Christian Kandler
Datos Biográficos
| ID | 265135 |
|---|---|
| NOMBRE | Christian Kandler |
| NOMBRES | Christian |
| APELLIDO | Kandler |
| FIRMA | KANDLER C |
| AFILIACIONES | Bielefeld University |
| ORCID | 0000-0002-9175-235X |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 36 |
| TOTAL DE CITAS | 148 |
| TOTAL COMO AUTOR | 36 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2009 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2026 |
| ÍNDICE H | 8 |
Anthropometric differences between twins at birth and their association with later cognitive performance
BACKGROUND: Past studies indicate significant associations between birth anthropometrics, such as relative birthweight or head circumference, and later cognitive performance. Using twin data, we investigated whether these associations are confounded by genetic and environmental factors. Additionally, we determined whether the association of within twin differences in birth anthropometrics and cognitive performance is nonlinear or moderated by fac…
Narcissism Runs in Families Due to Genetics
Narcissism is a personality trait with far-reaching individual, social, and societal consequences. Thus, it is important to understand the sources of individual differences in this trait. Existing hypotheses on the development of narcissism have focused on familial and parental environments that act to make siblings in a family more alike. However, the relative importance of shared environments as opposed to other environmental and genetic source…
Individual Differences in the Effects of Life Events on Personality Trait Change
OBJECTIVE: To date, effects of life events on personality trait change have been unsystematic, tenuous, and difficult to replicate. We focus on individual differences in change processes following life events, which have been neglected in previous studies. METHOD: Based on a novel Moderated Nonlinear Latent-State-Trait modeling approach we investigate the impact of the occurrence and individual perception of life events on different types of self…
Patterns and sources of life satisfaction stability and change at different developmental stages
2 = .012). (PsycInfo Database Record (c) 2026 APA, all rights reserved)
Nuanced Hexaco
Most Five-Factor Model (FFM) questionnaire items contain unique variance that is partly heritable, stable, and consensually observable, demonstrates consistent associations with age and sex, and predicts life outcomes beyond higher order factors. Extending these findings to the HEXACO model, we meta-analyzed single-item cross-rater agreement, heritability, and 2-year stability using samples from six countries. We analyzed raw item scores and thei…
Familial similarity and heritability of personality traits and life satisfaction are higher than shown in typical single-method studies
Personality trait similarity among ordinary relatives is surprisingly low, with parent-offspring and sibling-sibling correlations usually r ≤ .15. We explain why these correlations are biased in typical single-method studies and argue that this problem can only be addressed with multimethod designs. We also explain why ordinary relative comparisons can provide a more generalizable way of estimating (additive, narrow-sense) heritability than the b…
An interdisciplinary linked-lives approach to individual differences in social behaviour
Broad and narrow environmental and genetic sources of personality differences
OBJECTIVE: Several personality theories distinguish between rather genetically rooted, universal dispositional traits (DTs) and rather environmentally shaped, more contextualized characteristic adaptations (CAs). However, no study so far has compared different measures of theoretically postulated DTs and CAs regarding their environmental and genetic components while considering differences in measurement abstraction and reliability. This study ai…
Does Emotional Stability Form the Core of Self-Evaluations? A Multi-Rater Cross-Lagged Panel Study
Several personality models suggest that emotional stability represents a rather core trait that is more basic than self-esteem, self-efficacy, and locus of control proposed as more particularized characteristics within the personality system. Simultaneously, a common core construct underlying these four aspects of self-evaluations has been hypothesized. In this study, we investigated whether emotional stability qualifies as more basic construct a…
Age differences in personality traits and social desirability
Basic value orientations and moral foundations
How genetic and environmental variance in personality traits shift across the life span
Decades of research have shown that about half of individual differences in personality traits is heritable. Recent studies have reported that heritability is not fixed, but instead decreases across the life span. However, findings are inconsistent and it is yet unclear whether these trends are because of a waning importance of heritable tendencies, attributable to cumulative experiential influences with age, or because of nonlinear patterns sugg…
Genetic and environmental variation in political orientation in adolescence and early adulthood
Political orientation is often assumed to be shaped by socialization processes; however, previous studies have shown substantial genetic variance components in party affiliation, political attitudes and behaviors, or closely related personality traits. The majority of these studies have relied on the Classical Twin Design, which comes with restrictive assumptions, some of which are easily violated. Moreover, most analyses lack a perspective of ag…
The healthy personality from a basic trait perspective
