Modeling the Covariance Structure of Complex Datasets Using Cognitive Models: An Application to Individual Differences and the Heritability of Cognitive Ability

Understanding individual differences in cognitive performance is an important part of understanding how variations in underlying cognitive processes can result in variations in task performance. However, the exploration of individual differences in the components of the decision process—such as cognitive processing speed, response caution, and motor execution speed—in previous research has been limited. Here, we assess the heritability of the components of the decision process, with heritability having been a common aspect of individual differences research within other areas of cognition. Importantly, a limitation of previous work on cognitive heritability is the underlying assumption that variability in response times solely reflects variability in the speed of cognitive processing. This assumption has been problematic in other domains, due to the confounding effects of caution and motor execution speed on observed response times. We extend a cognitive model of decision‐making to account for relatedness structure in a twin study paradigm. This approach can separately quantify different contributions to the heritability of response time. Using data from the Human Connectome Project, we find strong evidence for the heritability of response caution, and more ambiguous evidence for the heritability of cognitive processing speed and motor execution speed. Our study suggests that the assumption made in previous studies—that the heritability of cognitive ability is based on cognitive processing speed—may be incorrect. More generally, our methodology provides a useful avenue for future research in complex data that aims to analyze cognitive traits across different sources of related data, whether the relation is between people, tasks, experimental phases, or methods of measurement.     

Person‐specific versus multilevel autoregressive models: Accuracy in parameter estimates at the population and individual levels

This paper compares the multilevel modelling (MLM) approach and the person‐specific (PS) modelling approach in examining autoregressive (AR) relations with intensive longitudinal data. Two simulation studies are conducted to examine the influences of sample heterogeneity, time series length, sample size, and distribution of individual level AR coefficients on the accuracy of AR estimates, both at the population level and at the individual level. It is found that MLM generally outperforms the PS approach under two conditions: when the sample has a homogeneous AR pattern, namely, when all individuals in the sample are characterized by AR processes with the same order; and when the sample has heterogeneous AR patterns, but a multilevel model with a sufficiently high order (i.e., an order equal to or higher than the maximum order of individual AR patterns in the sample) is fitted and successfully converges. If a lower‐order multilevel model is chosen for heterogeneous samples, the higher‐order lagged effects are misrepresented, resulting in bias at the population level and larger prediction errors at the individual level. In these cases, the PS approach is preferable, given sufficient measurement occasions (T ≥ 50). In addition, sample size and distribution of individual level AR coefficients do not have a large impact on the results. Implications of these findings on model selection and research design are discussed.     

Nostalgia in response to group‐based exclusion: The role of attachment‐related avoidance

We proposed that nostalgia, by virtue of its sociality, can be an indirect strategy to counteract relational deficiencies stemming from group‐based exclusion. We instructed Greek participants to recall an event in which they experienced exclusion on the basis of their nationality versus a control event. We anticipated that participants would react to group‐based exclusion with increased nostalgia. Specifically, because low attachment‐related avoidance facilitates proximity‐seeking in response to distress, we hypothesized that group‐based exclusion would increase nostalgia (a form of proximity‐seeking) more strongly when avoidance is low. Results supported this moderation hypothesis. In turn, increased nostalgia in response to group‐based exclusion predicted stronger ingroup identification. For low‐avoidants, then, group‐based exclusion fortified ingroup identification via increased nostalgia (moderated mediation).     

At the Frontiers of Modeling Intensive Longitudinal Data: Dynamic Structural Equation Models for the Affective Measurements from the COGITO Study

With the growing popularity of intensive longitudinal research, the modeling techniques and software options for such data are also expanding rapidly. Here we use dynamic multilevel modeling, as it is incorporated in the new dynamic structural equation modeling (DSEM) toolbox in Mplus, to analyze the affective data from the COGITO study. These data consist of two samples of over 100 individuals each who were measured for about 100 days. We use composite scores of positive and negative affect and apply a multilevel vector autoregressive model to allow for individual differences in means, autoregressions, and cross-lagged effects. Then we extend the model to include random residual variances and covariance, and finally we investigate whether prior depression affects later depression scores through the random effects of the daily diary measures. We end with discussing several urgent—but mostly unresolved—issues in the area of dynamic multilevel modeling.     

