Reaching while walking: Reaching distance costs more than walking distance

Surprisingly little is known about how people plan and control everyday physical actions, such as walking along and picking up objects. In order to explore this topic, we conducted an experiment in which university students were asked to pick up a common object (a child’s beach bucket) that stood on a table several meters from the participant’s start position. The bucket stood either on the left side, in the middle, or on the right side of the table and, depending on instructions, was to be carried to a farther target whose horizontal position was also varied. The questions were which side of the table the participant would walk along when picking up the bucket and which hand the participant would use to pick up and carry the bucket. Participants, most of whom were righthanded, preferred to walk along the left side of the table and to pick up the bucket with the right hand, although they departed from that preference when the reaching distance across the table was uncomfortable or if the target was too far to the right. The data were well fit with a mathematical model that included a right-hand bias and an estimate of functional distance that expressed the cost of reaching over some distance as approximately twice the cost of walking over the same distance.     

False recency and false fame of faces in young adulthood and old age

Studies of age differences in face recognition have shown age-related increases in false-alarm errors: elderly persons exceed young adults in judging new faces to be old. To distinguish among theoretical accounts of this finding, we compared young and elderly subjects in two recognition tasks: (1) that of judging whether faces were recent or nonrecent, and (2) that of judging whether faces were famous or nonfamous. The major independent variable was prior presentation of faces-including nonrecent and nonfamous foils-1 week before the test. False recent judgments in response to nonrecent faces and false famous judgments in response to nonfamous faces were higher among the elderly. Moreover, these age-related differences in false-alarm rates were larger for faces viewed 1 week previously than for entirely new faces. The findings suggest that, compared to young adults, older individuals rely relatively more on perceived familiarity, and relatively less on recollection of context, in making recognition decisions.     

Everyday problem solving in adulthood and old age

We examined everyday problem solving in adulthood and compared it with traditional measures of cognitive abilities. In the first phase of the research, we describe the construction of an inventory to assess problem solving in situations that adults might encounter in everyday life and examine raters' judgments of effective responses to the problems. In the second phase, adults (N = 126) between the ages of 20 and 78 were administered the inventory and tests of verbal and abstract problem-solving abilities. Results indicated modest but significant positive correlations between performance on the inventory and traditional ability tests. The examination of age differences revealed that performance on the Everyday Problem-Solving Inventory and verbal ability test increased with age, whereas performance on a traditional problem-solving test declined after middle age. In addition, education was unrelated to everyday problem solving, highly related to verbal ability, and moderately related to traditional problem solving. Results are discussed in relation to pluralistic conceptions of intelligence and theories of adult intellectual development.     

Intelligence and spontaneous flexibility in adulthood and old age

Interrelationships among measures of intelligence and spontaneous flexibility were examined at two age levels using a multitrait-multimethod matrix design and other multivariate procedures. Measures of intelligence were Ravens Matrices and WAIS Vocabulary, WAIS Digit Symbol, and WAIS Similarities. Blots, Hidden Pictures, Brick Uses, and Impossibilities were used as measures of spontaneous flexibility. Subjects were 100 younger (X¯= 19.54,S.D.= 1.23) and 100 older (X¯= 63.99,S.D.= 2.94) men and women tested at two occasions. Adult age differences in factor structure were explored using a maximum likelihood analysis; common variances among the measures were greater for the elderly compared to the younger adults. Findings supported a dedifferentiation hypothesis with regard to both intelligence and spontaneous flexibility.     

Cross-sectional age differences and longitudinal age changes of personality in middle adulthood and old age

The present study examines different aspects of personality continuity (or change) in middle adulthood and old age both cross-sectionally and longitudinally. The sample comprised 445 middle-aged (42-46 years) and 420 older (60-64 years) participants, reassessed after a 4-year interval. Personality was measured using the NEO-FFI personality inventory. After having established strict factorial invariance, factor covariances were found to be equal for both age groups and at both testing occasions, indicating perfect structural continuity of personality. A number of age differences in personality emerged at both measurement occasions. Longitudinally, in both age groups, an average decline in Neuroticism was observed. Longitudinal stability coefficients were around .80 in middle-aged and old participants, implying high, but not perfect, differential continuity. With respect to continuity of divergence, statistically significant cross-sectional age differences were found for the variance of Openness at both measurement occasions. Eventually, concerning specific versus general continuity, a variety of medium effect-sized correlated changes in the Big Five personality domains across the 4-year period was established, implying that personality changes share a certain amount of commonality.     

Possible selves in adulthood and old age: a tale of shifting horizons

Young, middle-aged, and elderly adults (N = 308) evaluated themselves on 6 dimensions of psychological well-being according to present, past, future, and ideal self-assessments. Young and middle-aged adults saw considerable improvement in themselves from the past to the present on all dimensions of well-being. The elderly, however, indicated largely a perception of stability with prior levels of functioning. Future ratings showed that the 2 younger groups expected continued gains in the years ahead, whereas the oldest respondents foresaw decline on most aspects of well-being. The comparison of present and ideal self-ratings supported (cross-sectionally) the hypothesis that with age, individuals achieve a closer fit between their ideal and their actual self-perceptions.     

