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| 2. |
- Duell, Natasha, et al.
(författare)
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A cross-sectional examination of response inhibition and working memory on the Stroop task
- 2018
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Ingår i: Cognitive development. - : Elsevier BV. - 0885-2014 .- 1879-226X. ; 47, s. 19-31
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Tidskriftsartikel (refereegranskat)abstract
- The authors examined the association between working memory and response inhibition on the Stroop task using a cross-sectional, international sample of 5099 individuals (49.3% male) ages 10–30 (M = 17.04 years; SD = 5.9). Response inhibition was measured using a Stroop task that included "equal" and "unequal" blocks, during which the relative frequency of neutral and incongruent trials was manipulated. Competing stimuli in incongruent trials evinced inhibitory functioning, and having a lower proportion of incongruent trials (as in unequal blocks) placed higher demands on working memory. Results for accuracy indicated that age and working memory were independently associated with response inhibition. Age differences in response inhibition followed a curvilinear trajectory, with performance improving into early adulthood. Response inhibition was greatest among individuals with high working memory. For response time, age uniquely predicted response inhibition in unequal blocks. In equal blocks, age differences in response inhibition varied as a function of working memory, with age differences being least pronounced among individuals with high working memory. The implications of considering the association between response inhibition and working memory in the context of development are discussed.
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| 3. |
- Duell, Natasha, et al.
(författare)
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Age patterns in risk taking across the world
- 2018
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Ingår i: Journal of Youth and Adolescence. - : Springer Science and Business Media LLC. - 0047-2891 .- 1573-6601. ; 47:5, s. 1052-1072
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Tidskriftsartikel (refereegranskat)abstract
- Epidemiological data indicate that risk behaviors are among the leading causes of adolescent morbidity and mortality worldwide. Consistent with this, laboratory-based studies of age differences in risk behavior allude to a peak in adolescence, suggesting that adolescents demonstrate a heightened propensity, or inherent inclination, to take risks. Unlike epidemiological reports, studies of risk taking propensity have been limited to Western samples, leaving questions about the extent to which heightened risk taking propensity is an inherent or culturally constructed aspect of adolescence. In the present study, age patterns in risk-taking propensity (using two laboratory tasks: the Stoplight and the BART) and real-world risk taking (using self-reports of health and antisocial risk taking) were examined in a sample of 5,227 individuals (50.7% female) ages 10-30 (M = 17.05 years, SD = 5.91) from 11 Western and non-Western countries (China, Colombia, Cyprus, India, Italy, Jordan, Kenya, the Philippines, Sweden, Thailand, and the US). Two hypotheses were tested: (1) risk taking follows an inverted-U pattern across age groups, peaking earlier on measures of risk taking propensity than on measures of real-world risk taking, and (2) age patterns in risk taking propensity are more consistent across countries than age patterns in real-world risk taking. Overall, risk taking followed the hypothesized inverted-U pattern across age groups, with health risk taking evincing the latest peak. Age patterns in risk taking propensity were more consistent across countries than age patterns in real-world risk taking. Results suggest that although the association between age and risk taking is sensitive to measurement and culture, around the world, risk taking is generally highest among late adolescents
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| 4. |
- Duell, Natasha, et al.
(författare)
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Correction : Age Patterns in Risk Taking Across the World (vol 47, pg 1052, 2018)
- 2019
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Ingår i: Journal of Youth and Adolescence. - : Springer Science and Business Media LLC. - 0047-2891 .- 1573-6601. ; 48:4, s. 835-836
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Tidskriftsartikel (refereegranskat)abstract
- In the original publication, the legends for Figs 4 and 5 were incorrect, such that each regression line was mislabeled with the incorrect country. Below are the correctly labeled countries. The authors apologize for any confusion or misinformation this error may have caused.
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| 5. |
- Duell, Natasha, et al.
