Personality and Individual Differences, Apr 1, 2014
Research connecting sociopolitical attitudes to personality typically relies exclusively on self-... more Research connecting sociopolitical attitudes to personality typically relies exclusively on self-report measures of personality. A recently discovered mechanism of bias in self-reports highlights a particular challenge for this approach. Specifically, individuals tend to report exaggerated levels of a trait to the extent that they view that trait as desirable. In a community sample of 443 participants, differences in sociopolitical attitudes were associated with differences in the extent to which individuals provided biased self-reports for a given trait (relative to trait levels indicated by peer-report or an objective measure) as well as differences in views of the desirability that trait. Further, the tendency to misrepresent traits in a manner consistent with one's sociopolitical attitudes was mediated by differences in views of trait desirability. Thus, although meaningful personality differences exist among those with differing sociopolitical attitudes, those differences may not be as large as people with opposing sociopolitical attitudes might like them to be.
Positive symptoms of schizophrenia and its extended phenotype-often termed psychoticism or positi... more Positive symptoms of schizophrenia and its extended phenotype-often termed psychoticism or positive schizotypy-are characterized by the inclusion of novel, erroneous mental contents. One promising framework for explaining positive symptoms involves apophenia, conceptualized here as a disposition toward false-positive errors. Apophenia and positive symptoms have shown relations to openness to experience (more specifically, to the openness aspect of the broader openness/intellect domain), and all of these constructs involve tendencies toward pattern seeking. Nonetheless, few studies have investigated the relations between psychoticism and non-self-report indicators of apophenia, let alone the role of normal personality variation. The current research used structural equation models to test associations between psychoticism, openness, intelligence, and non-self-report indicators of apophenia comprising false-positive error rates on a variety of computerized tasks. In Sample 1, 1,193 participants completed digit identification, theory of mind, and emotion recognition tasks. In Sample 2, 195 participants completed auditory signal detection and semantic word association tasks. Psychoticism and the openness aspect were positively correlated. Self-reported psychoticism, openness, and their shared variance were positively associated with apophenia, as indexed by false-positive error rates, whether or not intelligence was controlled for. Apophenia was not associated with other personality traits, and openness and psychoticism were not associated with false-negative errors. Findings provide insights into the measurement of apophenia and its relation to personality and psychopathology. Apophenia and pattern seeking may be promising constructs for unifying the openness aspect of personality with the psychosis spectrum and for providing an explanation of positive symptoms. Results are discussed in the context of possible adaptive characteristics of apophenia as well as potential risk factors for the development of psychotic disorders. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
The opportunity to learn new knowledge is ever present. How do people decide if information has s... more The opportunity to learn new knowledge is ever present. How do people decide if information has sufficient value to counteract the cost of obtaining it? We proposed a conceptual model of information seeking that emphasizes how personality traits and perceptions of situations may influence motivations to seek information to explore (related to trait curiosity and openness/intellect, and situations evoking more positive emotions and opportunities for intellectual engagement) or feel safe (related to trait uncertainty intolerance and neuroticism, and situations that evoke more negative emotions). Across two studies (N = 436; N = 316), information seeking was assessed with two widely-used paradigms (advance knowledge of a reward outcome and answers to trivia questions), as well as two variations of the trivia paradigm in Study 1. In all contexts, the available information was non-instrumental, having no practical utility within the context of the task. Consistent with our proposed exploration pathway, curiosity and openness/intellect predicted the choice to seek information for trivia and related stimuli, but not reward-outcome stimuli, and trivia stimuli were generally rated as more intellectually engaging, more positive, and less negative than reward-outcome stimuli. However, evidence for the safety pathway was only partially in line with predictions, with uncertainty intolerance predicting reward-outcome information seeking in Study 2 only. We consider possible modifications to our initial model and implications for information-seeking research. These studies provide a proof of concept that people display both trait-and context-dependent preferences for non-instrumental information, both of which are commonly overlooked in studies of information seeking.
