Age differences in five personality domains across the life span.

The present study addresses the issue of age differences in 5 personality domains across the life span in a cross-sectional study. In contrast to most previous studies, the present study follows a methodologically more rigorous approach to warrant that age-related differences in personality structure and mean level can be meaningfully compared. It uses data on 50 items of the Five-Factor Personality Inventory (FFPI) available from a study in a large and representative Dutch sample (N = 2,494; age range: 16 to 91 years) conducted in 1996 for the purpose of establishing norms for the FFPI. After having established strict measurement invariance, tests were made for factor covariances to be equal across age groups, revealing structural continuity of personality. Additionally, factor variances were shown to be equal across age groups. A number of age differences in the mean level of the five personality domains emerged. Specifically, older adults were, on average, more agreeable and, especially, more conscientious than middle-aged and younger adults. Findings from our study suggest that both continuity and change may mark personality over the course of life. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age differences in big five behavior averages and variabilities across the adult life span: Moving beyond retrospective, global summary accounts of personality.

In 3 intensive cross-sectional studies, age differences in behavior averages and variabilities were examined. Three questions were posed: Does variability differ among age groups? Does the sizable variability in young adulthood persist throughout the life span? Do past conclusions about trait development, based on trait questionnaires, hold up when actual behavior is examined? Three groups participated: young adults (18–23 years), middle-aged adults (35–55 years), and older adults (65–81 years). In 2 experience-sampling studies, participants reported their current behavior multiple times per day for 1- or 2-week spans. In a 3rd study, participants interacted in standardized laboratory activities on 8 occasions. First, results revealed a sizable amount of intraindividual variability in behavior for all adult groups, with average within-person standard deviations ranging from about half a point to well over 1 point on 6-point scales. Second, older adults were most variable in Openness, whereas young adults were most variable in Agreeableness and Emotional Stability. Third, most specific patterns of maturation-related age differences in actual behavior were more greatly pronounced and differently patterned than those revealed by the trait questionnaire method. When participants interacted in standardized situations, personality differences between young adults and middle-aged adults were larger, and older adults exhibited a more positive personality profile than they exhibited in their everyday lives. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age differences in the big five across the life span: Evidence from two national samples.

Cross-sectional age differences in the Big Five personality traits were investigated using 2 large datasets from Great Britain and Germany: the British Household Panel Study (BHPS; N ≥ 14,039) and the German Socio-Economic Panel Study (GSEOP; N ≥ 20,852). Participants, who ranged in age from 16 to the mid-80s, completed a 15-item version of the Big Five Inventory (e.g., John & Srivastava, 1999) in either 2005 or 2006. The observed age trends were generally consistent across both datasets. Extraversion and Openness were negatively associated with age, whereas Agreeableness was positively associated with age. Average levels of Conscientiousness were highest for participants in middle age. The only exception was Neuroticism, which was slightly negatively associated with age in the BHPS and slightly positively associated with age in the GSEOP. Neither gender nor education level were consistent moderators of age differences in the Big Five. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sex differences in sustained attention across the adult life span.

We used a life span sample of 18- to 91-year-old men (n?=?176) and women (n?=?108) to investigate sex differences and the effect of age on sex differences in performance and arousal during a 62-min no-memory-demand sensory vigilance task (Mackworth's Clock-Test). We observed sex differences in target response time and on measures of autonomic arousal; women were slower and less aroused than men. A review of the literature, in conjunction with the results of this study, led to our concluding that women are slower to respond to targets than men and that women may tend to detect fewer targets than men only when they are young (18–29 years old). Sex differences in arousal levels were consistent with an arousal explanation of sex differences in response time. However, detection accuracy and false alarm rates were not consistent with sex differences in arousal levels. Sex differences in the time course of vigilance performance were inconsistent. Age did not significantly moderate the sex differences in vigilance decrement. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age differences in the monitoring of learning: Cross-sectional evidence of spared resolution across the adult life span.

