A behavior-genetic study of parenting quality, infant attachment security, and their covariation in a nationally representative sample.

A number of relatively small-sample, genetically sensitive studies of infant attachment security have been published in the past several years that challenge the view that all psychological phenotypes are heritable and that environmental influences on child development--to the extent that they can be detected--serve to make siblings dissimilar. Using the twin subsample (N = 485 same-sex pairs) of the nationally representative Early Childhood Longitudinal Study--Birth Cohort, the authors provide evidence that parenting quality and infant attachment security observed at 24 months, as well as their covariation, are a product of shared and nonshared environmental (but not genetic) variation among children. In contrast, genetic differences between infants played a prominent role in explaining observations of temperamental dependency. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relational schemas and the developing self: Perceptions of mother and of self as joint predictors of early adolescents' self-esteem.

This 1-year longitudinal study examined early adolescents' (N=278, age 11-13 years) perceptions of their mother's behavior (affection, knowledge of child's activities, and psychological control) and of how they react to their mother (trust in mother, defiance, and debilitation) as predictors of self-esteem among peers. Perceived maternal affection predicted self-esteem for girls; perceived psychological control forecast lower self-esteem for boys. Perceptions of self as untrusting, defiant, or debilitated led to lower self-esteem. Furthermore, perceived maternal behavior interacted with perceived self-reactions to predict self-esteem: Perceived debilitation led to reduced self-esteem only under high perceived maternal psychological control; perceived defiance predicted lower self-esteem only under low perceived maternal knowledge. The prediction of self-esteem is clearly enhanced when perceived self-reactions are included along with perceived maternal behavior as predictors. Combinations of perceived maternal behavior and perceived self-reactions--relational schemas--warrant increased attention as possible influences on the developing self. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Individual differences in executive functions are almost entirely genetic in origin.

Recent psychological and neuropsychological research suggests that executive functions--the cognitive control processes that regulate thought and action--are multifaceted and that different types of executive functions are correlated but separable. The present multivariate twin study of 3 executive functions (inhibiting dominant responses, updating working memory representations, and shifting between task sets), measured as latent variables, examined why people vary in these executive control abilities and why these abilities are correlated but separable from a behavioral genetic perspective. Results indicated that executive functions are correlated because they are influenced by a highly heritable (99%) common factor that goes beyond general intelligence or perceptual speed, and they are separable because of additional genetic influences unique to particular executive functions. This combination of general and specific genetic influences places executive functions among the most heritable psychological traits. These results highlight the potential of genetic approaches for uncovering the biological underpinnings of executive functions and suggest a need for examining multiple types of executive functions to distinguish different levels of genetic influences. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Responses to formal performance appraisal feedback: The role of negative affectivity.

This study examined the effects of performance appraisal feedback on job and organizational attitudes of tellers (N=329) in a large international bank. Negative affectivity moderated the link between favorable appraisal feedback and job attitudes. Among the higher rated performers, attitudes were improved 1 month after being notified of favorable appraisal results (Time 2). Improved attitudes persisted 6 months after the performance appraisal (Time 3) among tellers with low negative affectivity but not among those with high negative affectivity. Among the lower rated performers, mean levels of attitudes did not change significantly during the study. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Generalized self-efficacy, self-esteem, and negative affect.

In order to help resolve the ongoing debate about the relationship between and the functions of self-esteem and generalized self-efficacy (GSE), the authors tested the hypotheses that GSE predicts future self-esteem and that self-esteem predicts unique incremental variance in future negative affect. Measures of these three constructs were administered to two samples of undergraduates (N = 160 and N = 75) twice over five-six weeks. Time 1 GSE accounted for significant variance in Time 2 self-esteem in both studies, 1.6% of the variance in Study 1 and 4.6% of the variance in Study 2, after controlling for Time 1 self-esteem. Time 1 self-esteem did not predict Time 2 GSE in either study. Self-esteem accounted for significant variance in negative affect in Study 1. Results suggest that GSE and self-esteem are distinct, that GSE may play a role in the development of self-esteem, and that self-esteem may help shape negative affect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A bifactor model of negative affectivity: Fear and distress components among younger and older youth.

