adulthood.     

Longitudinal study of defense mechanisms: late childhood to late adolescence

Based on longitudinal data from the Institute of Human Development Intergenerational Study, the use and change in defense mechanisms of more than 150 individuals, as assessed from TAT stories, was studied across ages 11, 12, and 18. The findings of this study, based on an earlier generation, were generally consistent with cross-sectional findings from current samples, showing that the defenses of projection and identification were used more frequently than denial at all three ages and that the use of projection and identification increased from early to late adolescence. However, unlike current findings, the 18-year-olds did not show greater use of identification than of projection, perhaps due to IQ differences between this community sample and the samples of more recent studies.     

The growing evidence for personality change in adulthood: Findings from research with personality inventories

Theories of adult development all agree that adulthood is a time of important changes in goals, resources, and coping. Yet, impressed with the rank-order stability of individual differences in personality, many researchers interested in personality traits and personality assessment doubt that personality changes in meaningful and systematic ways during adulthood. This article reviews large studies of mean-level change in personality characteristics measured with broad-band personality inventories, and includes both cross-sectional and cross-cohort longitudinal research. The results show considerable generalizability across samples, cohorts, and studies. In particular, people score higher with age on characteristics such as conscientiousness, agreeableness, and norm-adherence, and they score lower with age on social vitality. These findings provide evidence that personality does change during adulthood and that these changes are non-negligible in size, systematic, not necessarily linear, and theoretically important.     

Factors associated with continuity and changes in disruptive behavior patterns between childhood and adolescence

The relationships between disruptive behaviors in middle childhood (7 to 9 years) and conduct disorder in adolescence (14 to 16 years) were studied in a birth cohort of New Zealand children. Latent class analysis suggested strong behavioral continuity, with children showing early disruptive behaviors having odds of adolescent conduct disorder that were over 16 times higher than children who did not display early disruptive behavior. Nonetheless, in the region of 12% of children showed a discontinuous history, with 5% of children showing an early onset of conduct problems and later remission while 7% showed later onset conduct problems. Children showing discontinuous histories of behavior problems came from backgrounds in which levels of risk were intermediate between those of children who showed a persistent pattern of conduct problems and those who were consistently nonproblem children. Peer factors played an influential role in behavioral change in adolescence, with individuals showing late onset of conduct problems having high rates of affiliation with delinquent peers but those showing remission of problem behaviors in adolescence having relatively low rates of such affiliations.This research was funded by grants from the Health Research Council of New Zealand, the National Child Health Research Foundation, and the Canterbury Medical Research Foundation.     

Friendship stability and change in childhood and adolescence

The objective of this review is to focus on a neglected aspect of children’s and adolescents’ friendships: the level of temporal stability. First, a rationale for examining stability as a distinct friendship dimension is presented. Next, the different levels of friendship experiences are distinguished. Friendship stability is also discussed across developmental periods. Factors affecting friendships stability and individual correlates associated with friendship stability are then covered. Finally, the methodological issues pertaining to the study of friendship stability are addressed. The authors conclude by emphasizing the importance of pursuing future research that aims to demonstrate the pertinence of the friendship stability construct as an individual difference variable. Further, on a methodological level, the assessment of stability needs to be based on longitudinal designs that include multiple measurement waves. Ultimately, such detailed analysis of stability will allow a better understanding of the dynamic processes by which friendships change over time and affect children’s and adolescents’ psychosocial development.     

Sex differences in ADHD trajectories across childhood and adolescence

Previous studies have hinted at sex differences in developmental trajectories in ADHD symptoms; however, little is known about the nature or cause of these differences and their implications for clinical practice. We used growth mixture modelling in a community‐ascertained cohort of n = 1,571 participants to study sex differences in ADHD symptom developmental trajectories across the elementary and secondary school years. Participants were measured at ages 7, 8, 9, 10, 11, 12, 13, and 15. We found that females were more likely to show large symptom increases in early adolescence while males were more likely to show elevated symptoms from childhood. For both males and females, early adolescence represented a period of vulnerability characterized by relatively sudden symptom increases. Females affected by hyperactivity/impulsivity may be more likely to be excluded from diagnosis due to current age of onset criteria. More attention should be paid to early adolescence as a period of risk for hyperactivity/impulsivity symptom onset or worsening.     

Egocentrism and ego resiliency: personality characteristics associated with perspective-taking from early childhood to adolescence

In this study we examined the longitudinal relation between ego resiliency and egocentrism. Measures of Level 1 and Level 2 egocentrism were administered to one hundred eleven 3 1/2-year-old children. Independent personality evaluations were available on these children at ages 3, 4, 7, 11, and 14 in the form of Q-sort ratings by independent sets of teachers and examiners. The relation between egocentrism and ego resiliency was observed to depend on level of egocentrism, as well as on sex of subject. In the sample of girls, both Level 1 and Level 2 egocentrism were negatively correlated with ego resiliency concurrently at age 3, but no long-term implications of egocentrism emerged. In the sample of boys, Level 1 egocentrism was consistently negatively associated with ego resiliency from early childhood (age 3) into adolescence (age 14). However, Level 2 egocentrism displayed no concurrent nor any dependable longitudinal relation with ego resiliency. The discussion focuses on possible interpretations of the relation between egocentrism and ego resiliency and on the sex differences in the pattern of longitudinal results.     

