研究者詳細 - 山形　伸二

論文 - 山形　伸二

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事前登録研究：Big Fiveの再検査効果――参加者間・参加者内計画を用いた検討査読有り

上田皐介, 山形伸二

パーソナリティ研究 33 巻 ( 3 ) 頁： 179 - 181 2025年1月

自己呈示する特性の記憶想起は他の特性に影響を与えるか―上田・山形 (2023) のデータを用いた探索的検討査読有り

上田皐介・山形伸二

人間環境学研究 22 巻 ( 1 ) 頁： 37 - 42 2024年6月

Big Fiveの「社会的望ましさの認知」と「個人的望ましさ」――相関とその関係流動性による調整査読有り

上田皐介, 山形伸二

パーソナリティ研究 32 巻 ( 3 ) 頁： 152 - 163 2024年3月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：日本パーソナリティ心理学会

本研究は（1） Big Five各特性の社会的望ましさの認知と個人的望ましさが正に相関するか，（2）その強さが関係流動性の認知により異なるかを検討した。参加者（研究1:大学生224名，研究2:調査会社のモニター558名）は，Big Five尺度の各項目の社会的望ましさの認知と個人的望ましさ，関係流動性の認知を回答した。確認的因子分析の結果，社会的望ましさの認知と個人的望ましさの両方で5因子構造（＋ランダム切片または方法論的因子）が最適であった。社会的望ましさの認知と個人的望ましさは全特性で正に相関し（研究1: rs ＝ .52–.69,研究2: rs ＝ .59–.67），その強さは一部の特性において関係流動性の認知（高群vs.低群）により異なった（誠実性：r ＝ .42 vs. .64 （研究1），r ＝ .55 vs. .66 （研究2）;調和性：r ＝ .59 vs. .73 （研究2））。性格特性の望ましさの研究への示唆が議論された。

DOI： 10.2132/personality.32.3.9

CiNii Research

High Self-Deceivers Internalize Self-Presentation of Extraversion Through Biased Evaluation of Their Performance 査読有り Open Access

Ueda, S; Yamagata, S; Kiyokawa, S

JAPANESE PSYCHOLOGICAL RESEARCH 66 巻 ( 1 ) 頁： 1 - 13 2024年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Japanese Psychological Research

This study examined whether high self-deceivers form their overly positive perception of their traits through overestimating their performance of self-presentation where they need to impress others as being extraverted/introverted, exhibiting more internalization of self-presentation (IOSP) of the trait. Participants were instructed to give either an extraverted or introverted impression through an oral (Study 1, N = 39) or written (Study 2, N = 62) self-presentation. Participants reported dispositional self-deception, self-presentation efficacy, and extraversion before and after self-presentation. Independent raters provided other-reported extraversion by examining the self-presentation. Across the two studies, two-way mixed ANOVA revealed that predicted change in extraversion occurred only for participants who made extraverted self-presentation. With the change in extraversion as an index of IOSP, mediation analyses revealed indirect effects of dispositional self-deception on IOSP via self-presentation efficacy but not other-reported extraversion. These results suggested that (a) people only internalize socially desirable traits like extraversion but not introversion, (b) writing to others is sufficient to cause IOSP, and (c) high self-deceivers internalize extraverted self-presentation not through actual performance but its subjective evaluation.

DOI： 10.1111/jpr.12393

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外向性および内向性の自己呈示が呈示者の顕在的・潜在的外向性に与える影響査読有り

上田皐介, 稲垣勉, 山形伸二, 加藤弘通

パーソナリティ研究 32 巻 ( 2 ) 頁： 57 - 68 2023年7月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：日本パーソナリティ心理学会

本研究は，外向性・内向性を印象づける自己呈示の前後で呈示者の顕在的・潜在的外向性に変化が生じるか，および公的状況（隣室に他者がいて，その人に個人情報を伝えたうえで自己呈示する）と私的状況（録音のみで個人情報も明かさずに自己呈示する）でその変化の大きさが異なるかを検討した。62名の参加者を2（呈示特性：外向性・内向性）×2（状況：公的・私的）の4条件に無作為に割り当てた。顕在的・潜在的外向性のそれぞれについて，測定時点（自己呈示前・後）を個人内要因とする3要因の分散分析を行った。その結果，潜在的外向性についての測定時点の主効果のみが有意であり，自己呈示は呈示特性，状況にかかわらず潜在的外向性を高める一方，顕在的外向性には影響しないことが示された。潜在的外向性に変化が生じたメカニズムや先行研究との結果の不一致が生じた理由，特に直前の測定が顕在的外向性の変化を抑制した可能性について考察した。

DOI： 10.2132/personality.32.2.1

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事前登録研究：自己呈示の内在化に自己呈示は必要か――自己欺瞞による代替説明可能性の検討査読有り