Personality neuroscience is the study of persistent psychological individual differences, typical... more Personality neuroscience is the study of persistent psychological individual differences, typically in the general population, using neuroscientific methods. It has the potential to shed light on the neurobiological mechanisms underlying individual differences and their manifestation in ongoing behavior and experience. The field was inaugurated many decades ago, yet has only really gained momentum in the last two, as suitable technologies have become widely available. Personality neuroscience employs a broad range of methods, including molecular genetics, pharmacological assays or manipulations, electroencephalography, and various neuroimaging modalities, such as magnetic resonance imaging and positron emission tomography. Although exciting progress is being made in this young field, much remains unknown. In this brief review, we discuss discoveries that have been made, methodological challenges and advances, and important questions that This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License, CC BY 4.0, which permits unrestricted use, distribution, and reproduction, provided the original work is properly cited. remain to be answered. We also discuss best practices for personality neuroscience research and promising future directions for the field.
Individuals high in the personality trait Openness to Experience appear to engage spontaneously (... more Individuals high in the personality trait Openness to Experience appear to engage spontaneously (during wake) in processes of elaborative encoding similar to those Llewellyn identifies in both dreaming and the ancient art of memory (AAOM). Links between Openness and dreaming support the hypothesis that dreaming is part of a larger process of cognitive exploration that facilitates adaptation to new experiences.
Objective: Conventional measures of self-report bias implicitly assume consistent patterns of ove... more Objective: Conventional measures of self-report bias implicitly assume consistent patterns of overclaiming across individuals. We contrast this with the effects of individual differences in views of trait desirability on overclaiming, which we label idiographically desirable responding (IDR). Method: We obtained self-reports and peer reports of trait levels on mixed-sex samples of undergraduates (N = 352) and middle-aged community members (N = 541), with an additional performance-based assessment in the latter sample. Results: Compared to conventional measures of bias, individual differences in trait desirability ratings identified an independent and comparatively large amount of the variance in overclaiming for personality and physical attractiveness. The importance of IDR was confirmed by the replication of these results for intelligence, for which both peer-ratings and performance data were available. Individuals differed in the extent to which they rely on IDR, with these differences indexed by the correlation between views of the desirability of a given trait and the extent to which one overclaimed that trait. Individuals who were more prone to overclaim in this fashion exhibited higher self-esteem as well as higher scores on questionnaire measures of socially desirable responding. Conclusion: Overclaiming of traits resulted both from the patterns of biases identified by conventional overclaiming measures and from individual differences in perceptions of what traits are most desirable.
Few tract-based spatial statistics (TBSS) studies have investigated the relations between intelli... more Few tract-based spatial statistics (TBSS) studies have investigated the relations between intelligence and white matter microstructure in healthy (young) adults, and those have yielded mixed observations, yet white matter is fundamental for efficient and accurate information transfer throughout the human brain. We used a multi-center approach to identify white matter regions that show replicable structure-function associations, employing data from four independent samples comprising over 2000 healthy participants. TBSS indicated 188 voxels exhibited significant positive associations between g factor scores and fractional anisotropy in all four data sets. Replicable voxels formed three clusters, located around the left-hemispheric forceps minor, superior longitudinal fasciculus, and cingulum-cingulate gyrus with extensions into their surrounding areas (anterior thalamic radiation, inferior fronto-occipital fasciculus). Our results suggested that individual differences in general intelligence are robustly associated with white matter fractional anisotropy in specific fiber bundles distributed across the brain, consistent with the Parieto-Frontal Integration Theory of intelligence. Three possible reasons higher FA values might create links with higher g are faster information processing due to greater myelination, more direct information processing due to parallel, homogenous fiber orientation distributions, or more parallel information processing due to greater axon density.
Marek et al. analyzed three very large magnetic resonance imaging (MRI) datasets and concluded th... more Marek et al. analyzed three very large magnetic resonance imaging (MRI) datasets and concluded that thousands of participants are necessary to ensure replicable results in “brain-wide associations studies,” which they defined as “studies of the associations between common inter-individual variability in human brain structure/function and cognition or psychiatric symptomatology.” This conclusion overgeneralizes the implications of their findings and is likely to have an unwarranted chilling effect on neuroimaging research focused on individual differences, preventing good research with samples in the hundreds from being funded and conducted. To fend off these negative consequences, we explain why their conclusion is not fully justified, discuss methods that can yield larger effects, and suggest practical guidelines for sample size, recognizing the potential utility of samples in the hundreds.