Word associations in old age: evidence for consistency in semantic encoding during adulthood

Word associations of 80 young and 80 older adults were compared for 113 stimulus words. The proportion of paradigmatic responses varied with the grammatical class of the stimulus word and with the vocabulary level of the subject, but not with age. The same proportion of young and older adults gave the most common responses. Although older adults had a greater number of unique responses, this seems to reflect age differences in vocabulary level, as vocabulary but not age was a good predictor. Within-subject variability was also comparable across age, as on a retest young and older adults gave the same proportion of responses that were identical to those on the original test. Both age groups were more likely to repeat common than uncommon responses on the retest. This, together with analyses of response latency, suggests equivalent use of strategic processes across age. The results indicate that semantic structure and semantic encoding in adults are related to verbal ability, but not to age.     

Sex and age group differences in the associations between sleep duration and BMI from adolescence to young adulthood

Objective: We examine concurrent and longitudinal associations between sleep duration (SD) and body mass index (BMI) from adolescence to young adulthood, controlling for physical activity and internalising symptoms. Sex and age group differences (early adolescent group ages 12–15 years and late adolescent group ages 16–18 years) are examined.

Design: A randomly selected community-based sample of youth (N = 662; 48.3% males) were surveyed biannually from 2003 (T1) to 2014 (T6).

Results: We found sex and age group differences for the concurrent and longitudinal associations between SD and BMI. For males, shorter SD at baseline was concurrently related to higher BMI. For females, shorter SD at baseline was associated with longitudinal increases in BMI, for the late adolescent group only.

Conclusion: Findings show that the association between SD and BMI, previously shown in childhood, continues to be significant in adolescence and young adulthood. Developmentally appropriate and sex-specific strategies for motivating and supporting healthy sleep habits in adolescence that may help to prevent weight gain into young adulthood are discussed.     

Pathways of peer relationships from childhood to young adulthood

This study examined trajectories of peer social preference during childhood and personality assessed in early adolescence in relation to trajectories of friendship quality during early adulthood. Participants (N = 585) were followed from ages 5 to age 23. At ages 5 to 8, peers provided sociometric nominations; at age 12 participants reported their own personality characteristics; from ages 19 to 23 participants rated their friendship quality. Latent growth modeling revealed that trajectories characterized by high levels of childhood peer social preference were related to trajectories characterized by high levels of early adulthood friendship quality. Early adolescent personality characterized by extraversion and conscientiousness predicted higher friendship quality at age 19, and conscientiousness predicted change in friendship quality from ages 19 to 23. This study demonstrates that peer relationships show continuity from childhood to early adulthood and that qualities of core personality are linked to the development of adult friendships.     

Age comparative factor analysis of ability variables in adulthood and old age

The generality of ability factor structure in adulthood and old age was investigated using simultaneous maximum likelihood procedures. Data were analyzed for 198 young individuals (age range of 15–32 years), 156 younger old individuals (age range of 53–68 years), and 156 older old individuals (69–91 years). Variables were nine tests marking three ability factors: Verbal Comprehension, Sensitivity to Problems and Semantic Redefinition. Results indicated no changes in the number of factors and no psychologically important shifts in salient factor loadings. Increasingly larger factor covariances, however, were obtained in the two older groups. The results supported the generalizability of ability structures to late life at the level of factor loadings. The implications of these results for the dedifferentiation hypothesis were not clear cut. The consistency of the number of factors across age groups precluded strong support for this hypothesis, The increased factor covariances could be construed as modest support for this hypothesis, but other interpretations were possible.     

Transition to young adulthood: A prospective study

In this paper, the authors report on the transition to young adulthood (18-25) in the highest functioning 18 individuals in our cohort (GAF 90) from a prospective longitudinal study of 76 lives followed from birth. These 18 individuals provide as clear a view as possible into the inner lives of people least distorted by psychopathology. This gives us a more crystalline photograph of psychic structure: the precipitant of family, society and psyche itself. Using a standard DSM IV criterion, Global Assessment Functioning (GAF), provides phenomenological homogeneity, but leaves us with heterogeneity of inner life. The 18 individuals had relatively rare drug or alcohol use and less sexual partners. Vocational functioning exceeded intimacy. Four had tumultuous pathways into adulthood. Nine were crossover cases, coming from sub-optimal mothering, with significant variation in gender distribution and intrapsychic structure. The paper discusses factors facilitating and inhibiting development and the nature of memories.     

Cognitive emotion regulation in adulthood and old age: positive gaze preferences across two strategies

While positive emotional functioning may be enhanced across adulthood and old age, research is mixed as to the types of regulatory strategies that are more or less beneficial for facilitating well-being. The goal of the present study was to examine how specific cognitive emotion regulation strategies assumed to rely on varying levels of effortful processing (selective attention vs. reappraisal) would impact regulatory behaviors (via eye gaze deployment) and resultant affective outcomes. Participants viewed a series of positive, negative, and neutral film clips while their eyes were tracked across three conditions: passive viewing, selective attention, and reappraisal. Results revealed that (a) both younger and older adults displayed positive fixation preferences and showed mood improvement across both regulatory conditions and (b) there was a marginal association between positive fixation and post-regulation mood. Implications for linking positivity to emotion regulation and well-being across adulthood are discussed.     