What basic personality traits characterize the psychologically healthy individual? The purpose of this article was to address this question by generating an expert-consensus model of the healthy person in the context of the 30 facets (and 5 domains) of the Revised NEO Personality Inventory (Costa & McCrae, 1992) system of traits. In a first set of studies, we found that the healthy personality can be described, with a high level of agreement, in …
New evidence on the link between genes, psychological traits, and political engagement
We investigate the link between genes, psychological traits, and political engagement using a new data set containing information on a large sample of young German twins. The TwinLife Study enables us to examine the predominant model of personality, the Big Five framework, as well as traits that fall outside the Big Five, such as cognitive ability, providing a more comprehensive understanding of the underpinnings of political engagement. Our resu…
The policy relevance of personality traits
Personality traits are powerful predictors of outcomes in the domains of education, work, relationships, health, and well-being. The recognized importance of personality traits has raised questions about their policy relevance, that is, their potential to inform policy actions designed to improve human welfare. Traditionally, the use of personality traits in applied settings has been predicated on their ability to predict valued outcomes, typical…
Personality characteristics below facets
Genetic and environmental influences on sociopolitical attitudes
A new paradigm has emerged in which both genetic and environmental factors are cited as possible influences on sociopolitical attitudes. Despite the increasing acceptance of this paradigm, several aspects of the approach remain underdeveloped. Specifically, limitations arise from a reliance on a twins-only design, and all previous studies have used self-reports only. There are also questions about the extent to which existing findings generalize …
The Genetic and the Sociological
We argue that consilience, or the unity of all knowledge, is an important goal for all researchers to pursue. The philosophical foundations of this position are explored, and then an empirical study is presented that illustrates what could be gained by melding behaviour genetic, sociological and other perspectives on politics. Twin data are analysed to examine the extent to which sociological factors can explain the variation in three dependent v…
Social Hypotheses of Homophobia
Genetic Hypotheses of Homophobia
Personality traits below facets
It has been argued that facets do not represent the bottom of the personality hierarchy-even more specific personality characteristics, nuances, could be useful for describing and understanding individuals and their differences. Combining 2 samples of German twins, we assessed the consensual validity (correlations across different observers), rank-order stability, and heritability of nuances. Personality nuances were operationalized as the 240 it…
The nature of creativity
This multitrait multimethod twin study examined the structure and sources of individual differences in creativity. According to different theoretical and metrological perspectives, as well as suggestions based on previous research, we expected 2 aspects of individual differences, which can be described as perceived creativity and creative test performance. We hypothesized that perceived creativity, reflecting typical creative thinking and behavio…
Genetic Foundations of Attitude Formation
Since the pioneering work of Eaves and Eysenck (1974) appeared in Nature some 40 years ago, psychologists, sociologists, political scientists, and behavioral geneticists have investigated the effects of nature and nurture on the formation of social attitudes. It has consistently been found that manifestations of social attitudes (i.e., preferences, values, and beliefs pertaining to things such as politics, religion and the treatment of ingroups a…
Personality Differences and Development
Personality traits below facets
It has been argued that facets do not represent the bottom of the personality hierarchy-even more specific personality characteristics, nuances, could be useful for describing and understanding individuals and their differences. Combining 2 samples of German twins, we assessed the consensual validity (correlations across different observers), rank-order stability, and heritability of nuances. Personality nuances were operationalized as the 240 it…
Left or right? Sources of political orientation
In this study, we used an extended twin family design to investigate the influences of genetic and cultural transmission as well as different sources of nonrandom mating on 2 core aspects of political orientation: acceptance of inequality and rejecting system change. In addition, we studied the sources of phenotypic links between Big Five personality traits and political beliefs using self- and other reports. Data of 1,992 individuals (224 monozy…
The policy relevance of personality traits
Personality traits are powerful predictors of outcomes in the domains of education, work, relationships, health, and well-being. The recognized importance of personality traits has raised questions about their policy relevance, that is, their potential to inform policy actions designed to improve human welfare. Traditionally, the use of personality traits in applied settings has been predicated on their ability to predict valued outcomes, typical…
Patterns and sources of adult personality development