Creative at Each Age: Age‐Related Differences in Drivers of Workplace Creativity from an Experience Sampling Study

Creativity and innovation are essential agents for change processes and accelerating technical development. Having to face challenges, such as demographic change, organizations require individuals who are creative and innovative at each age. Previous research identified affect as a crucial determinant of creativity, even though empirical findings showed inconsistencies. Drawing on literature on age‐related changes in affective experiences, we investigated the moderating effect of employees’ age on the association between daily positive and negative affect and creativity using a daily diary study. A total of 116 employees responded to daily questionnaires twice a day over five consecutive working days. As expected, hierarchical linear modeling analyses revealed differential effects regarding the affect‐creativity association, dependent on employees’ age. Although older employees were most creative on days when they experienced a high level of positive affect (compared to their mean level of positive affect), younger employees were particularly creative when experiencing negative affect (compared to their mean level of negative affect). We discuss practical implications on how organizations could provide creativity‐enhancing work environments for employees at each age.     

Hostility‐ and gender‐related differences in oscillatory responses to emotional facial expressions

Hostility is associated with biases in the perception of emotional facial expressions, such that ambiguous or neutral expressions tend to be perceived as threatening or angry. In this study, the effects of hostility and gender on the perception of angry, neutral, and happy faces and on the oscillatory dynamics of cortical responses elicited by these presentations were investigated using time–frequency decomposition by means of wavelet transforms. Feelings of hostility predisposed subjects to perceive happy and neutral faces as less friendly. This effect was more pronounced in women. In hostile subjects, presentation of emotional facial expressions also evoked stronger posterior synchronization in the theta and diminished desynchronization in the alpha band. This may signify a prevalence of emotional responding over cognitive processing. These effects were also more pronounced in females. Hostile females, but not hostile males, additionally showed a widespread synchronization in the alpha band. This synchronization is tentatively explained as a manifestation of inhibitory control which is present in aggressive females, but not in aggressive males. Aggr. Behav. 35:502–513, 2009. © 2009 Wiley‐Liss, Inc.     

Individual Differences in Habitual Social Goals and Daily Well‐Being: The Role of Age and Relationship Closeness

There is a robust evidence that social approach goals (i.e. approach of positive social outcomes) have positive consequences and social avoidance goals (i.e. avoidance of negative social outcomes) have negative consequences for subjective well‐being in young adulthood. Little is known about individual differences in social goals in later life. The current diary study with young (n = 212), middle‐aged (n = 232), and older adults (n = 229) tested––and supported––the hypotheses that age (i) differentially predicts the strength of habitual approach and avoidance goals in close and peripheral relationships and (ii) moderates the relation of approach and avoidance goals in peripheral (but not close) relationships and daily outcomes (subjective well‐being, subjective health, and satisfaction with social encounters). Older adults compared to younger adults reported higher levels of avoidance goals in peripheral (but not close) relationships. Younger adults who reported high levels of approach goals and older adults who reported high levels of avoidance goals in peripheral relationships experienced the most positive daily outcomes. In addition, social goals moderated some of the associations between (positive and negative) daily interactions and daily outcomes. Results underscore the importance of the closeness of social partners for individual differences in social goals across adulthood. © 2019 European Association of Personality Psychology     