Researchers of metacognitive development in adulthood have exclusively used extreme-age-groups designs. We used a full cross-sectional sample (N = 285, age range: 18–80) to evaluate how associative relatedness and encoding strategies influence judgments of learning (JOLs) in adulthood. Participants studied related and unrelated word pairs and made JOLs. After a cued-recall test, retrospective item strategy reports were collected. Results revealed developmental patterns not available from previous studies (e.g., a linear age-related increase in aggregate JOL resolution across the life span). They also demonstrated the value of investigating multiple cues' influences on JOLs. Multilevel regression models showed that both relatedness and effective strategy use positively and independently influenced JOLs. Furthermore, effective strategy use was responsible for higher resolution of JOLs for unrelated items (relative to related items). The effects of relatedness and strategy use with JOLs did not interact with age. The monitoring of learning is spared by adult development despite age differences in learning itself. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Patterns of personality change across the life span.

Six aspects of personality were examined for a sample of 211 individuals across either a 30- or 40-year time span. Latent curve analyses found an underlying pattern of lifetime change for self-confidence, cognitive commitment, outgoingness, and dependability. An underlying pattern of lifetime stability was found for assertiveness. No shared systematic underlying pattern could be fit to individuals' lifetime trajectories for warmth. Although individuals shared a single underlying pattern of change or stability for 5 of the 6 dimensions of personality considered here, they also showed differences in the degree and direction of personality change. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Self-concept differentiation across the adult life span.

This study used 2 measures to examine 158 adults' (80 men, 78 women; ages 20 to 88 years) self-concept differentiation (SCD) across 5 role-specific self-representations. Findings revealed that the 2 measures did not assess SCD in similar ways and that they showed different associations with age. Specifically, the 1st measure was not significantly related to age, whereas the 2nd measure showed a curvilinear, U-shaped association with age. The 2nd SCD index also showed significant associations with several measures of emotional adjustment and 6 dimensions of psychological well-being. Additional analyses showed that age moderated the associations between SCD and positive and negative psychological well-being. A high level of SCD was associated with lower positive and higher negative psychological well-being for both young and older adults. However, this effect was significantly more pronounced in older adults. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age and sex differences in strategies of coping and defense across the life span.

Age and sex differences in the use of coping and defense strategies were examined in a life-span sample of 381 individuals. Participants responded to 2 self-report measures assessing mechanisms of coping and defense and measures assessing their level of cognitive complexity. Older adults used a combination of coping and defense strategies indicative of greater impulse control and the tendency to positively appraise conflict situations. Adolescents and younger adults used strategies that were outwardly aggressive and psychologically undifferentiated, indicating lower levels of impulse control and self-awareness. Women used more internalizing defenses than men and used coping strategies that flexibly integrated intra- and interpersonal aspects of conflict situations. Taken together, findings provide evidence for the age- and sex-specific use of strategies of coping and defense, suggesting that men and women may face different developmental tasks in the process toward maturity in adulthood. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Emotional experience in everyday life across the adult life span.

Age differences in emotional experience over the adult life span were explored, focusing on the frequency, intensity, complexity, and consistency of emotional experience in everyday life. One hundred eighty-four people, age 18 to 94 years, participated in an experience-sampling procedure in which emotions were recorded across a 1-week period. Age was unrelated to frequency of positive emotional experience. A curvilinear relationship best characterized negative emotional experience. Negative emotions declined in frequency until approximately age 60, at which point the decline ceased. Individual factor analyses computed for each participant revealed that age was associated with more differentiated emotional experience. In addition, periods of highly positive emotional experience were more likely to endure among older people and periods of highly negative emotional experience were less stable. Findings are interpreted within the theoretical framework of socioemotional selectivity theory. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Personality and obesity across the adult life span.