(författare)
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Interaction of reward seeking and self-regulation in the prediction of risk taking : A cross-national test of the dual systems model
- 2016
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Ingår i: Developmental Psychology. - : American Psychological Association (APA). - 0012-1649 .- 1939-0599. ; 52:10, s. 1593-1605
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Tidskriftsartikel (refereegranskat)abstract
- In the present analysis, we test the dual systems model of adolescent risk taking in a cross-national sample of over 5,200 individuals aged 10 through 30 (M = 17.05 years, SD = 5.91) from 11 countries. We examine whether reward seeking and self-regulation make independent, additive, or interactive contributions to risk taking, and ask whether these relations differ as a function of age and culture. To compare across cultures, we conduct 2 sets of analyses: 1 comparing individuals from Asian and Western countries, and 1 comparing individuals from low- and high-GDP countries. Results indicate that reward seeking and self-regulation have largely independent associations with risk taking and that the influences of each variable on risk taking are not unique to adolescence, but that their link to risk taking varies across cultures. © 2016 American Psychological Association.
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| 6. |
- Fanti, Kostas A., et al.
(författare)
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Validation of the Greek cypriot translation of the triarchic psychopathy measure
- 2016
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Ingår i: Journal of Personality Assessment. - : Taylor & Francis. - 0022-3891 .- 1532-7752. ; 98:2, s. 146-154
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Tidskriftsartikel (refereegranskat)abstract
- Psychopathy is conceived of as a pathological constellation of personality traits, manifested in aberrant behavioral, interpersonal, and emotional tendencies. This study examined within a Greek-speaking nonclinical sample (N = 419) associations between differing phenotypic dimensions of psychopathy (boldness, meanness, disinhibition) assessed via the Triarchic Psychopathy Measure (TriPM) and self-report criterion measures of psychopathology, personality, and history of abuse and neglect. Consistent with predictions of the triarchic model of psychopathy, evidence was found for distinct correlates of the 3 phenotypic dimensions. Boldness was associated with both adaptive (immunity to anxiety/distress, fearlessness, low hostility) and maladaptive tendencies (grandiose manipulative traits, Machiavellian features including desire for control/status, and verbal aggression). Meanness was related to callous and unemotional traits, features of Machiavellianism (e.g., amoral manipulation and distrust of others), physical aggression, and absence of positive parenting. Disinhibition, by contrast, was characterized by anxiety and distress, exposure to violence, and retrospective accounts of abuse history, along with impulsive, irresponsible, and hostile tendencies. These findings indicate that the Greek-Cypriot translation of the TriPM effectively assesses the constructs of the triarchic model and extend what we know about their empirical correlates.
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| 7. |
- Icenogle, Grace, et al.
(författare)
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Adolescents’ cognitive capacity reaches adult levels prior to their psychosocial maturity : Evidence for a "maturity gap" in a multinational, cross-sectional sample
- 2019
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Ingår i: Law and human behavior. - : American Psychological Association (APA). - 0147-7307 .- 1573-661X. ; 43:1, s. 69-85
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Tidskriftsartikel (refereegranskat)abstract
- All countries distinguish between minors and adults for various legal purposes. Recent U.S. Supreme Court cases concerning the legal status of juveniles have consulted psychological science to decide where to draw these boundaries. However, little is known about the robustness of the relevant research, because it has been conducted largely in the U.S. and other Western countries. To the extent that lawmakers look to research to guide their decisions, it is important to know how generalizable the scientific conclusions are. The present study examines 2 psychological phenomena relevant to legal questions about adolescent maturity: cognitive capacity, which undergirds logical thinking, and psychosocial maturity, which comprises individuals' ability to restrain themselves in the face of emotional, exciting, or risky stimuli. Age patterns of these constructs were assessed in 5,227 individuals (50.7% female), ages 10-30 (M = 17.05, SD = 5.91) from 11 countries. Importantly, whereas cognitive capacity reached adult levels around age 16, psychosocial maturity reached adult levels beyond age 18, creating a "maturity gap" between cognitive and psychosocial development. Juveniles may be capable of deliberative decision making by age 16, but even young adults may demonstrate "immature" decision making in arousing situations. We argue it is therefore reasonable to have different age boundaries for different legal purposes: 1 for matters in which cognitive capacity predominates, and a later 1 for matters in which psychosocial maturity plays a substantial role. © 2019 American Psychological Association.