Average r =-0.08 b [5]; N = 4852 (meta-analysis) c Creative versus noncreative scientists: detail... more Average r =-0.08 b [5]; N = 4852 (meta-analysis) c Creative versus noncreative scientists: details not given in [5] for how the meta-analysis selected these studies Average r =-0.02 b [5]; N = 3918 (meta-analysis) Creative achievement (sciences): quantity of creative achievements (e.g., publications) in scientific endeavors (e.g., research) Average r =-0.10 [4]; N = 1035, across four studies d Everyday creative behavior: frequency of everyday creativity activities (e.g., 'Entered a project into a science contest') r = +0.11 [6]; N = 189 Self-assessed creativity: self-assessed creativity across numerous realworld domains (e.g., 'How creative are you in the area of crafts?') rs =-0.29 to-0.01 [6]; N = 189 a These nonsignificant relations were replicated by [3], [4], and [6]. b Weighted average Cohen's d, calculated and converted to r by the present authors. c This author found modest relations between a variety of scales correlated with neuroticism and having an occupation in the arts. d These authors additionally found no significant relation between neuroticism and creative achievement in the arts.
The externalizing spectrum encompasses a range of maladaptive behaviors, including substance-use ... more The externalizing spectrum encompasses a range of maladaptive behaviors, including substance-use problems, impulsivity, and aggression. Although previous literature has linked externalizing behaviors with prefrontal and amygdala abnormalities, recent studies suggest insula functionality is implicated. This study investigated the relation between insula functional coherence and externalizing in a large community sample (N = 244). Participants underwent a resting functional MRI scan. Three nonartifactual intrinsic connectivity networks (ICNs) substantially involving the insula were identified after completing independent components analysis. Three externalizing domains-general disinhibition, substance abuse, and callous aggression-were measured with the Externalizing Spectrum Inventory. Regression models tested whether within-network coherence for the 3 insula ICNs was related to each externalizing domain. Posterior insula coherence was positively associated with general disinhibition...
The Big Five personality dimension Openness/Intellect is the trait most closely associated with c... more The Big Five personality dimension Openness/Intellect is the trait most closely associated with creativity and creative achievement. Little is known, however, regarding the discriminant validity of its two aspects—Openness to Experience (reflecting cognitive engagement with perception, fantasy, aesthetics, and emotions) and Intellect (reflecting cognitive engagement with abstract and semantic information, primarily through reasoning)—in relation to creativity. In four demographically diverse samples totaling 1,035 participants, we investigated the independent predictive validity of Openness and Intellect by assessing the relations among cognitive ability, divergent thinking, personality, and creative achievement across the arts and sciences. We confirmed the hypothesis that whereas Openness predicts creative achievement in the arts, Intellect predicts creative achievement in the sciences. Inclusion of performance measures of general cognitive ability and divergent thinking indicated...
This article clarifies two sources of ambiguity surrounding the relation between extraversion and... more This article clarifies two sources of ambiguity surrounding the relation between extraversion and positive affect. First, positive affect is defined differently across major models of the structure of affect. Second, no previous research has examined potentially diverging associations of lower-order aspects of extraversion (i.e., assertiveness and enthusiasm) with positive affect. Australian (Study 1: N = 437, 78% female, Mage = 20.41) and American (Study 2: N = 262, 39% female, Mage = 33.86) participants completed multiple measures of extraversion and positive affect. Correlations were employed to examine relations among these measures. In both studies, extraversion was most clearly associated with positive affect as conceptualized within a major factor model of affect-specifically, as positive activation (Watson & Tellegen, 1985)-rather than the valence-based conceptualization of positive affect provided by a circumplex model of affect (Russell, 1980). This was also the case for...
Disputes between those holding differing political views are ubiquitous and deep-seated, and they... more Disputes between those holding differing political views are ubiquitous and deep-seated, and they often follow common, recognizable lines. The supporters of tradition and stability, sometimes referred to as conservatives, do battle with the supporters of innovation and reform, sometimes referred to as liberals. Understanding the correlates of those distinct political orientations is probably a prerequisite for managing political disputes, which are a source of social conflict that can lead to frustration and even bloodshed. A rapidly growing body of empirical evidence documents a multitude of ways in which liberals and conservatives differ from each other in purviews of life with little direct connection to politics, from tastes in art to desire for closure and from disgust sensitivity to the tendency to pursue new information, but the central theme of the differences is a matter of debate. In this article, we argue that one organizing element of the many differences between liberals and conservatives is the nature of their physiological and psychological responses to features of the environment that are negative. Compared with liberals, conservatives tend to register greater physiological responses to such stimuli and also to devote more psychological resources to them. Operating from this point of departure, we suggest approaches for refining understanding of the broad relationship between political views and response to the negative. We conclude with a discussion of normative implications, stressing that identifying differences across ideological groups is not tantamount to declaring one ideology superior to another.