Personality traits contribute to health outcomes, in part through their association with major controllable risk factors, such as obesity. Body weight, in turn, reflects our behaviors and lifestyle and contributes to the way we perceive ourselves and others. In this study, the authors use data from a large (N = 1,988) longitudinal study that spanned more than 50 years to examine how personality traits are associated with multiple measures of adiposity and with fluctuations in body mass index (BMI). Using 14,531 anthropometric assessments, the authors modeled the trajectory of BMI across adulthood and tested whether personality predicted its rate of change. Measured concurrently, participants higher on Neuroticism or Extraversion or lower on Conscientiousness had higher BMI; these associations replicated across body fat, waist, and hip circumference. The strongest association was found for the impulsivity facet: Participants who scored in the top 10% of impulsivity weighed, on average, 11Kg more than those in the bottom 10%. Longitudinally, high Neuroticism and low Conscientiousness, and the facets of these traits related to difficulty with impulse control, were associated with weight fluctuations, measured as the variability in weight over time. Finally, low Agreeableness and impulsivity-related traits predicted a greater increase in BMI across the adult life span. BMI was mostly unrelated to change in personality traits. Personality traits are defined by cognitive, emotional, and behavioral patterns that likely contribute to unhealthy weight and difficulties with weight management. Such associations may elucidate the role of personality traits in disease progression and may help to design more effective interventions. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Individual differences in cross-sectional and 3-year longitudinal memory performance across the adult life span.

Reports individual differences analyses of performance on list and prose memory tasks for 250 men and 258 women (aged 55–84 yrs). Being retested, higher reasoning and vocabulary scores, and female gender predicted better prose recall and list recognition performance. For list recall, retest status, age, years of schooling, and gender, as well as reasoning and vocabulary, were reliable independent predictors. After 3 yrs, 106 men and 121 women returned for a retest. Analysis of individual differences in 3-yr performance indicated that, once Time 1 performance had been partialed, individual change could be predicted by age or reasoning, but neither variable uniquely accounted for change. Analysis of data of individuals who experienced considerable decline or improvement in 3-yr scores indicated that decline was consistently associated with advanced age. Ramifications for theoretical models in memory research are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Adults' conceptions of intelligence across the adult life span.

To examine whether young, middle-aged, and older adults view the concept of intelligent person as similar or different during adulthood, 140 adults of various ages rated how likely it would be for individuals of average and exceptional intelligence at 30, 50, and 70 yrs of age to be engaged in behaviors previously identified by adults as characterizing adult intelligence. Adults perceived more similarity between exceptionally intelligent prototypes of closer ages (i.e., 30 and 50 yrs; 50 and 70 yrs). Intelligence was perceived to consist of interest and ability to deal with novelty, everyday competence, and verbal competence (dimensions that were perceived to be differentially important for different-aged prototypes and by individuals of different ages). Participants' conceptions also included the idea that intelligence is malleable and that abilities differentially increase or decrease across the life span. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The salience of emotion across the adult life span.

Recent research on emotion has rendered equivocal traditional views of diminished emotionality in late life. This study focused on the salience of emotion in 83 Ss aged 20–83 yrs. Using an incidental memory paradigm, Ss read a narrative containing equivalent amounts of emotional and neutral information. Salience was measured by the proportion of emotional versus neutral phrases recalled at the end of a 1-hr experimental session. Contrary to models of diminished emotionality, results suggest that the relative salience of emotion increases linearly with age and cohort. Results are discussed within the framework of cognitive theories of adult development and socioemotional selectivity theory. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A meta-analysis of normal and disordered personality across the life span.

Debate continues about whether personality, both normal and disordered, can change significantly or is mainly stable across the life span. One issue that receives little attention is the degree to which personality stability coefficients may be influenced by attenuation due to measurement error. The current meta-analysis examines the data from recent research on personality stability, reporting both uncorrected and corrected stability coefficients. Attenuation due to measurement error was found to cause a significant reduction in personality stability coefficients, raising the possibility that some studies may conflate personality change with measurement error. Overall, corrected stability coefficients suggested that the stability of personality across adulthood is high, with only modest change. By contrast, personality during childhood is significantly more changeable. Both normal personality and personality disorders were highly stable across the life span, and patients in therapy experienced no more personality change than did nonpatients. Cross-cultural comparisons suggested relatively similar levels of personality stability cross-culturally, although personality stability among people in South Pacific nations is slightly lower than among those in the United States, Canada, or European nations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Gender differences in personality traits across cultures: Robust and surprising findings.