The Positive and Negative Affect Schedule for Children (PANAS-C) is a 27-item youth-report measure of positive affectivity and negative affectivity. Using 2 large school-age youth samples (clinic-referred sample: N = 662; school-based sample: N = 911), in the present study, we thoroughly examined the structure of the PANAS-C NA and PA scales and fit a bifactor model to the PANAS-C NA items. Our exploratory factor analytic results demonstrated that negative affectivity is comprised of 2 main components—NA: Fear and NA: Distress—specifically among older youth. A bifactor model also evidenced the best model fit relative to a unidimensional and second-order factor structure of the PANAS-C NA items. The NA: Fear group factor evidenced significant correspondence with external criterion measures of anxiety. However, the original PANAS-C NA scale evidenced equal (and in some cases greater) correspondence with criterion measures of anxiety. We thus recommend continued usage and interpretation of the full PANAS-C NA scale despite the identification of the fear and distress group factors underlying general negative affectivity. The identification of these fear and distress group factors nonetheless suggest that negative affectivity may be comprised largely of a fear and distress component among older youth. The implications of these findings are discussed in relation to better understanding the structure of psychopathology across childhood development and informing the development of future treatments of negative emotions. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Effects of psychosocial and situational variables on substance abuse among homeless adults.

Finding direct and indirect influences of salient psychosocial and situational variables on problem substance use among homeless people is important in designing evidence-based, effective, and relevant interventions for this special population. A stress-coping paradigm in conjunction with situational items specialized for homeless people was used to explore predictive relationships in a sample of homeless adults (N = 664) among (a) psychosocial variables of self-esteem, social support, positive and negative coping, and emotional distress, (b) situational variables of homelessness history and quality of recent housing, and (c) outcomes of alcohol use, injection drug use (IDU), and non-IDU. Lower self-esteem predicted greater emotional distress, lower positive coping, greater negative coping, and more alcohol use. Social support predicted less emotional distress and more positive coping. Chronic homelessness predicted more emotional distress, less positive coping, greater alcohol use, and IDU. Poor housing was associated with more alcohol use and IDU. Substance abuse interventions among the homeless should have a dual focus that includes attention to psychological issues and negative coping patterns while also addressing situational, environmental factors, including encouraging provision of permanent supportive housing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The contributions of attributional style, expectancies, depression, and self-esteem in a cognition-based depression model.

Used structural equation modeling to examine the relations among attributional style (AS), outcome expectancies for future life-events, depression, and self-esteem among 195 college students. Ss completed questionnaires assessing AS, outcome expectancies, depression, and self esteem. Consistent with the hopelessness and self-regulation theories of depression, the 1st series of models illustrated that positive attributional styles (PAS) and negative attributional styles (NAS) had direct influences on expectancies, and that expectancies had a direct influence on depression. An NAS influenced depression independent of one's expectancies for the future. A 2nd series of models, which included the latent construct of self-esteem, showed that the previously modeled relations showing a PAS and an NAS having direct influence on expectancies and expectancies having a direct inverse effect on depression remained consistent. A PAS had an indirect positive influence on self-esteem via expectancies. A PAS also had a direct positive effect on self-esteem, an unexpected finding according to self-regulation theory. The final model also showed that self-esteem was inversely influenced by depression. A LISREL correlation matrix is appended. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Toddler and childhood temperament: Expanded content, stronger genetic evidence, new evidence for the importance of environment.

Using samples of twins and singletons totaling 715 individuals, the authors document heritable influences on various temperamental dimensions during the toddler and preschooler age ranges, which have been somewhat understudied relative to infants and older adolescents. In contrast to instruments on which prior literature is based, the Toddler Behavior Assessment Questionnaire and the Children's Behavior Questionnaire offer assessment of positive affectivity (separately from negative affectivity) and of emotional regulation. Positive affect reveals substantial shared environmental influence, and emotion regulation reveals additive genetic influence. Evidence for genetic variance in temperament is strengthened because intraclass correlations from many of these questionnaire scales show no evidence of "too-low" dizygotic correlations that imply contrast effects. Suggestive evidence is offered that psychometric characteristics of the questionnaires can affect biometric inferences. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Self-esteem in schizophrenia: Relationships between self-evaluation, family attitudes, and symptomatology.