Research connecting sociopolitical attitudes to personality typically relies exclusively on self-... more Research connecting sociopolitical attitudes to personality typically relies exclusively on self-report measures of personality. A recently discovered mechanism of bias in self-reports highlights a particular challenge for this approach. Specifically, individuals tend to report exaggerated levels of a trait to the extent that they view that trait as desirable. In a community sample of 443 participants, differences in sociopolitical attitudes were associated with differences in the extent to which individuals provided biased self-reports for a given trait (relative to trait levels indicated by peer-report or an objective measure) as well as differences in views of the desirability that trait. Further, the tendency to misrepresent traits in a manner consistent with one's sociopolitical attitudes was mediated by differences in views of trait desirability. Thus, although meaningful personality differences exist among those with differing sociopolitical attitudes, those differences may not be as large as people with opposing sociopolitical attitudes might like them to be.
A novel theory of Openness/Intellect is proposed, which integrates intelligence and positive schi... more A novel theory of Openness/Intellect is proposed, which integrates intelligence and positive schizotypy (or apophenia, false detection of patterns or causal connections) within the Big Five. Openness/Intellect comprises a simplex of subtraits arrayed along a single scaling dimension. Openness traits fall in one half of the simplex, bounded by apophenia; Intellect traits fall in the other half, bounded by intelligence. The simplex is paradoxical because intelligence and apophenia are negatively correlated despite both loading positively on the general Openness/Intellect factor. The model was supported in two samples and organizes theories of (1) the relation of intelligence and schizotypy to personality, (2) the psychological and biological mechanisms involved in Openness/Intellect, and (3) the costs and benefits of Openness, proximally and evolutionarily.
This article may be used for research, teaching, and private study purposes. Any substantial or s... more This article may be used for research, teaching, and private study purposes. Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae, and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand, or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material.
Personality and Individual Differences, Apr 1, 2014
Research connecting sociopolitical attitudes to personality typically relies exclusively on self-... more Research connecting sociopolitical attitudes to personality typically relies exclusively on self-report measures of personality. A recently discovered mechanism of bias in self-reports highlights a particular challenge for this approach. Specifically, individuals tend to report exaggerated levels of a trait to the extent that they view that trait as desirable. In a community sample of 443 participants, differences in sociopolitical attitudes were associated with differences in the extent to which individuals provided biased self-reports for a given trait (relative to trait levels indicated by peer-report or an objective measure) as well as differences in views of the desirability that trait. Further, the tendency to misrepresent traits in a manner consistent with one's sociopolitical attitudes was mediated by differences in views of trait desirability. Thus, although meaningful personality differences exist among those with differing sociopolitical attitudes, those differences may not be as large as people with opposing sociopolitical attitudes might like them to be.
