Fumiaki Hamagami
Biographic Data
| ID | 5759301 |
|---|---|
| NAME | Fumiaki Hamagami |
| GIVEN NAMES | Fumiaki |
| FAMILY NAME | Hamagami |
| SIGNATURE | HAMAGAMI F |
| AFFILIATIONS | University of Hawaiʻi at Mānoa |
| VERIFIED | No |
| TOTAL WORKS | 13 |
| TOTAL CITATIONS | 78 |
| AUTHOR COUNT | 13 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2001 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 3 |
Psychometric testing of the Brief Coping Orientation to Problems Experienced Inventory among diverse women from a rural community in Hawai‘i
The Brief COPE (Coping Orientation to Problems Experienced) Inventory is a standardized and widely used scale that enables researchers to measure coping responses of persons in relation to stressors. The psychometric properties of this scale, however, have not been assessed for communities in Hawai'i. This study investigated the psychometric properties of the Brief COPE for diverse women from a rural community on the island of O'ahu in Hawai'i. T…
A psychometric validation of contextual cognitive behavioral therapy-informed measures with racially and ethnically diverse adults
Estimating Age-Based Developmental Trajectories Using Latent Change Score Models Based on Measurement Occasion
Accelerated longitudinal designs (ALDs) are designs in which participants from different cohorts provide repeated measures covering a fraction of the time range of the study. ALDs allow researchers to study developmental processes spanning long periods within a relatively shorter time framework. The common trajectory is studied by aggregating the information provided by the different cohorts. Latent change score (LCS) models provide a powerful an…
A Resilience Model of Adult Native Hawaiian Health Utilizing a Newly Multi-Dimensional Scale
Resilience has conventionally focused on an individual's ability to overcome adversity. Recent research expands on this definition, making resilience a multi-dimensional construct. Native Hawaiians experience health disparities compared to the general population of Hawai'i. Despite the pressing need to address health disparities, minimal research examines resilience factors that serve as buffers for adverse experiences of Native Hawaiians. The pu…
Multilevel Factor Analyses of Family Data From the Hawai’i Family Study of Cognition
In this study, we reanalyzed the classic Hawai’i Family Study of Cognition (HFSC) data using contemporary multilevel modeling techniques. We used the HFSC baseline data ( N = 6,579) and reexamined the factorial structure of 16 cognitive variables using confirmatory (restricted) measurement models in an explicit sequence. These models were initially fitted using multilevel confirmatory factor analysis techniques and the invariant six-factor models…
Modeling Nonlinear Change via Latent Change and Latent Acceleration Frameworks: Examining Velocity and Acceleration of Growth Trajectories
We propose the use of the latent change and latent acceleration frameworks for modeling nonlinear growth in structural equation models. Moving to these frameworks allows for the direct identification of rates of change and acceleration in latent growth curves-information available indirectly through traditional growth curve models when change patterns are nonlinear with respect to time. To illustrate this approach, exponential growth models in th…
Potential causal relationship between depressive symptoms and academic achievement in the Hawaiian high schools health survey using contemporary longitudinal latent variable change models
There is a relatively consistent negative relationship between adolescent depressive symptoms and educational achievement (e.g., grade point average [GPA]). However, the causal direction for this association is less certain due to the lack of longitudinal data with both indicators measured across at least 2 time periods and due to the lack of application of more sophisticated contemporary statistical techniques. We present multivariate results fr…
Nonlinear Growth Curves in Developmental Research
Developmentalists are often interested in understanding change processes, and growth models are the most common analytic tool for examining such processes. Nonlinear growth curves are especially valuable to developmentalists because the defining characteristics of the growth process such as initial levels, rates of change during growth spurts, and asymptotic levels can be estimated. A variety of growth models are described beginning with the line…
Social Ecological Determinants of Youth Violence Among Ethnically Diverse Asian and Pacific Islander Students
Genetic variance in processing speed drives variation in aging of spatial and memory abilities
Previous analyses have identified a genetic contribution to the correlation between declines with age in processing speed and higher cognitive abilities. The goal of the current analysis was to apply the biometric dual change score model to consider the possibility of temporal dynamics underlying the genetic covariance between aging trajectories for processing speed and cognitive abilities. Longitudinal twin data from the Swedish Adoption/Twin St…
The Dynamic Interdependence of Developmental Domains Across Emerging Adulthood
Comparative longitudinal structural analyses of the growth and decline of multiple intellectual abilities over the life span
Latent growth curve techniques and longitudinal data are used to examine predictions from the theory of fluid and crystallized intelligence (Gf-Gc theory; J. L. Horn & R. B. Cattell, 1966, 1967). The data examined are from a sample (N approximately 1,200) measured on the Woodcock-Johnson Psycho-Educational Battery-Revised (WJ-R). The longitudinal structural equation models used are based on latent growth models of age using two-occasion "accelera…
Latent difference score structural models for linear dynamic analyses with incomplete longitudinal data.