Etiological contributions to heavy drinking from late adolescence to young adulthood

The authors examined genetic and environmental contributions to stability and change in heavy drinking from late adolescence to young adulthood in a sample of 1,152 twin pairs. In men, heavy drinking was similarly heritable at ages 17 (h2=.57) and 20 (h2=.39), and its stability owed primarily to common genetic factors. In women, heavy drinking was less heritable than in men at ages 17 (h2=.18) and 20 (h2=.30) and its stability was primarily due to enduring shared environmental influences. P3 amplitude, an event-related brain potential marker of alcoholism risk, was less predictive of heavy drinking in women than in men, providing further support for the proposition that biological factors have less impact on heavy drinking in young adult women than in young adult men.     

The costs of doing two things at once for young and older adults: talking while walking,finger tapping,and ignoring speech or noise

Young and older adults provided language samples in response to questions while walking, finger tapping, and ignoring speech or noise. The language samples were scored on 3 dimensions: fluency, complexity, and content. The hypothesis that working memory limitations affect speech production by older adults was tested by comparing baseline samples with those produced while the participants were performing the concurrent tasks. There were baseline differences: Older adults' speech was less fluent and less complex than young adults' speech. Young adults adopted a different strategy in response to the dual-task demands than older adults: They reduced sentence length and grammatical complexity. In contrast, older adults shifted to a reduced speech rate in the dual-task conditions.     

Race-ethnic inequality and psychological distress: depressive symptoms from adolescence to young adulthood

Social inequality is well established in the mental health of race-ethnic groups, but little is known about this disparity from adolescence to young adulthood. This study examined differences in trajectories of depressive symptoms across 4 race-ethnic groups (Whites, Blacks, Hispanics, and Asians) using 3 waves of the National Longitudinal Study of Adolescent Health. Latent trajectory analyses showed race-ethnic variations among both females and males. Stressors were significantly related to depressive symptoms for all study members, but they accounted for symptom trajectories only among Black males and minority females. Persistent differences in trajectories for Blacks and Whites showed parallel slopes that did not converge over time. Neither background characteristics nor social resources (i.e., social support) altered this gap. However, social support represents a potential equalizer of these race-ethnic differences, owing to the ubiquitous nature of its protective effects.     

Body dissatisfaction from adolescence to young adulthood: Findings from a 10-year longitudinal study

Given mixed findings regarding the unique trajectories of female and male adolescents’ body dissatisfaction over time, comprehensive longitudinal examinations are needed. This 10-year longitudinal, population-based study, with 1902 participants from diverse ethnic/racial and socioeconomic backgrounds in the Minneapolis/St. Paul metropolitan area, examined changes in body dissatisfaction from adolescence to young adulthood. Results revealed that: (a) female and male participants’ body dissatisfaction increased between middle and high school, (b) body dissatisfaction increased further during the transition to young adulthood, and (c) this increase was associated with an increase in BMI over time, such that the upward trend in body dissatisfaction became nonsignificant when BMI was controlled. These results highlight a trend in which diverse female and male youth are increasingly dissatisfied with their bodies as their BMI increases from middle school to young adulthood, and emphasize the need for targeted prevention efforts to intervene in this trajectory and mitigate potential harm.     

Young and old faces in young and old heads: the factor of age in face recognition.

Research on aging and face recognition has shown age-related differences that are reflected most clearly in false-alarm errors. Elderly subjects exceed young adults in false recognitions that new faces are "old." To determine if this difference between young and elderly subjects might differ for young versus elderly faces, an experiment was conducted in which half of the young and elderly subjects studied and recognized young and middle-aged faces, and the remainder studied and recognized middle-aged and elderly faces. Replicating prior research, age-related deficits in recognition accuracy (d') were reduced with older faces, and this effect generalized from measures of face recognition to measures of face-picture recognition. However, the age-related increase in false recognitions of faces was not affected by face age.     

Empathic accuracy: age differences from adolescence into middle adulthood

ABSTRACT

This study investigated age differences in empathic accuracy, the ability to correctly perceive others’ emotions, in a sample of 151 boys and men from three age groups: adolescents (M_age?=?16 years, SD?=?1.04), young adults (M_age?=?29 years, SD?=?2.78), and middle-aged adults (M_age?=?50 years, SD?=?3.07). All participants viewed nine newly developed film clips, each depicting a boy or a man reliving one of three emotions (anger, sadness, or happiness), while talking about an autobiographical memory. Adolescents and middle-aged men were less accurate than young men, and these age differences were associated with parallel age differences in fluid-mechanical abilities. In addition, age differences in vocabulary, one indicator of crystallized-pragmatic intelligence, were associated with age differences in empathic accuracy in adolescent and young, but not middle-aged, men. Within the limitations of cross-sectional data, this study provides evidence for the idea that empathic accuracy is an effortful task that requires cognitive resources and, thus, may show a normative increase until young adulthood followed by periods of stability and decline in subsequent decades.