Positive symptoms of schizophrenia and its extended phenotype-often termed psychoticism or positi... more Positive symptoms of schizophrenia and its extended phenotype-often termed psychoticism or positive schizotypy-are characterized by the inclusion of novel, erroneous mental contents. One promising framework for explaining positive symptoms involves apophenia, conceptualized here as a disposition toward false-positive errors. Apophenia and positive symptoms have shown relations to openness to experience (more specifically, to the openness aspect of the broader openness/intellect domain), and all of these constructs involve tendencies toward pattern seeking. Nonetheless, few studies have investigated the relations between psychoticism and non-self-report indicators of apophenia, let alone the role of normal personality variation. The current research used structural equation models to test associations between psychoticism, openness, intelligence, and non-self-report indicators of apophenia comprising false-positive error rates on a variety of computerized tasks. In Sample 1, 1,193 participants completed digit identification, theory of mind, and emotion recognition tasks. In Sample 2, 195 participants completed auditory signal detection and semantic word association tasks. Psychoticism and the openness aspect were positively correlated. Self-reported psychoticism, openness, and their shared variance were positively associated with apophenia, as indexed by false-positive error rates, whether or not intelligence was controlled for. Apophenia was not associated with other personality traits, and openness and psychoticism were not associated with false-negative errors. Findings provide insights into the measurement of apophenia and its relation to personality and psychopathology. Apophenia and pattern seeking may be promising constructs for unifying the openness aspect of personality with the psychosis spectrum and for providing an explanation of positive symptoms. Results are discussed in the context of possible adaptive characteristics of apophenia as well as potential risk factors for the development of psychotic disorders. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
The opportunity to learn new knowledge is ever present. How do people decide if information has s... more The opportunity to learn new knowledge is ever present. How do people decide if information has sufficient value to counteract the cost of obtaining it? We proposed a conceptual model of information seeking that emphasizes how personality traits and perceptions of situations may influence motivations to seek information to explore (related to trait curiosity and openness/intellect, and situations evoking more positive emotions and opportunities for intellectual engagement) or feel safe (related to trait uncertainty intolerance and neuroticism, and situations that evoke more negative emotions). Across two studies (N = 436; N = 316), information seeking was assessed with two widely-used paradigms (advance knowledge of a reward outcome and answers to trivia questions), as well as two variations of the trivia paradigm in Study 1. In all contexts, the available information was non-instrumental, having no practical utility within the context of the task. Consistent with our proposed exploration pathway, curiosity and openness/intellect predicted the choice to seek information for trivia and related stimuli, but not reward-outcome stimuli, and trivia stimuli were generally rated as more intellectually engaging, more positive, and less negative than reward-outcome stimuli. However, evidence for the safety pathway was only partially in line with predictions, with uncertainty intolerance predicting reward-outcome information seeking in Study 2 only. We consider possible modifications to our initial model and implications for information-seeking research. These studies provide a proof of concept that people display both trait-and context-dependent preferences for non-instrumental information, both of which are commonly overlooked in studies of information seeking.
Personality neuroscience is the study of persistent psychological individual differences, typical... more Personality neuroscience is the study of persistent psychological individual differences, typically in the general population, using neuroscientific methods. It has the potential to shed light on the neurobiological mechanisms underlying individual differences and their manifestation in ongoing behavior and experience. The field was inaugurated many decades ago, yet has only really gained momentum in the last two, as suitable technologies have become widely available. Personality neuroscience employs a broad range of methods, including molecular genetics, pharmacological assays or manipulations, electroencephalography, and various neuroimaging modalities, such as magnetic resonance imaging and positron emission tomography. Although exciting progress is being made in this young field, much remains unknown. In this brief review, we discuss discoveries that have been made, methodological challenges and advances, and important questions that This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License, CC BY 4.0, which permits unrestricted use, distribution, and reproduction, provided the original work is properly cited. remain to be answered. We also discuss best practices for personality neuroscience research and promising future directions for the field.
Individuals high in the personality trait Openness to Experience appear to engage spontaneously (... more Individuals high in the personality trait Openness to Experience appear to engage spontaneously (during wake) in processes of elaborative encoding similar to those Llewellyn identifies in both dreaming and the ancient art of memory (AAOM). Links between Openness and dreaming support the hypothesis that dreaming is part of a larger process of cognitive exploration that facilitates adaptation to new experiences.
Objective: Conventional measures of self-report bias implicitly assume consistent patterns of ove... more Objective: Conventional measures of self-report bias implicitly assume consistent patterns of overclaiming across individuals. We contrast this with the effects of individual differences in views of trait desirability on overclaiming, which we label idiographically desirable responding (IDR). Method: We obtained self-reports and peer reports of trait levels on mixed-sex samples of undergraduates (N = 352) and middle-aged community members (N = 541), with an additional performance-based assessment in the latter sample. Results: Compared to conventional measures of bias, individual differences in trait desirability ratings identified an independent and comparatively large amount of the variance in overclaiming for personality and physical attractiveness. The importance of IDR was confirmed by the replication of these results for intelligence, for which both peer-ratings and performance data were available. Individuals differed in the extent to which they rely on IDR, with these differences indexed by the correlation between views of the desirability of a given trait and the extent to which one overclaimed that trait. Individuals who were more prone to overclaim in this fashion exhibited higher self-esteem as well as higher scores on questionnaire measures of socially desirable responding. Conclusion: Overclaiming of traits resulted both from the patterns of biases identified by conventional overclaiming measures and from individual differences in perceptions of what traits are most desirable.
