Kazumi Sugimura
Biographic Data
| ID | 643071 |
|---|---|
| NAME | Kazumi Sugimura |
| GIVEN NAMES | Kazumi |
| FAMILY NAME | Sugimura |
| SIGNATURE | SUGIMURA K |
| AFFILIATIONS | Hiroshima University |
| ORCID | 0000-0002-5668-6094 |
| VERIFIED | Yes |
| TOTAL WORKS | 40 |
| TOTAL CITATIONS | 72 |
| AUTHOR COUNT | 40 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2001 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 5 |
Validating the Narrative Identity Self-Evaluation Scale in Japan
This study validated the Narrative Identity Self-Evaluation (NISE) scale among Japanese adults through two interconnected studies. In Study 1, a total of 1,500 Japanese adults (aged 18–60 years) completed the NISE alongside measures of subjective well-being and self-concept clarity. Confirmatory factor analysis supported the NISE’s four-factor structure – autobiographical reasoning, desire for structure, positive themes, and narrative disturbance…
The Big Five, Life Satisfaction, and Job Identity Development
INTRODUCTION: The school-to-work transition presents a crucial period in young adults' identity development, during which the formation of a job identity becomes a key developmental task. However, job identity development during this transition and the individual traits that predict it remain unexplored. This study aimed to examine job identity development among Japanese youth during their first year of employment and investigate whether the Big …
The Relationships Between Personal Identity, National Identity, and Well‐Being
INTRODUCTION: Personal and national identities can play a pivotal role in understanding youth well-being in increasingly diverse societies. However, previous research has predominantly focused on Western contexts, overlooking youth from non-Western societies. Furthermore, there is a scarcity of research that simultaneously examined both personal and national identities in relation to well-being. To address this gap, this study focused on youth be…
Master Narratives Among Youth with Hikikomori in the Japanese Sociocultural Context
The Interplay Between Personal Identity and Social Identity Among Vocational High School Students
Although identity research has predominantly focused on college-bound adolescents, it has largely neglected vocational high school students who enter the job market immediately after graduation. Furthermore, most studies have concentrated on personal identity and have overlooked the concurrent development of social identity. This study examined the relationship between adolescents’ personal and social identities over three years of vocational hig…
Relationship between Personality Traits and Subjective Well-Being in Emerging Adulthood
Does Employment Status Matter for Emerging Adult Identity Development and Life Satisfaction? A Two-wave Longitudinal Study
Late emerging adulthood is pivotal for identity exploration and development and is interrelated with life satisfaction. In the development of identity and life satisfaction, it is important to have a stable employment status that supports the foundation of life. However, the interrelationships among identity, life satisfaction, and employment status in late emerging adulthood are unclear. Using a two-wave longitudinal survey, this study examined …
Identity formation with gender differences in University students
Parental Identity Processes Across Cultures
The goal of the present study was to assess the similarities and differences between parents from different cultures in terms of the intensity of parental identity processes described in the three-dimensional model of identity formation. The cultural measurement invariance of the questionnaire used, the Utrecht-Management of Identity Commitments Scale-Parental Identity (U-MICS-PI), was also assessed. Participants were 2340 parents (51.4% of mothe…
I was, I am, I will be
The ways in which youth reach a stable identity, a core developmental task of emerging adulthood, are intertwined with their perceptions of the past, present, and future. Additionally, these dynamics are embedded in and are strongly influenced by the socio-historical context and concurrent events, such as COVID-19. This study examines how different groups of emerging adults (university students and workers) engage in identity processes in educati…
Adolescents’ Identity Development Predicts the Transition and the Adjustment to Tertiary Education or Work
Profiles of Emotional Separation and Parental Trust from Adolescence to Emerging Adulthood
Youth become psychologically independent by emotionally separating from their parents and simultaneously developing a sense of trust in them. While these relational components have been addressed separately, studies focusing on the change in dynamics of these components are lacking. This study examined profiles of parent–youth relationship quality based on emotional separation and parental trust, age differences in the prevalence of these profile…
Patterns of Personality Development and Psychosocial Functioning in Japanese Adolescents
Direction of associations between personality traits and educational identity processes