Secondary analyses of Revised NEO Personality inventory data from 26 cultures (N =23,031) suggest that gender differences are small relative to individual variation within genders; differences are replicated across cultures for both college-age and adult samples, and differences are broadly consistent with gender stereotypes: Women reported themselves to be higher in Neuroticism, Agreeableness, Warmth, and Openness to Feelings, whereas men were higher in Assertiveness and Openness to Ideas. Contrary to predictions from evolutionary theory, the magnitude of gender differences varied across cultures. Contrary to predictions from the social role model, gender differences were most pronounced in European and American cultures in which traditional sex roles are minimized. Possible explanations for this surprising finding are discussed, including the attribution of masculine and feminine behaviors to roles rather than traits in traditional cultures. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Motives in American men and women across the adult life span.

The stability and change in four social motives (achievement, affiliation, fear of weakness, hope of power) over the adult life cycle were investigated in two surveys representative of the American population. One sample of 1,363 respondents was drawn in 1957; the other of 1,208 respondents, in 1976. Motives were assessed by established procedures that coded thematic apperceptive content for motivational imagery. Some age differences in motives were evident in both samples: Women's achievement and affiliation motives decline in older ages; men's hope of power is distinctly high at mid-life. These major age effects were found to depend on work and family patterns. By and large, however, the strength of the motives is remarkably similar over different age groups. Year and education differences moderate some of these results. Although not robust, indications of some cohort stability in certain motives emerge. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Models of visuospatial and verbal memory across the adult life span.

The authors investigated the distinctiveness and interrelationships among visuospatial and verbal memory processes in short-term, working, and long-term memories in 345 adults. Beginning in the 20s, a continuous, regular decline occurs for processing-intensive tasks (e.g., speed of processing, working memory, and long-term memory), whereas verbal knowledge increases across the life span. There is little differentiation in the cognitive architecture of memory across the life span. Visuospatial and verbal working memory are distinct but highly interrelated systems with domain-specific short-term memory subsystems. In contrast to recent neuroimaging data, there is little evidence for dedifferentiation of function at the behavioral level in old compared with young adults. The authors conclude that efforts to connect behavioral and brain data yield a more complete understanding of the aging mind. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The structure of working memory abilities across the adult life span.

The present study addresses three questions regarding age differences in working memory: (1) whether performance on complex span tasks decreases as a function of age at a faster rate than performance on simple span tasks; (2) whether spatial working memory decreases at a faster rate than verbal working memory; and (3) whether the structure of working memory abilities is different for different age groups. Adults, ages 20–89 (n = 388), performed three simple and three complex verbal span tasks and three simple and three complex spatial memory tasks. Performance on the spatial tasks decreased at faster rates as a function of age than performance on the verbal tasks, but within each domain, performance on complex and simple span tasks decreased at the same rates. Confirmatory factor analyses revealed that domain-differentiated models yielded better fits than models involving domain-general constructs, providing further evidence of the need to distinguish verbal and spatial working memory abilities. Regardless of which domain-differentiated model was examined, and despite the faster rates of decrease in the spatial domain, age group comparisons revealed that the factor structure of working memory abilities was highly similar in younger and older adults and showed no evidence of age-related dedifferentiation. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Body image across the life span in adult women: The role of self-objectification.

This study aimed to investigate women's body image across the entire life span from within the theoretical perspective provided by objectification theory (B. L. Fredrickson & T.-A. Roberts, 1997). In a cross-sectional study, a sample of 322 women ranging in age from 20 to 84 years completed a questionnaire measuring body dissatisfaction, self-objectification, and its proposed consequences. Although body dissatisfaction remained stable across the age range, self-objectification, habitual body monitoring, appearance anxiety, and disordered eating symptomatology all significantly decreased with age. Self-objectification was found to mediate the relationship between age and disordered eating symptomatology. It was concluded that objectification theory helps clarify the processes involved in the changes in body image that occur with age. (PsycINFO Database Record (c) 2010 APA, all rights reserved)