Few tract-based spatial statistics (TBSS) studies have investigated the relations between intelli... more Few tract-based spatial statistics (TBSS) studies have investigated the relations between intelligence and white matter microstructure in healthy (young) adults, and those have yielded mixed observations, yet white matter is fundamental for efficient and accurate information transfer throughout the human brain. We used a multi-center approach to identify white matter regions that show replicable structure-function associations, employing data from four independent samples comprising over 2000 healthy participants. TBSS indicated 188 voxels exhibited significant positive associations between g factor scores and fractional anisotropy in all four data sets. Replicable voxels formed three clusters, located around the left-hemispheric forceps minor, superior longitudinal fasciculus, and cingulum-cingulate gyrus with extensions into their surrounding areas (anterior thalamic radiation, inferior fronto-occipital fasciculus). Our results suggested that individual differences in general intelligence are robustly associated with white matter fractional anisotropy in specific fiber bundles distributed across the brain, consistent with the Parieto-Frontal Integration Theory of intelligence. Three possible reasons higher FA values might create links with higher g are faster information processing due to greater myelination, more direct information processing due to parallel, homogenous fiber orientation distributions, or more parallel information processing due to greater axon density.
Marek et al. analyzed three very large magnetic resonance imaging (MRI) datasets and concluded th... more Marek et al. analyzed three very large magnetic resonance imaging (MRI) datasets and concluded that thousands of participants are necessary to ensure replicable results in “brain-wide associations studies,” which they defined as “studies of the associations between common inter-individual variability in human brain structure/function and cognition or psychiatric symptomatology.” This conclusion overgeneralizes the implications of their findings and is likely to have an unwarranted chilling effect on neuroimaging research focused on individual differences, preventing good research with samples in the hundreds from being funded and conducted. To fend off these negative consequences, we explain why their conclusion is not fully justified, discuss methods that can yield larger effects, and suggest practical guidelines for sample size, recognizing the potential utility of samples in the hundreds.
Average r =-0.08 b [5]; N = 4852 (meta-analysis) c Creative versus noncreative scientists: detail... more Average r =-0.08 b [5]; N = 4852 (meta-analysis) c Creative versus noncreative scientists: details not given in [5] for how the meta-analysis selected these studies Average r =-0.02 b [5]; N = 3918 (meta-analysis) Creative achievement (sciences): quantity of creative achievements (e.g., publications) in scientific endeavors (e.g., research) Average r =-0.10 [4]; N = 1035, across four studies d Everyday creative behavior: frequency of everyday creativity activities (e.g., 'Entered a project into a science contest') r = +0.11 [6]; N = 189 Self-assessed creativity: self-assessed creativity across numerous realworld domains (e.g., 'How creative are you in the area of crafts?') rs =-0.29 to-0.01 [6]; N = 189 a These nonsignificant relations were replicated by [3], [4], and [6]. b Weighted average Cohen's d, calculated and converted to r by the present authors. c This author found modest relations between a variety of scales correlated with neuroticism and having an occupation in the arts. d These authors additionally found no significant relation between neuroticism and creative achievement in the arts.
The externalizing spectrum encompasses a range of maladaptive behaviors, including substance-use ... more The externalizing spectrum encompasses a range of maladaptive behaviors, including substance-use problems, impulsivity, and aggression. Although previous literature has linked externalizing behaviors with prefrontal and amygdala abnormalities, recent studies suggest insula functionality is implicated. This study investigated the relation between insula functional coherence and externalizing in a large community sample (N = 244). Participants underwent a resting functional MRI scan. Three nonartifactual intrinsic connectivity networks (ICNs) substantially involving the insula were identified after completing independent components analysis. Three externalizing domains-general disinhibition, substance abuse, and callous aggression-were measured with the Externalizing Spectrum Inventory. Regression models tested whether within-network coherence for the 3 insula ICNs was related to each externalizing domain. Posterior insula coherence was positively associated with general disinhibition...