The present study examined the patterns and sources of 10-year stability and change of adult personality assessed by the 5 domains and 30 facets of the Revised NEO Personality Inventory. Phenotypic and biometric analyses were performed on data from 126 identical and 61 fraternal twins from the Bielefeld Longitudinal Study of Adult Twins (BiLSAT). Consistent with previous research, LGM analyses revealed significant mean-level changes in domains an…
Nature and nurture of the interplay between personality traits and major life goals
Modern personality theories differ in their assumptions about the structure and etiology of the interplay between personality traits and motivational constructs. The present study examined the genetic and environmental sources of the interplay between the Big Five and major life goals concurrently and across time in order to provide a more decisive evaluation of the conflicting assumptions stated in the five-factor theory as opposed to socioanaly…
New evidence on the link between genes, psychological traits, and political engagement
We investigate the link between genes, psychological traits, and political engagement using a new data set containing information on a large sample of young German twins. The TwinLife Study enables us to examine the predominant model of personality, the Big Five framework, as well as traits that fall outside the Big Five, such as cognitive ability, providing a more comprehensive understanding of the underpinnings of political engagement. Our resu…
Personality characteristics below facets
Patterns and sources of personality development in old age
Despite abundant evidence that personality development continues in adulthood, little is known about the patterns and sources of personality development in old age. We thus investigated mean-level trends and individual differences in change as well as the genetic and environmental sources of rank-order continuity and change in several personality traits (neuroticism, extraversion, openness, agreeableness, conscientiousness, perceived control, and…
Genetic and environmental influences on sociopolitical attitudes
A new paradigm has emerged in which both genetic and environmental factors are cited as possible influences on sociopolitical attitudes. Despite the increasing acceptance of this paradigm, several aspects of the approach remain underdeveloped. Specifically, limitations arise from a reliance on a twins-only design, and all previous studies have used self-reports only. There are also questions about the extent to which existing findings generalize …
The nature of creativity
This multitrait multimethod twin study examined the structure and sources of individual differences in creativity. According to different theoretical and metrological perspectives, as well as suggestions based on previous research, we expected 2 aspects of individual differences, which can be described as perceived creativity and creative test performance. We hypothesized that perceived creativity, reflecting typical creative thinking and behavio…
Sources of cumulative continuity in personality
This study analyzed the etiology of rank-order stability and change in personality over a time period of 13 years in order to explain cumulative continuity with age. NEO five-factor inventory self- and peer report data from 696 monozygotic and 387 dizygotic twin pairs reared together were analyzed using a combination of multiple-rater twin, latent state-trait, and autoregressive simplex models. Correcting for measurement error, this model disenta…
Genetic and environmental variation in political orientation in adolescence and early adulthood
Political orientation is often assumed to be shaped by socialization processes; however, previous studies have shown substantial genetic variance components in party affiliation, political attitudes and behaviors, or closely related personality traits. The majority of these studies have relied on the Classical Twin Design, which comes with restrictive assumptions, some of which are easily violated. Moreover, most analyses lack a perspective of ag…
The healthy personality from a basic trait perspective
What basic personality traits characterize the psychologically healthy individual? The purpose of this article was to address this question by generating an expert-consensus model of the healthy person in the context of the 30 facets (and 5 domains) of the Revised NEO Personality Inventory (Costa & McCrae, 1992) system of traits. In a first set of studies, we found that the healthy personality can be described, with a high level of agreement, in …
Patterns and sources of continuity and change of energetic and temporal aspects of temperament in adulthood
This study investigated the mean-level and individual-level trends as well as the genetic and environmental sources of rank-order continuity and change in temperament traits (Briskness, Perseveration, Sensory Sensitivity, Emotional Reactivity, Endurance, and Activity). We analyzed self-reports and peer ratings from 2 adult age groups of twins, aged 15-30 (n = 348; 113 monozygotic and 61 dizygotic twin pairs) and 31-67 (n = 352; 110 monozygotic an…
Age differences in personality traits and social desirability
Basic value orientations and moral foundations
How genetic and environmental variance in personality traits shift across the life span
Decades of research have shown that about half of individual differences in personality traits is heritable. Recent studies have reported that heritability is not fixed, but instead decreases across the life span. However, findings are inconsistent and it is yet unclear whether these trends are because of a waning importance of heritable tendencies, attributable to cumulative experiential influences with age, or because of nonlinear patterns sugg…