Future Time Perspective and Gratitude in Daily Life: A Micro‐longitudinal Study

Preliminary cross‐sectional evidence suggests that future time perspective (FTP) is associated with dispositional gratitude, but research on daily perceptions of FTP and their relations to daily gratitude is lacking. In this study, we addressed this gap by examining how FTP and gratitude jointly unfold in daily life and how these relations vary within and across individuals. A micro‐longitudinal design (N = 331, adults aged 18–77) with daily assessments over two workweeks was employed to examine the relations between gratitude and two components of FTP (remaining opportunities and time). Three important results from random intercepts cross‐lagged panel models stand out. First, we found evidence for within‐person day‐to‐day carry‐over effects in FTP and gratitude. Second, FTP and gratitude were systematically related within and across individuals. Third, age and dispositional forms of FTP and gratitude predicted between‐person differences in FTP and gratitude in daily life. Finally, exploratory multilevel analyses have shown that the associations between daily FTP and gratitude vary across ages at the between‐person level but not at the within‐person level. Overall, these findings advance our understanding of perceptions of FTP in daily life and their associations with gratitude in adulthood. © 2019 European Association of Personality Psychology     

Ecological Effects in Cross‐Cultural Differences Between U.S. and Japanese Color Preferences

We investigated cultural differences between U.S. and Japanese color preferences and the ecological factors that might influence them. Japanese and U.S. color preferences have both similarities (e.g., peaks around blue, troughs around dark‐yellow, and preferences for saturated colors) and differences (Japanese participants like darker colors less than U.S. participants do). Complex gender differences were also evident that did not conform to previously reported effects. Palmer and Schloss's (2010) weighted affective valence estimate (WAVE) procedure was used to test the Ecological Valence Theory's (EVT's) prediction that within‐culture WAVE‐preference correlations should be higher than between‐culture WAVE‐preference correlations. The results supported several, but not all, predictions. In the second experiment, we tested color preferences of Japanese–U.S. multicultural participants who could read and speak both Japanese and English. Multicultural color preferences were intermediate between U.S. and Japanese preferences, consistent with the hypothesis that culturally specific personal experiences during one's lifetime influence color preferences.     

Unraveling the Aging Skein: Disentangling Sensory and Cognitive Predictors of Age‐related Differences in Decision Making

Age‐related differences in sensory functioning, processing speed, and working memory have been identified as three significant predictors of the age‐related performance decline observed in complex cognitive tasks. Yet, the assessment of their relative predictive capacity and interrelations is still an open issue in decision making and cognitive aging research. Indeed, no previous investigation has examined the relationships of all these three predictors with decision making. In an individual‐differences study, we therefore disentangled the relative contribution of sensory functioning, processing speed, and working memory to the prediction of the age‐related decline in cognitively demanding judgment and decision‐making tasks. Structural equation modeling showed that the age‐related decline in working memory plays an important predictive role, even when controlling for sensory functioning, processing speed, and education. Implications for research on decision making and cognitive aging are discussed. Copyright © 2015 John Wiley & Sons, Ltd.     

大五人格5个维度及10个面的发展水平——基于我国15～75岁横断样本调查

基于人格毕生发展理论及中国社会文化背景,调查了我国从青少年到老年3192名被试,探究了中国人大五人格5维度及10个面毕生发展水平。总体上,年龄与神经质、焦虑、抑郁、活跃、开放性、审美、创意显著负相关,与外倾性、宜人性、尽责性、自信、利他、顺从、条理和自律显著正相关。在60岁以下的人群中,年龄大的个体神经质更低,而在大于60岁的人群中,年龄大的个体神经质反而更高;在50岁以下的人群中,年龄大的个体外倾性水平相对较高,但50岁之后年龄大的个体外倾性相对较低;整体上,年龄大的个体开放性水平相对较低,而年龄大的个体宜人性水平反而更高;年龄大的个体尽责性水平也相对较高,但较之40到49岁群体而言,50岁以上群体的尽责性则相对较低。男性和女性不同年龄群体的大五人格具有一定差异性,特别是男性的尽责性高于女性,以及女性的神经质高于男性等性别差异。进一步分析了年龄与大五人格10个面的关系,描绘了不同年龄群体10个面的发展水平。     