Participants with schizophrenia (N=59) were assessed on self-evaluation, symptomatology, and positive and negative affect (expressed emotion) from significant others. An interview-based measure of self-evaluation was used and two independent dimensions of self-esteem were derived: negative and positive evaluation of self. As predicted, negative self-evaluation was strongly associated with positive symptoms, a more critical attitude from family members was associated with greater negative self-evaluation, and analyses supported a model whereby the impact of criticism on patients' positive symptoms was mediated by its association with negative self-evaluation. The interview-based method of self-esteem assessment was found to be superior to the questionnaire because its predictive effects remained after depressed mood was accounted for. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Genetic and environmental effects on daily life stressors: More evidence for greater variation in later life.

People vary in the occurrence and perceived severity of stressors experienced in their daily lives. In the current study, the authors examined the extent to which individual differences in these relatively minor occurrences are determined by genetic endowment as well as environmental influences and how these effects vary by age. Identical (npairs = 111) and fraternal (npairs = 99) twin adults ranging from 25 to 73 years old reported the occurrence and severity of their daily stressors on 8 consecutive evenings. Both genetic and unique environmental effects accounted for the variance in stressor occurrence, whereas shared family and unique environmental effects accounted for the variance in the perceived severity of these stressors. In addition, the influence of unique environment on perceived stress exerted a stronger influence among the older adults than the younger adults. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age, smoking, and negative affectivity as predictors of sleep patterns among shiftworkers in two environments.

Although adaptation to shiftwork has been widely studied, little is known about how individual and environmental factors combine to influence sleep among shiftworkers. This study examined age, smoking, and negative affectivity (NA) as predictors of sleep duration and quality for 3 work phases (day shifts, DS; night shifts, NS; and leave periods, LP). Data were collected from personnel working 12-hr shifts, onshore (n = 330) or offshore (n = 456). Individual factors predicted patterns of sleep measures across the DS, NS, and LP phases onshore, but not offshore; onshore, work phase interacted with smoking and with age to predict sleep duration and with NA to predict sleep quality. The role of the offshore environment in shiftwork adaptation is discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cognitive correlates of emotional traits: Perceptions of self and others.

Two studies examined how individuals' perceptions of self and others are associated with different emotional traits. Study 1 (N = 386) used structural equation modeling of questionnaire data to examine the relations between emotional traits (i.e., affect intensity, affect variability, and trait pleasant and unpleasant affect) and self- and other-perceptions (i.e., self-instability, self-esteem, other-instability, and perceived treatment by others). Study 2 (N = 99) used path analyses of data collected using an event sampling method in which online measures of emotional experiences (i.e., intensity, frequency, and variability of pleasant and unpleasant affect) as well as perceptions of self and others (i.e., self-instability, self-esteem, other-instability, perceived treatment by others) were collected. The strongest and most consistent finding was that affect variability was associated with both self- and other-instability. The results linking affect intensity with self- and other-instability were limited to negative intensity. There was also evidence of pleasant affect being associated with both self-esteem and perceived treatment by others, and unpleasant affect being associated with self-esteem and other-instability. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Global self-esteem in relation to structural models of personality and affectivity.

Three studies examined global self-esteem in relation to structural models of personality and affectivity. In every study, self-esteem was strongly negatively correlated with Neuroticism/Negative Affectivity and moderately to strongly related to Extraversion/Positive Affectivity. Additional findings, however, revealed that self-esteem is better viewed at the lower order level. For instance, global self-esteem correlated -.79 with the Depression facet of the Revised NEO Personality Inventory (P. T. Costa, Jr., & R. R. McCrae, 1992) in Study 3. Moreover, confirmatory factor analyses produced very strong correlations between self-esteem and depression in both Study 2 (r = -.82) and Study 3 (r = -.86). Taken together, the data suggest that global self-esteem measures define one end of a bipolar continuum, with trait indicators of depression defining the other. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The ABCs of math: A genetic analysis of mathematics and its links with reading ability and general cognitive ability.