INTRODUCTION: In adolescence, personality traits and educational identity processes are interwoven. Previous studies have shown that personality traits predict healthy identity commitment and exploration in education. However, the direction of associations between personality traits and an identity process that searches for another identity option (i.e., reconsideration of commitment) is unclear. Furthermore, there is a lack of prospective studie…
Identity Formation and School Experience among University Students in A Teacher Training Program
Students’ identity formation is intertwined with school experience. Despite the importance of career-related school experience and school events for their identity, few studies have focused on students in vocational education. To address this gap, this study examined bidirectional effects between identity formation and school experience (teacher skills reconsideration and teacher career reconsideration) among teacher training students focusing on…
Exploring Exploration
In this short-term longitudinal study, we examine specific examples of identity exploration in real-time interactions among peers. The participants included 12 first-year students majoring in literature, social sciences, and humanities at a national university in Japan (Mage = 18.2; SD = 0.39; 83.3% female). They were divided into four triads that participated in weekly 20-minute discussions for nine successive weeks around three identity domains…
Real-Time Identity Processes
Diverse Trajectories of Hikikomori Symptoms During Job Search and the Role of Identity Distress
Objective Hikikomori, a prolonged form of social withdrawal, has received attention in various research areas. This longitudinal study aimed to identify diverse trajectories of hikikomori symptoms among young Japanese adults engaged in a job search. It also tested whether identity distress, a critical developmental issue, predicts these trajectories while controlling for other risk factors (depressive symptoms, life satisfaction, career expectati…
Daily Identity Processes and Emotions in Young Adulthood
Trajectories in sense of identity and relationship with life satisfaction during adolescence and young adulthood
Previous research on identity development among adolescents has focused on the processes involved. However, it is unclear how the sense of identity (synthesis and confusion) develops and how it relates to life satisfaction. This study aims to examine the relationship between sense of identity and life satisfaction among Japanese youth living in the urban Kanto, Kansai, and Chubu areas. A total of 5,047 Japanese youth (49.7% female; Time 1 M age =…
Real-time Identity Processes
Identity processes and identity content valences
Developing identities that are well-aligned with sociocultural expectations is a key psychosocial developmental task for adolescents and emerging adults. Most studies have examined identity development focusing on how individuals develop their identities (identity process), such as identity exploration and commitment. Meanwhile, researchers have emphasized incorporating the what of identity development (identity content) with identity processes t…
Emotional separation, parental trust, and psychosocial adjustment in preadolescence and early adolescence
INTRODUCTION: Emotional separation and parental trust are two fundamental components of parent-adolescent relationships across different cultural contexts. Previous research showed that emotional separation hindered adolescents' psychosocial adjustment, while parental trust benefited it. However, research on preadolescence is lacking. Preadolescence is a crucial period, as theories and findings suggest that too early autonomy around puberty had n…
Diverse-and-Dynamic Pathways in Educational and Interpersonal Identity Formation during Adolescence
This study aimed to examine the relations between educational and interpersonal identity trajectories and psychosocial functioning based on a three-factor identity process model. A total of 968 Japanese adolescents including 13- and 16-years-olds (49.7% female) participated in a four-wave longitudinal study. Latent class growth analysis extracted five identity trajectories in each educational and interpersonal identity domain and revealed (a) hig…
Relationships Between Demographic Factors and Trajectories of Identity Distress in Various Life Domains Among Young Adults
Youth develop identities in various life domains by resolving identity-related subjective distress (i.e., identity distress) as well as engaging in identity processes (e.g., exploration and commitment). Despite this proposition, previous studies have relatively neglected identity distress in different domains. Moreover, previous research on identity distress in various domains has used cross-sectional data with Western samples. To obtain a deeper…
Trajectories in sense of identity and relationship with life satisfaction during adolescence and young adulthood