The Genetic and the Sociological
We argue that consilience, or the unity of all knowledge, is an important goal for all researchers to pursue. The philosophical foundations of this position are explored, and then an empirical study is presented that illustrates what could be gained by melding behaviour genetic, sociological and other perspectives on politics. Twin data are analysed to examine the extent to which sociological factors can explain the variation in three dependent v…
Patterns and sources of adult personality development
The present study examined the patterns and sources of 10-year stability and change of adult personality assessed by the 5 domains and 30 facets of the Revised NEO Personality Inventory. Phenotypic and biometric analyses were performed on data from 126 identical and 61 fraternal twins from the Bielefeld Longitudinal Study of Adult Twins (BiLSAT). Consistent with previous research, LGM analyses revealed significant mean-level changes in domains an…
Sources of Variance in Personality Facets
This study considered the validity of the personality structure based on the Five-Factor Model using both self- and peer reports on twins' NEO-PI-R facets. Separating common from specific genetic variance in self- and peer reports, this study examined genetic substance of different trait levels and rater-specific perspectives relating to personality judgments. Data of 919 twin pairs were analyzed using a multiple-rater twin model to disentangle g…
Nature and nurture of the interplay between personality traits and major life goals
Modern personality theories differ in their assumptions about the structure and etiology of the interplay between personality traits and motivational constructs. The present study examined the genetic and environmental sources of the interplay between the Big Five and major life goals concurrently and across time in order to provide a more decisive evaluation of the conflicting assumptions stated in the five-factor theory as opposed to socioanaly…
Sources of cumulative continuity in personality
This study analyzed the etiology of rank-order stability and change in personality over a time period of 13 years in order to explain cumulative continuity with age. NEO five-factor inventory self- and peer report data from 696 monozygotic and 387 dizygotic twin pairs reared together were analyzed using a combination of multiple-rater twin, latent state-trait, and autoregressive simplex models. Correcting for measurement error, this model disenta…
Genetic and Environmental Influences on Personality Profile Stability
The present study is the first to disentangle the genetic and environmental influences on personality profile stability. Spanning a period of 10 years, we analyzed the etiology of 3 aspects of profile stability (overall profile stability, distinctive profile stability, and profile normativeness) using self‐ and peer reports from 539 identical and 280 fraternal twins reared together. This 3‐wave multirater twin design allowed us to estimate the ge…
Left or right? Sources of political orientation
In this study, we used an extended twin family design to investigate the influences of genetic and cultural transmission as well as different sources of nonrandom mating on 2 core aspects of political orientation: acceptance of inequality and rejecting system change. In addition, we studied the sources of phenotypic links between Big Five personality traits and political beliefs using self- and other reports. Data of 1,992 individuals (224 monozy…
Patterns and sources of continuity and change of energetic and temporal aspects of temperament in adulthood
This study investigated the mean-level and individual-level trends as well as the genetic and environmental sources of rank-order continuity and change in temperament traits (Briskness, Perseveration, Sensory Sensitivity, Emotional Reactivity, Endurance, and Activity). We analyzed self-reports and peer ratings from 2 adult age groups of twins, aged 15-30 (n = 348; 113 monozygotic and 61 dizygotic twin pairs) and 31-67 (n = 352; 110 monozygotic an…
What Drives Adult Personality Development? A Comparison of Theoretical Perspectives and Empirical Evidence
Increasing numbers of empirical studies provide compelling evidence that personality traits change across the entire lifespan. What initiates this continuing personality development and how does this development proceed? In this paper, we compare six theoretical perspectives that offer testable predictions about why personality develops the way it does and identify limitations and potentials of these perspectives by reviewing how they hold up aga…
Studying Changes in Life Circumstances and Personality
Most theories of personality development posit that changes in life circumstances (e.g. due to major life events) can lead to changes in personality, but few studies have examined the exact time course of these changes. In this article, we argue that time needs to be considered explicitly in theories and empirical studies on personality development. We discuss six notions on the role of time in personality development. First, people can differ be…
Distinct Heritable Influences Underpin In-Group Love and Out-Group Derogation
In-group favoritism has often been conceptualized as the flip side of out-group derogation. Whereas research has dissociated these attitudes at the phenotypic level, it is currently unknown whether such dissociation is also evident at the biological level. Here, using an adult German twin sample, which provided ratings on patriotism, nationalism, and prejudice, we tested whether common or distinct heritable influences best explained variation in …
