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Détail de l'auteur
Auteur Tomotaka UMEMURA |
Documents disponibles écrits par cet auteur (2)
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Positive and negative valences of identities: Longitudinal associations of identity content valences with adaptive and maladaptive functioning among Japanese young adults / Shogo HIHARA in Development and Psychopathology, 34-4 (October 2022)
[article]
Titre : Positive and negative valences of identities: Longitudinal associations of identity content valences with adaptive and maladaptive functioning among Japanese young adults Type de document : Texte imprimé et/ou numérique Auteurs : Shogo HIHARA, Auteur ; Kazumi SUGIMURA, Auteur ; Tomotaka UMEMURA, Auteur ; Yasuhiro IWASA, Auteur ; Moin SYED, Auteur Article en page(s) : p.1516-1530 Langues : Anglais (eng) Mots-clés : Humans Japan Longitudinal Studies Phobia, Social Shame Social Identification Young Adult adaptive functioning identity content valences longitudinal maladaptive functioning Index. décimale : PER Périodiques Résumé : Erikson's psychosocial developmental theory assumes that valence of one's identity (i.e., identity content valence) defined by positive and negative identity elements is important for understanding patterns of (mal)adaptation. However, previous empirical research on identity and (mal)adaptation has focused on how individuals deal with identity issues (e.g., exploration and commitment), while neglecting identity content valences. In contrast, this study assessed identity content valences in terms of positive and negative identity elements. Theoretically, identity content valences affect (mal)adaptation, whereas individuals' (mal)adaptation influences their identities. Consequently, this study examined reciprocal relationships between identity content valences and adaptation (i.e., prosocial behaviors) and maladaptation (e.g., externalizing symptoms) in a sample of Japanese young adults, including socioculturally relevant indicators of maladaptation (i.e., hikikomori symptoms and suicidal ideation). This study includes 2,313 Japanese young adults who participated in a three-wave longitudinal study. The cross-lagged panel model and random intercept cross-lagged panel model revealed reciprocal relationships between identity content valences and (mal)adaptation at the between-person level. Negative identity elements positively predicted suicidal ideation. Meanwhile, prosocial behaviors positively predicted positive identity elements, whereas hikikomori symptoms and suicidal ideation positively predicted negative identity elements. These relationships were significant only for socioculturally relevant indicators, suggesting the importance of considering sociocultural contexts. En ligne : http://dx.doi.org/10.1017/s0954579421000043 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=489
in Development and Psychopathology > 34-4 (October 2022) . - p.1516-1530[article] Positive and negative valences of identities: Longitudinal associations of identity content valences with adaptive and maladaptive functioning among Japanese young adults [Texte imprimé et/ou numérique] / Shogo HIHARA, Auteur ; Kazumi SUGIMURA, Auteur ; Tomotaka UMEMURA, Auteur ; Yasuhiro IWASA, Auteur ; Moin SYED, Auteur . - p.1516-1530.
Langues : Anglais (eng)
in Development and Psychopathology > 34-4 (October 2022) . - p.1516-1530
Mots-clés : Humans Japan Longitudinal Studies Phobia, Social Shame Social Identification Young Adult adaptive functioning identity content valences longitudinal maladaptive functioning Index. décimale : PER Périodiques Résumé : Erikson's psychosocial developmental theory assumes that valence of one's identity (i.e., identity content valence) defined by positive and negative identity elements is important for understanding patterns of (mal)adaptation. However, previous empirical research on identity and (mal)adaptation has focused on how individuals deal with identity issues (e.g., exploration and commitment), while neglecting identity content valences. In contrast, this study assessed identity content valences in terms of positive and negative identity elements. Theoretically, identity content valences affect (mal)adaptation, whereas individuals' (mal)adaptation influences their identities. Consequently, this study examined reciprocal relationships between identity content valences and adaptation (i.e., prosocial behaviors) and maladaptation (e.g., externalizing symptoms) in a sample of Japanese young adults, including socioculturally relevant indicators of maladaptation (i.e., hikikomori symptoms and suicidal ideation). This study includes 2,313 Japanese young adults who participated in a three-wave longitudinal study. The cross-lagged panel model and random intercept