家庭收入与生活满意感的动态关系检验:基于某省21县市2004～2010年的面板研究

本研究通过对2004年至2010年21县市的面板研究验证在县市水平上家庭收入与生活满意感的动态关系。多元多层增长模型的检验结果表明,在县市水平上平均家庭收入与平均生活满意感有显著正相关,初始家庭收入与生活满意感的增长速度呈现负相关,家庭收入增长速度与生活满意感增长速度呈现负相关。最后指出在中国经济持续高速发展的背景下,该研究对提升民众整体幸福感的启示意义。     

“To serve and protect” when expecting to be seen negatively: The relation between police officers' contact with citizens,meta‐stereotyping,and work‐related well‐being

We examined the relationship between contact of police officers with citizens, their (meta‐)stereotypes about citizens, and their work‐related well‐being. Ninety‐three police officers from 4 police stations in low‐ and high‐crime regions in France completed the questionnaire. As expected, negative well‐being of police officers is predicted by negative contact with citizens and their belief that police officers are stereotyped negatively by citizens. Moreover, the relationship between negative contact and negative well‐being was mediated by police officers' beliefs that police officers are perceived negatively by citizens, whereas their perceptions of citizens did not mediate this relationship. Interestingly, level of crime did not influence these relationships. Together, this research shows the important role of beliefs about how one's group is stereotyped when in contact with another group as it may have consequences for people's well‐being.     

Using Indirect Measurement Tasks to Assess the Self‐concept of Personality: A Systematic Review and Meta‐analyses

This systematic review presents the current state of research investigating the implicit self‐concept of personality. First, we present results on meta‐analyses estimating internal consistency, reliability coefficients, the implicit–explicit consistency and the single association predictive effect of implicit self‐concept of personality measures. To do this, studies were aggregated over personality domains. Second, for each of the Five Factor personality domains, different aspects of construct validity and predictive validity are reviewed in a narrative way. Results show that implicit self‐concept of personality measures are reliable, and there is evidence for the construct and predictive validity of these implicit measures, especially in the extraversion and agreeableness domains of personality. However, it must be kept in mind that clear evidence for publication bias was found for studies examining the single association predictive pattern. Finally, this systematic review identifies some achievable improvements that are needed in future research. Large cross‐lab efforts are important in this respect. Moreover, the implicit self‐concept of personality field must move from an ‘ad hoc’ to a ‘validation’ approach in developing new indirect measurement tasks. By adopting these research objectives, the information processing account of personality will increase its potential to become integrated into mainstream personality theory and research. Copyright © 2017 European Association of Personality Psychology     

Explaining Differences in Subjective Well‐Being Across 33 Nations Using Multilevel Models: Universal Personality,Cultural Relativity,and National Income

This multinational study simultaneously tested three prominent hypotheses—universal disposition, cultural relativity, and livability—that explained differences in subjective well‐being across nations. We performed multilevel structural equation modeling to examine the hypothesized relationships at both individual and cultural levels in 33 nations. Participants were 6,753 university students (2,215 men; 4,403 women; 135 did not specify), and the average age of the entire sample was 20.97 years (SD = 2.39). Both individual‐ and cultural‐level analyses supported the universal disposition and cultural relativity hypotheses by revealing significant associations of subjective well‐being with Extraversion, Neuroticism, and independent self‐construal. In addition, interdependent self‐construal was positively related to life satisfaction at the individual level only, whereas aggregated negative affect was positively linked with aggregate levels of Extraversion and interdependent self‐construal at the cultural level only. Consistent with the livability hypothesis, gross national income (GNI) was related to aggregate levels of negative affect and life satisfaction. There was also a quadratic relationship between GNI and aggregated positive affect. Our findings reveal that universal disposition, cultural self‐construal, and national income can elucidate differences in subjective well‐being, but the multilevel analyses advance the literature by yielding new findings that cannot be identified in studies using individual‐level analyses alone.     