Previous research on identity development among adolescents has focused on the processes involved. However, it is unclear how the sense of identity (synthesis and confusion) develops and how it relates to life satisfaction. This study aims to examine the relationship between sense of identity and life satisfaction among Japanese youth living in the urban Kanto, Kansai, and Chubu areas. A total of 5,047 Japanese youth (49.7% female; Time 1 M age =…
Is adolescence a period of identity formation for all youth? Insights from a four-wave longitudinal study of identity dynamics in Japan
In the present study, we examined changes in identity dynamics during adolescence using the Dimensions of Identity Development Scale (DIDS), focusing on social and cultural factors possibly affecting identity formation. Identity formation among adolescents outside Western countries is largely unexplored; therefore, we focused on adolescents in Japan. We conducted a longitudinal study with 4 annual measurement points examining 968 Japanese adolesc…
A Cross-Cultural Perspective on the Relationships between Emotional Separation, Parental Trust, and Identity in Adolescents
Longitudinal Links Between Identity Consolidation and Psychosocial Problems in Adolescence
Objective and subjective markers of transition to adulthood in emerging adults
The purpose of this study was to investigate the direct and indirect (via objective and subjective markers of adulthood) relations of parental trust and emerging adults' life satisfaction in samples of Lithuanian ( N = 399, ages 18-25) and Japanese ( N = 585, ages 18-25) emerging adults. Results revealed that parental trust was associated with emerging adults' life satisfaction both directly and indirectly via subjective markers of adulthood (i.e…
Adolescents’ Identity Development Predicts the Transition and the Adjustment to Tertiary Education or Work
Do Identity Processes and Psychosocial Problems Intertwine with Each Other? Testing the Directionality of Between- and Within-Person Associations
Cultural self-construction and identity formation in emerging adulthood
Cultural pathways of identity formation have been largely unexplored. In many Asian cultures, youth are expected to concentrate on adaptation to their groups or relationships rather than pursuing their own uniqueness. Then, how do they develop a sense of identity while considering groups or relationships to be important? The purposes of this study were (a) to examine relationships between cultural self-construction (i.e. independence and interdep…
The Interplay Between Personal Identity and Social Identity Among Vocational High School Students
Although identity research has predominantly focused on college-bound adolescents, it has largely neglected vocational high school students who enter the job market immediately after graduation. Furthermore, most studies have concentrated on personal identity and have overlooked the concurrent development of social identity. This study examined the relationship between adolescents’ personal and social identities over three years of vocational hig…
Identity processes and identity content valences
Developing identities that are well-aligned with sociocultural expectations is a key psychosocial developmental task for adolescents and emerging adults. Most studies have examined identity development focusing on how individuals develop their identities (identity process), such as identity exploration and commitment. Meanwhile, researchers have emphasized incorporating the what of identity development (identity content) with identity processes t…
I was, I am, I will be
The ways in which youth reach a stable identity, a core developmental task of emerging adulthood, are intertwined with their perceptions of the past, present, and future. Additionally, these dynamics are embedded in and are strongly influenced by the socio-historical context and concurrent events, such as COVID-19. This study examines how different groups of emerging adults (university students and workers) engage in identity processes in educati…
A Culturally Sensitive Approach to the Relationships between Identity Formation and Religious Beliefs in Youth
Which came first, personality traits or identity processes during early and middle adolescence
Does Employment Status Matter for Emerging Adult Identity Development and Life Satisfaction? A Two-wave Longitudinal Study
Late emerging adulthood is pivotal for identity exploration and development and is interrelated with life satisfaction. In the development of identity and life satisfaction, it is important to have a stable employment status that supports the foundation of life. However, the interrelationships among identity, life satisfaction, and employment status in late emerging adulthood are unclear. Using a two-wave longitudinal survey, this study examined …
Profiles of Emotional Separation and Parental Trust from Adolescence to Emerging Adulthood
Youth become psychologically independent by emotionally separating from their parents and simultaneously developing a sense of trust in them. While these relational components have been addressed separately, studies focusing on the change in dynamics of these components are lacking. This study examined profiles of parent–youth relationship quality based on emotional separation and parental trust, age differences in the prevalence of these profile…