上田皐介, 山形伸二

パーソナリティ研究 32 巻 ( 1 ) 頁： 39 - 41 2023年6月

教室における競争的環境と生徒の遂行目標の関連査読有り

赤松大輔, 山形伸二

日本心理学会大会発表論文集 87 巻 ( 0 ) 頁： 3B-063-PP - 3B-063-PP 2023年

気質の遺伝・環境相関構造の非対称性査読有り

山形伸二

日本心理学会大会発表論文集 87 巻 ( 0 ) 頁： 1C-007-PB - 1C-007-PB 2023年

Education and Subjective Well-Being: A Behavior-Genetic Test of Four Causal Hypotheses 査読有り

Yamagata, S; Shikishima, C; Ando, J

BEHAVIOR GENETICS 52 巻 ( 6 ) 頁： 402 - 402 2022年11月

関係流動性とパーソナリティの関連は遺伝か環境か

山形伸二

日本心理学会大会発表論文集 86 巻 ( 0 ) 頁： 3PM-004-PB - 3PM-004-PB 2022年

触感擬態語と色彩における感覚間協応が感情反応に及ぼす影響

馬靖怡, 溝川藍, 山形伸二

日本心理学会大会発表論文集 86 巻 ( 0 ) 頁： 3AM-021-PH - 3AM-021-PH 2022年

Genetic and Environmental Etiology of Political Sophistication in Japan: A Study of Adolescent Twins and Their Parents 査読有り

Yamagata, S

BEHAVIOR GENETICS 51 巻 ( 6 ) 頁： 758 - 758 2021年11月

Age and sex differences in the differentiation of anger expression and interpersonal contexts among Japanese adolescents 査読有り国際共著

Deno, M, Yamagata, S, Silvers, J, Tonegawa, A, Endo, T

International Journal of Emotional Education 13 巻 ( 2 ) 頁： 40 - 57 2021年11月

Age and sex differences in the differentiation of anger expression and interpersonal contexts among Japanese adolescents 査読有り

Deno, M; Yamagata, S; Silvers, JA; Tonegawa, A; Endo, T

INTERNATIONAL JOURNAL OF EMOTIONAL EDUCATION 13 巻 ( 2 ) 頁： 40 - 57 2021年11月

Etiological pathways of depressive and anxiety symptoms linked to personality traits: A genetically-informative longitudinal study 査読有り国際共著国際誌 Open Access

Takahashi, Y; Yamagata, S; Ritchie, SJ; Barker, ED; Ando, J

JOURNAL OF AFFECTIVE DISORDERS 291 巻頁： 261 - 269 2021年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Affective Disorders

Background: The comorbidity of depression and anxiety is associated with an increased risk of prolonged adverse mental health status. However, little is currently known about their genetic and environmental influences that help to explain both the comorbidity and distinctiveness. Using longitudinal twin data, the present study investigated both the overlapping and distinct relationships between depression and anxiety viewed from the perspective of Gray's Reinforcement Sensitivity Theory (RST): two personality traits of the Behavioral Inhibition and Activation Systems (BIS and BAS). Methods: A total of 422 twin pairs (298 monozygotic and 124 dizygotic pairs) participated by completing a personality questionnaire at wave 1, and mood symptoms questionnaires at wave 2. The waves were on average 2.23 years apart. Results: Multivariate Cholesky decomposition indicated that the genetic variance of the personality traits (BIS and BAS) explained all of the genetic variance in depressive and anxiety symptoms. Additionally, genetic factors related to the BIS positively explained depressive and anxiety symptoms, whereas genetic factors related to the BAS negatively explained only depressive symptoms. Limitations: Limitations include shorter time interval and the reliance on self-reported data. Conclusions: The present study provided evidence explaining the overlap and differentiation of depressive and anxiety symptoms by using data on personality traits in a longitudinal, genetically-informative design. The findings suggested the personality traits from Gray's RST model played an important role in the prediction, and clarified the description, of both depressive and anxiety symptoms.

DOI： 10.1016/j.jad.2021.05.004

Genetic and environmental architecture of conscientiousness in adolescence 査読有り国際共著国際誌 Open Access

Takahashi, Y; Zheng, AQ; Yamagata, S; Ando, J

SCIENTIFIC REPORTS 11 巻 ( 1 ) 頁： 3205 2021年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Scientific Reports

Using a genetically informative design (about 2000 twin pairs), we investigated the phenotypic and genetic and environmental architecture of a broad construct of conscientiousness (including conscientiousness per se, effortful control, self-control, and grit). These four different measures were substantially correlated; the coefficients ranged from 0.74 (0.72–0.76) to 0.79 (0.76–0.80). Univariate genetic analyses revealed that individual differences in conscientiousness measures were moderately attributable to additive genetic factors, to an extent ranging from 62 (58–65) to 64% (61–67%); we obtained no evidence that shared environmental influences were observed. Multivariate genetic analyses showed that for the four measures used to assess conscientiousness, genetic correlations were stronger than the corresponding non-shared environmental correlations, and that a latent common factor accounted for over 84% of the genetic variance. Our findings suggest that individual differences in the four measures of conscientiousness are not distinguishable at both the phenotypic and behavioural genetic levels, and that the overlap was substantially attributable to genetic factors.