Age‐related differences in everyday prospective memory tasks: The role of planning and personal importance

The aim of the present studies was to investigate whether age‐related improvement found in naturalistic but experimenter‐given prospective memory (PM) tasks can be generalized to real‐life intentions. In Study 1, younger, middle‐aged, and older adults generated a list of intended activities for the following week; one week later they marked the tasks that they had performed. The participants were also asked to rate the importance of each listed intention and to describe the circumstances of completion that were already known to them. We found that, compared with younger adults, older adults attributed a higher degree of importance to their intentions and had the circumstances of their completion better planned. However, the age‐related benefit in the PM performance for all listed intentions was not present for the very important and well‐planned tasks. In Study 2 we manipulated whether younger adults engaged or not in the detailed planning of when their intentions could be completed. It was demonstrated that younger adults who had to perform detailed planning completed their intended activities more often than those who did not plan for their intentions. The results support explanations of the age‐related benefit in everyday PM that highlight the role of importance and planning.     

Let There Be Variance: Individual Differences in Consecutive Self‐control in a Laboratory Setting and Daily Life

The large body of research used to support ego‐depletion effects is currently faced with conceptual and replication issues, leading to doubt over the extent or even existence of the ego‐depletion effect. By using within‐person designs in a laboratory (Study 1; 187 participants) and an ambulatory assessment study (Study 2; 125 participants), we sought to clarify this ambiguity by investigating whether prominent situational variables (such as motivation and affect) or personality traits can help elucidate when ego depletion can be observed and when not. Although only marginal ego‐depletion effects were found in both studies, these effects varied considerably between individuals, indicating that some individuals experience self‐control decrements after initial self‐control exertion and others not. However, neither motivation nor affect nor personality traits such as trait self‐control could consistently explain this variability when models were applied that controlled for variance due to targets and the depletion manipulation (Study 1) or days (Study 2) as well as for multiple testing. We discuss how the operationalization and reliability of our key measures may explain these null effects and demonstrate that alternative metrics may be required to study the consequences of the consecutive exertion of self‐control. © 2019 European Association of Personality Psychology     

Age‐related differences in delay discounting: Immediate reward,reward magnitude,and social influence

Delay discounting refers to the tendency of individuals to subjectively devalue rewards that are to be received in the future, with high rates of delay discounting being associated with a variety of maladaptive life outcomes (e.g., unhealthy dietary and exercise behaviors). The current study explored the psychological and social processes involved in adult age‐related differences in delay discounting of monetary rewards. Younger adults exhibited higher levels of delay discounting than older adults. This increased level of patience in older adults was found whether smaller‐sooner rewards were to be received immediately or in the future. However, there was an interaction with reward magnitude, whereby younger adults exhibited higher levels of delay discounting for smaller reward magnitudes but not larger reward magnitudes. Social influence on delay discounting was investigated by having participants complete three phases of the delay‐discounting task: an individual precollaboration phase, a collaboration phase in age‐group‐matched dyads, and an individual postcollaboration phase. A convergence effect was observed in that dyad members' postcollaboration choices were significantly more similar compared to their baseline choices during the precollaboration phase. Moreover, levels of convergence were comparable between younger and older adults, suggesting age invariance in social influence on delay discounting. The current results demonstrate a degree of malleability in delay discounting that extends into older adulthood, making interventions targeting the construct a promising avenue for future research.     

Emotional intelligence and health‐related quality of life in institutionalised Spanish older adults

This study explores the relationship between emotional intelligence (EI) and health‐related quality of life (HRQoL) in a sample of Spanish older adults who are institutionalised in long‐term care (LTC) facilities. One hundred fifteen institutionalised individuals (47.82% women; 88.3 ± 7.9 years) from southern Spain completed a set of questionnaires that included measures of EI, health and personality. Data were analysed via hierarchical regression. After controlling for personality and sociodemographic variables, the EI dimensions, emotional comprehension and emotional facilitation, accounted for part of the variance in several HRQoL facets. These dimensions could have an important role in the HRQoL of residents in LTC. Moreover, the use of a performance measure addresses the limitations of previous studies that have relied on self‐report measures. These aspects underscore the importance of the results of this study.