The goal of this first major report from the Western Reserve Reading Project Math component is to explore the etiology of the relationship among tester-administered measures of mathematics ability, reading ability, and general cognitive ability. Data are available on 314 pairs of monozygotic and same-sex dizygotic twins analyzed across 5 waves of assessment. Univariate analyses provide a range of estimates of genetic (h2 = .00–.63) and shared (c2 = .15–.52) environmental influences across math calculation, fluency, and problem solving measures. Multivariate analyses indicate genetic overlap between math problem solving with general cognitive ability and reading decoding, whereas math fluency shares significant genetic overlap with reading fluency and general cognitive ability. Further, math fluency has unique genetic influences. In general, math ability has shared environmental overlap with general cognitive ability and decoding. These results indicate that aspects of math that include problem solving have different genetic and environmental influences than math calculation. Moreover, math fluency, a timed measure of calculation, is the only measured math ability with unique genetic influences. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Genetics of verbal working memory processes: A twin study of middle-aged men.

Genetic and environmental influences on cognitive components of reading span in 345 middle-aged male twin pairs were examined. Shared variance among word recognition (reading only), digits forward (short-term memory only), and reading span (concurrent reading plus memory) was almost entirely mediated by common genetic influences. Overall heritability was .52 for word recognition, .27 for digits forward, and .51 for reading span. All of the genetic influences on word recognition and digits forward, but only about one-half of the genetic influences on reading span, came from a common latent phenotype. The genetic influences that were specific to reading span were concluded to most likely reflect an executive function component. Implications for genetic studies of aging and prefrontal brain function are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Self-esteem, construal, and comparisons with the self, friends, and peers.

Extending the better than average effect, 3 studies examined self-, friend, and peer comparisons of personal attributes. Participants rated themselves as better off than friends, who they rated as superior to generalized peers. The exception was in direct comparisons, where the self and friends were not strongly differentiated on unambiguous negative attributes. Self-esteem and construal played moderating roles, with persons with high self-esteem (HSEs) exploiting both ambiguous positive and ambiguous negative traits to favor themselves. Persons lower in self-esteem exploited ambiguous positive traits in their favor but did not exploit ambiguous negative traits. Across self-esteem level, ratings of friends versus peers were exaggerated when attributes were ambiguous. HSEs seemed to take advantage of ambiguity more consistently to present favorable self-views; people with low self-esteem used ambiguity to favor their friends but were reluctant to minimize their own faults. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The role of aggressive personality and family relationships in explaining family conflict.

This study investigated whether genetic and environmental influences on global family conflict are explained by parents' personality, marital quality, and negative parenting. The sample comprised 876 same-sex pairs of twins, their spouses, and one adolescent child per twin from the Twin and Offspring Study in Sweden. Genetic influences on aggressive personality were correlated with genetic influences on global family conflict. Nonshared environmental influences on marital quality and negative parenting were correlated with nonshared environmental influences on global family conflict. Results suggest that parents' personality and unique experiences within their family relationships are important for understanding genetic and environmental influences on global conflict in the home. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Genetic variation and covariation in the original and restructured clinical scales of the MMPI.

The authors investigated genetic variation and covariation among the original Minnesota Multiphasic Personality Inventory clinical and validity scales and the restructured clinical scales. Variation in most of these scales was best explained by a combination of moderate genetic influences and environmental influences not shared by cotwins. Genetic correlations among the standard clinical scales were generally substantial and positive (M = .48), whereas genetic correlations between the clinical scales and the K scale were strong and negative. The restructured clinical scales were strongly correlated with the general Demoralization scale (M = .55), with lower genetic correlations among the remaining scales (M = .39). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Compartmentalization of positive and negative self-knowledge: Keeping bad apples out of the bunch.

Three studies examined whether categorical organization of knowledge about the self explains variance in self-esteem and depression beyond that which is accounted for by sheer amount of positive or negative content. Compartmentalization is the tendency to organize positive and negative knowledge about the self into separate, uniformly valenced categories (self-aspects). As long as positive self-aspects are activated, access to negative information should be minimized. Compartmentalization was associated with high self-esteem and low depression scores for individuals whose positive self-aspects were important; when negative self-aspects were important, compartmentalization was correlated with low self-esteem and high depression scores. An analysis of self-aspect labels showed that individuals with compartmentalized organization define negative self-aspects in especially narrow terms. A possible relationship between compartmentalized organization and cognitive complexity is discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)