DOI： 10.1038/s41598-021-82781-5

Phenotypic and aetiological architecture of depressive symptoms in a Japanese twin sample 査読有り国際共著国際誌 Open Access

Takahashi, Y; Pingault, JB; Yamagata, S; Ando, J

PSYCHOLOGICAL MEDICINE 50 巻 ( 8 ) 頁： 1381 - 1389 2020年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Psychological Medicine

The phenotypic and aetiological architecture of depression symptomatology has been mostly studied in Western samples. In this study, we conducted a genetically informed factor analysis to elucidate both the phenotypic and aetiological architectures of self-reported depression among a Japanese adult twin sample.Methods Depressive symptoms assessed by Zung's Self-rating Depression Scale were self-rated by 425 twin pairs (301 monozygotic and 124 dizygotic twin pairs) in a community sample in Japan.Results An exploratory factor analysis extracted three symptom domains representing cognitive, affective and somatic symptomatology. A confirmatory factor analysis demonstrated that a bi-factor solution fitted better than the alternative solutions, implying that depression may be defined as a combination of a single general construct and three factors specific to each of the three symptom domains. A multivariate genetic analysis with the bi-factor solution showed that the general factor was substantially heritable (47%), and that only the affective symptom domain was significantly heritable (29%) among the three specific factors, their remaining variance being explained by non-shared environmental influences.Conclusions Depression symptomatology appears to be adequately captured by a substantially heritable general factor. The heritability of this factor (47%) in a Japanese adult sample is in line with commonly reported heritability estimates for depression. The three specific factors - cognitive, affective and somatic - are mostly explained by non-shared environmental factors, which include measurement error. The extent to which these specific factors are uniquely associated with correlates of depression when the general factor is accounted for should be investigated in future studies.

DOI： 10.1017/S0033291719001326

MODERATING EFFECTS OF RELIGIOSITY IN THE GENETIC AND ENVIRONMENTAL ETIOLOGY OF THE BIG FIVE PERSONALITY TRAITS IN ADULTHOOD 査読有り国際誌 Open Access

Yamagata, S; Takahashi, Y

PSYCHOLOGIA 62 巻 ( 1 ) 頁： 77 - 89 2020年

担当区分：筆頭著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Psychologia

This study examined whether religiosity moderates the genetic and environmental etiology of the Big Five personality traits (Neuroticism, Extraversion, Openness to Experience, Agreeableness, and Conscientiousness). Data from a nationwide sample of 549 twin pairs collected through the MacArthur Foundation National Survey of Midlife Development in the United States were analyzed. Analyses of a gene-environment interaction model revealed that religiosity moderated the magnitude of genetic and environmental influences on Agreeableness and Conscientiousness; for those who were religious, environmental influences on Agreeableness and genetic influences on Conscientiousness were greater. Religiosity exhibited weak main effects on both traits, with higher religiosity contributing to higher levels of both traits. These results suggested that religiosity serves as a psychological immune system that restricts individuals' levels of Agreeableness and Conscientiousness within a religiously appropriate range, insulating them from internal and external forces. Implications for personality theory and molecular genetic research on personality and psychopathology are discussed.

DOI： 10.2117/psysoc.2020-B006

Psychosocial Twin Cohort Studies in Japan: The Keio Twin Research Center (KoTReC) 査読有り国際誌 Open Access

Ando, J; Fujisawa, KK; Hiraishi, K; Shikishima, C; Kawamoto, T; Nozaki, M; Yamagata, S; Takahashi, Y; Suzuki, K; Someya, Y; Ozaki, K; Deno, M; Tanaka, M; Sasaki, S; Toda, T; Kobayashi, K; Sakagami, M; Okada, M; Kijima, N; Takizawa, R; Murayama, K

TWIN RESEARCH AND HUMAN GENETICS 22 巻 ( 6 ) 頁： 591 - 596 2019年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Twin Research and Human Genetics

The Keio Twin Research Center (KoTReC) was established in 2009 at Keio University to combine two longitudinal cohort projects - the Keio Twin Study (KTS) for adolescence and adulthood and the Tokyo Twin Cohort Project (ToTCoP) for infancy and childhood. KoTReC also conducted a two-time panel study of self-control and psychopathology in twin adolescence in 2012 and 2013 and three independent anonymous cross-sectional twin surveys (ToTcross) before 2012 - the ToTCross, the Junior and Senior High School Survey and the High School Survey. This article introduces the recent research designs of KoTReC and its publications.

DOI： 10.1017/thg.2019.109

No nonshared environmental correlation between selectivity of old schools and income in adulthood: selectivity of school matters, but not causally 査読有り

Yamagata Shinji, Nakamuro Makiko, Inui Tomohiko, Hiromatsu Takeshi

BEHAVIOR GENETICS 49 巻 ( 6 ) 頁： 497 - 497 2019年11月

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