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| 8. |
- Icenogle, Grace, et al.
(författare)
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Puberty Predicts Approach But Not Avoidance on the Iowa Gambling Task in a Multinational Sample
- 2017
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Ingår i: Child Development. - : Wiley. - 0009-3920 .- 1467-8624. ; 88:5, s. 598-1614
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Tidskriftsartikel (refereegranskat)abstract
- According to the dual systems model of adolescent risk taking, sensation seeking and impulse control follow different developmental trajectories across adolescence and are governed by two different brain systems. The authors tested whether different underlying processes also drive age differences in reward approach and cost avoidance. Using a modified Iowa Gambling Task in a multinational, cross-sectional sample of 3,234 adolescents (ages 9-17; M = 12.87, SD = 2.36), pubertal maturation, but not age, predicted reward approach, mediated through higher sensation seeking. In contrast, age, but not pubertal maturation, predicted increased cost avoidance, mediated through greater impulse control. These findings add to evidence that adolescent behavior is best understood as the product of two interacting, but independently developing, brain systems. © 2016 The Society for Research in Child Development, Inc.
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| 9. |
- Kourmouli, Niki, et al.
(författare)
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Heterochromatin and tri-methylated lysine 20 of histone H4 in animals
- 2004
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Ingår i: Journal of Cell Science. - : The Company of Biologists. - 0021-9533 .- 1477-9137. ; 117:14, s. 2491-2501
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Tidskriftsartikel (refereegranskat)abstract
- Tri-methylated lysine 20 on histone H4 (Me(3)K20H4) is a marker of constitutive heterochromatin in murine interphase and metaphase cells. Heterochromatin marked by Me(3)K20H4 replicates late during S phase of the cell cycle. Serum starvation increases the number of cells that exhibit high levels of Me(3)K20H4 at constitutive heterochromatin. Me(3)K20H4 is also present at the centromeric heterochromatin of most meiotic chromosomes during spermatogenesis and at the pseudoautosomal region, as well as at some telomeres. It is not present on the XY-body. During murine embryogenesis the maternal pronucleus contains Me(3)K20H4; Me(3)K20H4 is absent from the paternal pronucleus. On Drosophila polytene chromosomes Me(3)K20H4 is present in a `punctate pattern' at many chromosomal bands, including the chromocenter. In coccids it is present on the facultatively heterochromatinised paternal chromosome set. We also present evidence that Me(3)K20H4 is dependent upon H3-specific Suv(3)9 histone methyltransferase activity, suggesting that there may be `epigenetic cross-talk' between histones H3 and H4.
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| 10. |
- López-Romero, Laura, et al.
(författare)
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Testing the predictive and incremental validity of callous-unemotional traits versus the multidimensional psychopathy construct in preschool children
- 2022
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Ingår i: Journal of criminal justice. - : Elsevier. - 0047-2352 .- 1873-6203. ; 80
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Tidskriftsartikel (refereegranskat)abstract
- This study aimed to test the predictive and incremental value of psychopathic trait dimensions in early childhood. To this end, a callous-unemotional (CU)-based approach was compared to the multidimensional psychopathic personality approach in predicting future and stable conduct problems (CP) and aggression, whilst controlling for well-established risk factors for child CP. Prospective longitudinal data were collected from a community sample of 2247 children (48.6% girls) aged three to six (Mage = 4.25; SD = 0.91) at the initial assessment. Participants were followed annually for two years, with information provided by parents. Children were assigned to six mutually exclusive groups based on their baseline levels of psychopathic traits and conduct problems. Results showed that, after accounting for sociodemographic variables, temperamental features (e.g., fearlessness), and ADHD symptoms, children scoring high in all psychopathic traits and high in CP were at increased risk to display future and stable CP, reactive and proactive aggression, followed by the group of children high in CU traits and CP. Future research on child psychopathy may benefit from considering the constellation of co-occurring interpersonal, affective and behavioral psychopathic traits, and could inform developmental models aiming to explain heterogeneity in child CP.
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