Relationships and development during adolescence: Interpersonal adaptation to individual change

Developmental perspectives on relationships address Processes of dyadic adaptation to normative changes in individuals. Relationships with parents and peers during adolescence are a microcosm of these continuous adaptations. Three key themes from research on relationships during adolescence are examined: changes in relative distance from, and connectedness to, different categories of relationship partners; the coexistence of continuity and change in relationships; and increasing differentiation and interrelation of relationships. Findings from studies of adolescent relationships (1) illustrate the potential value of normative perspectives on relationship properties and conditions and (2) underscore the need for further research on processes of relationship change. Particularly needed are testable formulations regarding the processes of relationship change and attention to interrelations among significant close relationships.     

Assessing and interpreting personality change and continuity in patients treated for major depression

Structural, mean- and individual-level, differential, and ipsative personality continuity were examined in 599 patients treated for major depression assigned to 1 of 6 forms of a 6-month pharmaco-psychotherapy program. Covariation among traits from the Five Factor model remained invariant across treatment, and patients described themselves as slightly more extraverted, open to experience, agreeable and conscientious, and substantially more emotional stable after treatment. Trait changes were only to a small extent explained by changes in depression severity. There was evidence for differential, individual-level, and ipsative stability, with stable personality profiles in terms of shape and to a lesser extent in terms of scatter and elevation. Traits remain relatively stable, except for emotional stability, despite the depressive state and the psychopharmacological interventions.     

Peer victimization as a risk factor for schizotypal personality in childhood and adolescence

There has been no prior research on peer victimization and child or adolescent schizotypal personality. This study tests the hypothesis that increased peer victimization is associated with increased schizotypal personality. Schizotypy was assessed using the SPQ-C (Schizotypal Personality Questionnaire-Child) in 3,508 male and female schoolchildren aged 8 to 16 years. All forms of peer victimization (physical, verbal, social manipulation, attack on property) were associated with schizotypal personality in both males and females across all age groups. Significant victimization more than doubled schizotypy scores. It is hypothesized that peer victimization may predispose to paranoid ideation, social anxiety, and lack of close friends, and consequently heightened schizotypal personality.     

Reward improves cancellation and restraint inhibition across childhood and adolescence

Inhibitory control allows for the regulation of thought and action and interacts with motivational variables, such as reward, to modify behavior adaptively as environments change. The authors examined the effects of reward on two distinct forms of inhibitory control, cancellation and restraint. Typically developing children and adolescents completed 2 versions of the stop signal task (cancellation and restraint) under 3 reward conditions (neutral, low reward, and high reward), where rewards were earned for successful inhibitory control. Rewards improved both cancellation and restraint inhibition, with similar effects of reward on each form of inhibitory control. Rewards did not alter the speed of response execution in either task, suggesting that rewards specifically altered inhibition processes without influencing processes related to response execution. Adolescents were faster and less variable than children when executing and inhibiting their responses. There were similar developmental effects of reward on the speed of inhibitory control, but group differences were found in terms of accuracy of inhibition in the restraint task. These results clarify how reward modulates two different forms of regulatory behavior in children and adolescents.     

A distant mirror: Memories of parents and friends across childhood and adolescence

Memories that were easily accessible (i.e., quickly retrieved in a memory‐fluency task) of Italian university students were assessed. They were from four periods of life: preschool, elementary school, middle school, and high school/university. Half of the participants were instructed to recall only memories involving parents, and the other half memories involving friends. Across age at the time of remembered events, only memories of friends increased in frequency. For parental memories (but not friend memories), the proportion with negative affect increased over age, especially for males. There were also differences related to whether memories were episodic or generic. It was concluded that memories of different periods of childhood and adolescence can serve as a reflective mirror for developmental changes in parent–child and friendship relationships.     

Development of emotional facial recognition in late childhood and adolescence

The ability to interpret emotions in facial expressions is crucial for social functioning across the lifespan. Facial expression recognition develops rapidly during infancy and improves with age during the preschool years. However, the developmental trajectory from late childhood to adulthood is less clear. We tested older children, adolescents and adults on a two-alternative forced-choice discrimination task using morphed faces that varied in emotional content. Actors appeared to pose expressions that changed incrementally along three progressions: neutral-to-fear, neutral-to-anger, and fear-to-anger. Across all three morph types, adults displayed more sensitivity to subtle changes in emotional expression than children and adolescents. Fear morphs and fear-to-anger blends showed a linear developmental trajectory, whereas anger morphs showed a quadratic trend, increasing sharply from adolescents to adults. The results provide evidence for late developmental changes in emotional expression recognition with some specificity in the time course for distinct emotions.