Daily Identity Processes and Emotions in Young Adulthood
A Preliminary Study of Proposed Levels of Relatedness in Identity Exploration among Female Late Adolescents in Japan
This study examined features of identity exploration among late adolescent Japanese girls from the viewpoint of relatedness. The expanded Ego Identity Interview was administered to 33 female university students. Five levels of relatedness were formulated in a sequence from exploration without relatedness to exploration with disagreements between one's own and others' perspectives. The results support the current view of researchers emphasizing re…
The Role of Peers as Agents of Identity Formation in Japanese First-Year University Students
This study demonstrated that peers can act as agents of late adolescent identity formation. A short-term longitudinal study was used to examine identity formation in Japanese first-year university students (n = 170), specifically focusing on identity exploration in the learning sphere among students during their transition to a university. The study examined characteristics of adolescent peer agents and described how they facilitate identity expl…
Personal identity in Japan
This chapter explores characteristics of identity formation among Japanese adolescents and young adults living in a cultural context where individualism has been increasingly emphasized even while maintaining collectivism. We argue that, to develop a sense of identity in Japanese culture, adolescents and young adults carefully consider others' perspectives, resolve conflicts between self and others, and, in some cases, merge themselves into relat…
The new life stage of emerging adulthood at ages 18–29 years
Perceptions of Emerging Adulthood
In this study, we sought to compare perceptions of emerging adulthood of Italian and Japanese youth and we examined, within each national sample, gender and occupational status (students vs. workers) differences on these perceptions. Participants were 2,472 emerging adults (1,513 Italian and 959 Japanese) of age 18–30 (50.8% females; 57.1% university students and 42.9% workers). Findings indicated measurement invariance of the Inventory of Dimens…
Cultural self-construction and identity formation in emerging adulthood
Cultural pathways of identity formation have been largely unexplored. In many Asian cultures, youth are expected to concentrate on adaptation to their groups or relationships rather than pursuing their own uniqueness. Then, how do they develop a sense of identity while considering groups or relationships to be important? The purposes of this study were (a) to examine relationships between cultural self-construction (i.e. independence and interdep…
Which came first, personality traits or identity processes during early and middle adolescence
Is adolescence a period of identity formation for all youth? Insights from a four-wave longitudinal study of identity dynamics in Japan
In the present study, we examined changes in identity dynamics during adolescence using the Dimensions of Identity Development Scale (DIDS), focusing on social and cultural factors possibly affecting identity formation. Identity formation among adolescents outside Western countries is largely unexplored; therefore, we focused on adolescents in Japan. We conducted a longitudinal study with 4 annual measurement points examining 968 Japanese adolesc…
Forming a Negative Identity in Contemporary Society
Negative identity is an identity that is formed by identifying with roles opposed to societal expectations. This topic has been neglected in prior research, which only focused more consistently on positive identity. This article aims to discuss (1) the importance of the concept of negative identity in contemporary society, (2) the frameworks for empirical research on negative identity formation, and (3) the clinical interventions for youth with a…
A Cross-Cultural Perspective on the Relationships between Emotional Separation, Parental Trust, and Identity in Adolescents
Longitudinal Links Between Identity Consolidation and Psychosocial Problems in Adolescence
Roles of Configurations of Multiple Identity Domains in Adaptive and Maladaptive Functioning in Japanese Emerging Adults
This study aimed to investigate the associations between Japanese emerging adults’ identity configuration patterns across educational and interpersonal domains and various indices of adaptive (i.e., social trust and prosocial behaviors) and maladaptive functioning (i.e., internalizing, externalizing, and hikikomori symptoms). A total of 2,313 Japanese emerging adults completed the questionnaires. Based on the identity statuses assignments in the …
A Culturally Sensitive Approach to the Relationships between Identity Formation and Religious Beliefs in Youth
Emotional separation, parental trust, and psychosocial adjustment in preadolescence and early adolescence