The Big Five personality dimension Openness/Intellect is the trait most closely associated with c... more The Big Five personality dimension Openness/Intellect is the trait most closely associated with creativity and creative achievement. Little is known, however, regarding the discriminant validity of its two aspects—Openness to Experience (reflecting cognitive engagement with perception, fantasy, aesthetics, and emotions) and Intellect (reflecting cognitive engagement with abstract and semantic information, primarily through reasoning)—in relation to creativity. In four demographically diverse samples totaling 1,035 participants, we investigated the independent predictive validity of Openness and Intellect by assessing the relations among cognitive ability, divergent thinking, personality, and creative achievement across the arts and sciences. We confirmed the hypothesis that whereas Openness predicts creative achievement in the arts, Intellect predicts creative achievement in the sciences. Inclusion of performance measures of general cognitive ability and divergent thinking indicated...
This article clarifies two sources of ambiguity surrounding the relation between extraversion and... more This article clarifies two sources of ambiguity surrounding the relation between extraversion and positive affect. First, positive affect is defined differently across major models of the structure of affect. Second, no previous research has examined potentially diverging associations of lower-order aspects of extraversion (i.e., assertiveness and enthusiasm) with positive affect. Australian (Study 1: N = 437, 78% female, Mage = 20.41) and American (Study 2: N = 262, 39% female, Mage = 33.86) participants completed multiple measures of extraversion and positive affect. Correlations were employed to examine relations among these measures. In both studies, extraversion was most clearly associated with positive affect as conceptualized within a major factor model of affect-specifically, as positive activation (Watson & Tellegen, 1985)-rather than the valence-based conceptualization of positive affect provided by a circumplex model of affect (Russell, 1980). This was also the case for...
Disputes between those holding differing political views are ubiquitous and deep-seated, and they... more Disputes between those holding differing political views are ubiquitous and deep-seated, and they often follow common, recognizable lines. The supporters of tradition and stability, sometimes referred to as conservatives, do battle with the supporters of innovation and reform, sometimes referred to as liberals. Understanding the correlates of those distinct political orientations is probably a prerequisite for managing political disputes, which are a source of social conflict that can lead to frustration and even bloodshed. A rapidly growing body of empirical evidence documents a multitude of ways in which liberals and conservatives differ from each other in purviews of life with little direct connection to politics, from tastes in art to desire for closure and from disgust sensitivity to the tendency to pursue new information, but the central theme of the differences is a matter of debate. In this article, we argue that one organizing element of the many differences between liberals and conservatives is the nature of their physiological and psychological responses to features of the environment that are negative. Compared with liberals, conservatives tend to register greater physiological responses to such stimuli and also to devote more psychological resources to them. Operating from this point of departure, we suggest approaches for refining understanding of the broad relationship between political views and response to the negative. We conclude with a discussion of normative implications, stressing that identifying differences across ideological groups is not tantamount to declaring one ideology superior to another.
Research connecting sociopolitical attitudes to personality typically relies exclusively on self-... more Research connecting sociopolitical attitudes to personality typically relies exclusively on self-report measures of personality. A recently discovered mechanism of bias in self-reports highlights a particular challenge for this approach. Specifically, individuals tend to report exaggerated levels of a trait to the extent that they view that trait as desirable. In a community sample of 443 participants, differences in sociopolitical attitudes were associated with differences in the extent to which individuals provided biased self-reports for a given trait (relative to trait levels indicated by peer-report or an objective measure) as well as differences in views of the desirability that trait. Further, the tendency to misrepresent traits in a manner consistent with one's sociopolitical attitudes was mediated by differences in views of trait desirability. Thus, although meaningful personality differences exist among those with differing sociopolitical attitudes, those differences may not be as large as people with opposing sociopolitical attitudes might like them to be.
A novel theory of Openness/Intellect is proposed, which integrates intelligence and positive schi... more A novel theory of Openness/Intellect is proposed, which integrates intelligence and positive schizotypy (or apophenia, false detection of patterns or causal connections) within the Big Five. Openness/Intellect comprises a simplex of subtraits arrayed along a single scaling dimension. Openness traits fall in one half of the simplex, bounded by apophenia; Intellect traits fall in the other half, bounded by intelligence. The simplex is paradoxical because intelligence and apophenia are negatively correlated despite both loading positively on the general Openness/Intellect factor. The model was supported in two samples and organizes theories of (1) the relation of intelligence and schizotypy to personality, (2) the psychological and biological mechanisms involved in Openness/Intellect, and (3) the costs and benefits of Openness, proximally and evolutionarily.
This article may be used for research, teaching, and private study purposes. Any substantial or s... more This article may be used for research, teaching, and private study purposes. Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae, and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand, or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material.
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