Comparative longitudinal structural analyses of the growth and decline of multiple intellectual abilities over the life span
Latent growth curve techniques and longitudinal data are used to examine predictions from the theory of fluid and crystallized intelligence (Gf-Gc theory; J. L. Horn & R. B. Cattell, 1966, 1967). The data examined are from a sample (N approximately 1,200) measured on the Woodcock-Johnson Psycho-Educational Battery-Revised (WJ-R). The longitudinal structural equation models used are based on latent growth models of age using two-occasion "accelera…
Potential causal relationship between depressive symptoms and academic achievement in the Hawaiian high schools health survey using contemporary longitudinal latent variable change models
There is a relatively consistent negative relationship between adolescent depressive symptoms and educational achievement (e.g., grade point average [GPA]). However, the causal direction for this association is less certain due to the lack of longitudinal data with both indicators measured across at least 2 time periods and due to the lack of application of more sophisticated contemporary statistical techniques. We present multivariate results fr…
Genetic variance in processing speed drives variation in aging of spatial and memory abilities
Previous analyses have identified a genetic contribution to the correlation between declines with age in processing speed and higher cognitive abilities. The goal of the current analysis was to apply the biometric dual change score model to consider the possibility of temporal dynamics underlying the genetic covariance between aging trajectories for processing speed and cognitive abilities. Longitudinal twin data from the Swedish Adoption/Twin St…
The Dynamic Interdependence of Developmental Domains Across Emerging Adulthood
Latent difference score structural models for linear dynamic analyses with incomplete longitudinal data.
Comparative longitudinal structural analyses of the growth and decline of multiple intellectual abilities over the life span
Latent growth curve techniques and longitudinal data are used to examine predictions from the theory of fluid and crystallized intelligence (Gf-Gc theory; J. L. Horn & R. B. Cattell, 1966, 1967). The data examined are from a sample (N approximately 1,200) measured on the Woodcock-Johnson Psycho-Educational Battery-Revised (WJ-R). The longitudinal structural equation models used are based on latent growth models of age using two-occasion "accelera…
The Dynamic Interdependence of Developmental Domains Across Emerging Adulthood
Genetic variance in processing speed drives variation in aging of spatial and memory abilities
Previous analyses have identified a genetic contribution to the correlation between declines with age in processing speed and higher cognitive abilities. The goal of the current analysis was to apply the biometric dual change score model to consider the possibility of temporal dynamics underlying the genetic covariance between aging trajectories for processing speed and cognitive abilities. Longitudinal twin data from the Swedish Adoption/Twin St…
Social Ecological Determinants of Youth Violence Among Ethnically Diverse Asian and Pacific Islander Students
Nonlinear Growth Curves in Developmental Research
Developmentalists are often interested in understanding change processes, and growth models are the most common analytic tool for examining such processes. Nonlinear growth curves are especially valuable to developmentalists because the defining characteristics of the growth process such as initial levels, rates of change during growth spurts, and asymptotic levels can be estimated. A variety of growth models are described beginning with the line…
Potential causal relationship between depressive symptoms and academic achievement in the Hawaiian high schools health survey using contemporary longitudinal latent variable change models
There is a relatively consistent negative relationship between adolescent depressive symptoms and educational achievement (e.g., grade point average [GPA]). However, the causal direction for this association is less certain due to the lack of longitudinal data with both indicators measured across at least 2 time periods and due to the lack of application of more sophisticated contemporary statistical techniques. We present multivariate results fr…
Modeling Nonlinear Change via Latent Change and Latent Acceleration Frameworks: Examining Velocity and Acceleration of Growth Trajectories
We propose the use of the latent change and latent acceleration frameworks for modeling nonlinear growth in structural equation models. Moving to these frameworks allows for the direct identification of rates of change and acceleration in latent growth curves-information available indirectly through traditional growth curve models when change patterns are nonlinear with respect to time. To illustrate this approach, exponential growth models in th…
Multilevel Factor Analyses of Family Data From the Hawai’i Family Study of Cognition
In this study, we reanalyzed the classic Hawai’i Family Study of Cognition (HFSC) data using contemporary multilevel modeling techniques. We used the HFSC baseline data ( N = 6,579) and reexamined the factorial structure of 16 cognitive variables using confirmatory (restricted) measurement models in an explicit sequence. These models were initially fitted using multilevel confirmatory factor analysis techniques and the invariant six-factor models…
Estimating Age-Based Developmental Trajectories Using Latent Change Score Models Based on Measurement Occasion
Accelerated longitudinal designs (ALDs) are designs in which participants from different cohorts provide repeated measures covering a fraction of the time range of the study. ALDs allow researchers to study developmental processes spanning long periods within a relatively shorter time framework. The common trajectory is studied by aggregating the information provided by the different cohorts. Latent change score (LCS) models provide a powerful an…
A Resilience Model of Adult Native Hawaiian Health Utilizing a Newly Multi-Dimensional Scale
Resilience has conventionally focused on an individual's ability to overcome adversity. Recent research expands on this definition, making resilience a multi-dimensional construct. Native Hawaiians experience health disparities compared to the general population of Hawai'i. Despite the pressing need to address health disparities, minimal research examines resilience factors that serve as buffers for adverse experiences of Native Hawaiians. The pu…
A psychometric validation of contextual cognitive behavioral therapy-informed measures with racially and ethnically diverse adults
Psychometric testing of the Brief Coping Orientation to Problems Experienced Inventory among diverse women from a rural community in Hawai‘i
The Brief COPE (Coping Orientation to Problems Experienced) Inventory is a standardized and widely used scale that enables researchers to measure coping responses of persons in relation to stressors. The psychometric properties of this scale, however, have not been assessed for communities in Hawai'i. This study investigated the psychometric properties of the Brief COPE for diverse women from a rural community on the island of O'ahu in Hawai'i. T…
Psychology (10 works) · Developmental psychology (8 works) · Mathematics (7 works) · Structural equation modeling (7 works) · Statistics (6 works) · Cognitive Abilities and Testing (5 works) · Computer Science (5 works) · Econometrics (5 works) · Medicine (5 works) · Child and Adolescent Psychosocial and Emotional Development (4 works)