INTRODUCTION: Emotional separation and parental trust are two fundamental components of parent-adolescent relationships across different cultural contexts. Previous research showed that emotional separation hindered adolescents' psychosocial adjustment, while parental trust benefited it. However, research on preadolescence is lacking. Preadolescence is a crucial period, as theories and findings suggest that too early autonomy around puberty had n…
Diverse-and-Dynamic Pathways in Educational and Interpersonal Identity Formation during Adolescence
This study aimed to examine the relations between educational and interpersonal identity trajectories and psychosocial functioning based on a three-factor identity process model. A total of 968 Japanese adolescents including 13- and 16-years-olds (49.7% female) participated in a four-wave longitudinal study. Latent class growth analysis extracted five identity trajectories in each educational and interpersonal identity domain and revealed (a) hig…
Relationships Between Demographic Factors and Trajectories of Identity Distress in Various Life Domains Among Young Adults
Youth develop identities in various life domains by resolving identity-related subjective distress (i.e., identity distress) as well as engaging in identity processes (e.g., exploration and commitment). Despite this proposition, previous studies have relatively neglected identity distress in different domains. Moreover, previous research on identity distress in various domains has used cross-sectional data with Western samples. To obtain a deeper…
Do Identity Processes and Psychosocial Problems Intertwine with Each Other? Testing the Directionality of Between- and Within-Person Associations
Objective and subjective markers of transition to adulthood in emerging adults
The purpose of this study was to investigate the direct and indirect (via objective and subjective markers of adulthood) relations of parental trust and emerging adults' life satisfaction in samples of Lithuanian ( N = 399, ages 18-25) and Japanese ( N = 585, ages 18-25) emerging adults. Results revealed that parental trust was associated with emerging adults' life satisfaction both directly and indirectly via subjective markers of adulthood (i.e…
Real-time Identity Processes
Identity processes and identity content valences
Developing identities that are well-aligned with sociocultural expectations is a key psychosocial developmental task for adolescents and emerging adults. Most studies have examined identity development focusing on how individuals develop their identities (identity process), such as identity exploration and commitment. Meanwhile, researchers have emphasized incorporating the what of identity development (identity content) with identity processes t…
Direction of associations between personality traits and educational identity processes
INTRODUCTION: In adolescence, personality traits and educational identity processes are interwoven. Previous studies have shown that personality traits predict healthy identity commitment and exploration in education. However, the direction of associations between personality traits and an identity process that searches for another identity option (i.e., reconsideration of commitment) is unclear. Furthermore, there is a lack of prospective studie…
Identity Formation and School Experience among University Students in A Teacher Training Program
Students’ identity formation is intertwined with school experience. Despite the importance of career-related school experience and school events for their identity, few studies have focused on students in vocational education. To address this gap, this study examined bidirectional effects between identity formation and school experience (teacher skills reconsideration and teacher career reconsideration) among teacher training students focusing on…
Exploring Exploration
In this short-term longitudinal study, we examine specific examples of identity exploration in real-time interactions among peers. The participants included 12 first-year students majoring in literature, social sciences, and humanities at a national university in Japan (Mage = 18.2; SD = 0.39; 83.3% female). They were divided into four triads that participated in weekly 20-minute discussions for nine successive weeks around three identity domains…
Real-Time Identity Processes
Diverse Trajectories of Hikikomori Symptoms During Job Search and the Role of Identity Distress
Objective Hikikomori, a prolonged form of social withdrawal, has received attention in various research areas. This longitudinal study aimed to identify diverse trajectories of hikikomori symptoms among young Japanese adults engaged in a job search. It also tested whether identity distress, a critical developmental issue, predicts these trajectories while controlling for other risk factors (depressive symptoms, life satisfaction, career expectati…
Psychology (37 works) · Identity, Memory, and Therapy (34 works) · Social Psychology (30 works) · Developmental psychology (28 works) · Social Psychology (20 works) · Identity (music (18 works) · Family Support in Illness (15 works) · Identity formation (15 works) · Self-concept (15 works) · Youth Education and Societal Dynamics (12 works)