Genetic Foundations of Attitude Formation
Since the pioneering work of Eaves and Eysenck (1974) appeared in Nature some 40 years ago, psychologists, sociologists, political scientists, and behavioral geneticists have investigated the effects of nature and nurture on the formation of social attitudes. It has consistently been found that manifestations of social attitudes (i.e., preferences, values, and beliefs pertaining to things such as politics, religion and the treatment of ingroups a…
Personality Differences and Development
Patterns and sources of personality development in old age
Despite abundant evidence that personality development continues in adulthood, little is known about the patterns and sources of personality development in old age. We thus investigated mean-level trends and individual differences in change as well as the genetic and environmental sources of rank-order continuity and change in several personality traits (neuroticism, extraversion, openness, agreeableness, conscientiousness, perceived control, and…
Social Hypotheses of Homophobia
Genetic Hypotheses of Homophobia
Personality traits below facets
It has been argued that facets do not represent the bottom of the personality hierarchy-even more specific personality characteristics, nuances, could be useful for describing and understanding individuals and their differences. Combining 2 samples of German twins, we assessed the consensual validity (correlations across different observers), rank-order stability, and heritability of nuances. Personality nuances were operationalized as the 240 it…
The nature of creativity
This multitrait multimethod twin study examined the structure and sources of individual differences in creativity. According to different theoretical and metrological perspectives, as well as suggestions based on previous research, we expected 2 aspects of individual differences, which can be described as perceived creativity and creative test performance. We hypothesized that perceived creativity, reflecting typical creative thinking and behavio…
The Genetic and the Sociological
We argue that consilience, or the unity of all knowledge, is an important goal for all researchers to pursue. The philosophical foundations of this position are explored, and then an empirical study is presented that illustrates what could be gained by melding behaviour genetic, sociological and other perspectives on politics. Twin data are analysed to examine the extent to which sociological factors can explain the variation in three dependent v…
Genetic and environmental influences on sociopolitical attitudes
A new paradigm has emerged in which both genetic and environmental factors are cited as possible influences on sociopolitical attitudes. Despite the increasing acceptance of this paradigm, several aspects of the approach remain underdeveloped. Specifically, limitations arise from a reliance on a twins-only design, and all previous studies have used self-reports only. There are also questions about the extent to which existing findings generalize …
New evidence on the link between genes, psychological traits, and political engagement
We investigate the link between genes, psychological traits, and political engagement using a new data set containing information on a large sample of young German twins. The TwinLife Study enables us to examine the predominant model of personality, the Big Five framework, as well as traits that fall outside the Big Five, such as cognitive ability, providing a more comprehensive understanding of the underpinnings of political engagement. Our resu…
The policy relevance of personality traits
Personality traits are powerful predictors of outcomes in the domains of education, work, relationships, health, and well-being. The recognized importance of personality traits has raised questions about their policy relevance, that is, their potential to inform policy actions designed to improve human welfare. Traditionally, the use of personality traits in applied settings has been predicated on their ability to predict valued outcomes, typical…
Personality characteristics below facets
Genetic and environmental variation in political orientation in adolescence and early adulthood
Political orientation is often assumed to be shaped by socialization processes; however, previous studies have shown substantial genetic variance components in party affiliation, political attitudes and behaviors, or closely related personality traits. The majority of these studies have relied on the Classical Twin Design, which comes with restrictive assumptions, some of which are easily violated. Moreover, most analyses lack a perspective of ag…
The healthy personality from a basic trait perspective
What basic personality traits characterize the psychologically healthy individual? The purpose of this article was to address this question by generating an expert-consensus model of the healthy person in the context of the 30 facets (and 5 domains) of the Revised NEO Personality Inventory (Costa & McCrae, 1992) system of traits. In a first set of studies, we found that the healthy personality can be described, with a high level of agreement, in …
Basic value orientations and moral foundations
Psychology (29 obras) · Social Psychology (26 obras) · Personality (25 obras) · Developmental psychology (24 obras) · Big Five personality traits (21 obras) · Cognitive Abilities and Testing (21 obras) · Personality Traits and Psychology (20 obras) · Heritability (16 obras) · Variance (accounting) (12 obras) · Twin study (11 obras)