cross-lagged panel model revealed reciprocal relationships between identity content valences and (mal)adaptation at the between-person level. Negative identity elements positively predicted suicidal ideation. Meanwhile, prosocial behaviors positively predicted positive identity elements, whereas hikikomori symptoms and suicidal ideation positively predicted negative identity elements. These relationships were significant only for socioculturally relevant indicators, suggesting the importance of considering sociocultural contexts. En ligne : http://dx.doi.org/10.1017/s0954579421000043 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=489 Very extensive nonmaternal care predicts mother–infant attachment disorganization: Convergent evidence from two samples / Nancy L. HAZEN in Development and Psychopathology, 27-3 (August 2015)
[article]
Titre : Very extensive nonmaternal care predicts mother–infant attachment disorganization: Convergent evidence from two samples Type de document : Texte imprimé et/ou numérique Auteurs : Nancy L. HAZEN, Auteur ; Sydnye D. ALLEN, Auteur ; Caroline HEATON CHRISTOPHER, Auteur ; Tomotaka UMEMURA, Auteur ; Deborah B. JACOBVITZ, Auteur Article en page(s) : p.649-661 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : We examined whether a maximum threshold of time spent in nonmaternal care exists, beyond which infants have an increased risk of forming a disorganized infant–mother attachment. The hours per week infants spent in nonmaternal care at 7–8 months were examined as a continuous measure and as a dichotomous threshold (over 40, 50 and 60 hr/week) to predict infant disorganization at 12–15 months. Two different samples (Austin and NICHD) were used to replicate findings and control for critical covariates: mothers' unresolved status and frightening behavior (assessed in the Austin sample, N = 125), quality of nonmaternal caregiving (assessed in the NICHD sample, N = 1,135), and family income and infant temperament (assessed in both samples). Only very extensive hours of nonmaternal care (over 60 hr/week) and mothers' frightening behavior independently predicted attachment disorganization. A polynomial logistic regression performed on the larger NICHD sample indicated that the risk of disorganized attachment exponentially increased after exceeding 60 hr/week. In addition, very extensive hours of nonmaternal care only predicted attachment disorganization after age 6 months (not prior). Findings suggest that during a sensitive period of attachment formation, infants who spend more than 60 hr/week in nonmaternal care may be at an increased risk of forming a disorganized attachment. En ligne : http://dx.doi.org/10.1017/S0954579414000893 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=263
in Development and Psychopathology > 27-3 (August 2015) . - p.649-661[article] Very extensive nonmaternal care predicts mother–infant attachment disorganization: Convergent evidence from two samples [Texte imprimé et/ou numérique] / Nancy L. HAZEN, Auteur ; Sydnye D. ALLEN, Auteur ; Caroline HEATON CHRISTOPHER, Auteur ; Tomotaka UMEMURA, Auteur ; Deborah B. JACOBVITZ, Auteur . - p.649-661.
Langues : Anglais (eng)
in Development and Psychopathology > 27-3 (August 2015) . - p.649-661
Index. décimale : PER Périodiques Résumé : We examined whether a maximum threshold of time spent in nonmaternal care exists, beyond which infants have an increased risk of forming a disorganized infant–mother attachment. The hours per week infants spent in nonmaternal care at 7–8 months were examined as a continuous measure and as a dichotomous threshold (over 40, 50 and 60 hr/week) to predict infant disorganization at 12–15 months. Two different samples (Austin and NICHD) were used to replicate findings and control for critical covariates: mothers' unresolved status and frightening behavior (assessed in the Austin sample, N = 125), quality of nonmaternal caregiving (assessed in the NICHD sample, N = 1,135), and family income and infant temperament (assessed in both samples). Only very extensive hours of nonmaternal care (over 60 hr/week) and mothers' frightening behavior independently predicted attachment disorganization. A polynomial logistic regression performed on the larger NICHD sample indicated that the risk of disorganized attachment exponentially increased after exceeding 60 hr/week. In addition, very extensive hours of nonmaternal care only predicted attachment disorganization after age 6 months (not prior). Findings suggest that during a sensitive period of attachment formation, infants who spend more than 60 hr/week in nonmaternal care may be at an increased risk of forming a disorganized attachment. En ligne : http://dx.doi.org/10.1017/S0954579414000893 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=263