Siwei Liu
Biographic Data
| ID | 5761448 |
|---|---|
| NAME | Siwei Liu |
| GIVEN NAMES | Siwei |
| FAMILY NAME | Liu |
| SIGNATURE | LIU S |
| AFFILIATIONS | University of California, Davis |
| ORCID | 0000-0002-2972-426X |
| VERIFIED | Yes |
| TOTAL WORKS | 12 |
| TOTAL CITATIONS | 4 |
| WORKS AS AUTHOR | 12 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2013 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 2 |
Dynamic Fit Index Cutoffs for Time Series Network Models
In this study, we extend the dynamic fit index (DFI) developed by McNeish and Wolf to the context of time series analysis. DFI is a simulation-based method for deriving fit index cutoff values tailored to the specific model and data characteristics. Through simulations, we show that DFI cutoffs for detecting an omitted path in time series network models tend to be closer to exact fit than the popular benchmark values developed by Hu and Bentler. …
Improving Subgrouping Accuracy in Dynamic Network Models Through Feature Selection
Dynamic psychological processes often vary across individuals. Identifying subgroups of individuals with differential person-specific dynamics is of great interest in health and behavioral science
Homogeneity Assumptions in the Analysis of Dynamic Processes
With the increased use of time series data in human research, ranging from ecological momentary assessments to data passively obtained, researchers can explore dynamic processes more than ever before. An important question researchers must ask themselves is, do I think all individuals have similar processes? If not, how different, and in what ways? Dr. Peter Molenaar's work set the foundation to answer these questions by providing insight into in…
Interparental Conflict and Early Adolescent Depressive Symptoms
A notable ambiguity persists concerning whether distinct forms of parent-child triangulation (unstable coercive coalition, stable coalition, detouring-attacking, detouring supportive, parentification) might mediate the association between interparental conflict and early adolescent depressive symptoms similarly within the context of Chinese Confucianism. Filling this research gap, this study aimed to examine the mediating role of the five dimensi…
Dynamic Mixture Modeling with dynr
). We illustrate the specification and estimation of dynamic mixture model using "dynr," an R package capable of handling a broad class of linear and nonlinear discrete- and continuous-time models with regime-switching properties
Use of Composites in Analysis of Individual Time Series
Psychology has seen an increase in the study of intra-individual processes through time series. Although timely and relevant, modeling variance from unique sources in time series may lead to model non-convergence, making it tempting to reduce the number of parameters in the model. The purpose of this paper was to investigate use of composite scores in analysis of individual time series. To meet this goal, we compared the dynamic factor analysis (…
Parasympathetic activity, emotion socialization, and internalizing and externalizing problems in children
Biopsychosocial models of children's socioemotional development highlight the joint influences of physiological regulation and parenting practices. Both high and low levels of children's baseline respiratory sinus arrhythmia (RSA) have been associated with children's maladjustment, indicative of nonlinear associations. Negative or unsupportive parental responses to children's emotions are consistently linked with internalizing (IP) and externaliz…
Advancing Research and Measurement on Fathering and Children’s Development
Fathers are more than social accidents. Research has demonstrated that fathers matter to children’s development. Despite noted progress, challenges remain on how best to conceptualize and assess fathering and father–child relationships. The current monograph is the result of an SRCD-sponsored meeting of fatherhood scholars brought together to discuss these challenges and make recommendations for best practices for incorporating fathers in studies…
Interactive effects of early-life income harshness and unpredictability on children’s socioemotional and academic functioning in kindergarten and adolescence
This research investigates whether and how two fundamental environmental factors-harshness and unpredictability-interact in regulating child and adolescent development, informed by life-history theory and drawing on data from the National Institute of Child Health & Human Development Study of Early Child Care and Youth Development ( N = 1,364). Early life harshness was operationalized as the typical level of family income-to-needs based on six re…
Interpersonal Autonomic Physiology
Interpersonal autonomic physiology is defined as the relationship between people’s physiological dynamics, as indexed by continuous measures of the autonomic nervous system. Findings from this field of study indicate that physiological activity between two or more people can become associated or interdependent, often referred to as physiological synchrony. Physiological synchrony has been found in both new and established relationships across a r…
Testing for Granger Causality in the Frequency Domain
This article introduces phase resampling, an existing but rarely used surrogate data method for making statistical inferences of Granger causality in frequency domain time series analysis. Granger causality testing is essential for establishing causal relations among variables in multivariate dynamic processes. However, testing for Granger causality in the frequency domain is challenging due to the nonlinear relation between frequency domain meas…
Infants' Transitions out of a Fussing/Crying State Are Modifiable and Are Related to Weight Status
Currently, about 10% of infants have a weight for length greater than the 95th percentile for their age and sex, which puts them at risk for obesity as they grow. In a pilot obesity prevention study, primiparous mothers and their newborn infants were randomly assigned to a control group or a S oothe/ S leep intervention. Previously, it has been demonstrated that this intervention contributed to lower weight‐for‐length percentiles at 1 year; the a…
Parasympathetic activity, emotion socialization, and internalizing and externalizing problems in children
Biopsychosocial models of children's socioemotional development highlight the joint influences of physiological regulation and parenting practices. Both high and low levels of children's baseline respiratory sinus arrhythmia (RSA) have been associated with children's maladjustment, indicative of nonlinear associations. Negative or unsupportive parental responses to children's emotions are consistently linked with internalizing (IP) and externaliz…
Interactive effects of early-life income harshness and unpredictability on children’s socioemotional and academic functioning in kindergarten and adolescence
This research investigates whether and how two fundamental environmental factors-harshness and unpredictability-interact in regulating child and adolescent development, informed by life-history theory and drawing on data from the National Institute of Child Health & Human Development Study of Early Child Care and Youth Development ( N = 1,364). Early life harshness was operationalized as the typical level of family income-to-needs based on six re…
Infants' Transitions out of a Fussing/Crying State Are Modifiable and Are Related to Weight Status
Currently, about 10% of infants have a weight for length greater than the 95th percentile for their age and sex, which puts them at risk for obesity as they grow. In a pilot obesity prevention study, primiparous mothers and their newborn infants were randomly assigned to a control group or a S oothe/ S leep intervention. Previously, it has been demonstrated that this intervention contributed to lower weight‐for‐length percentiles at 1 year; the a…
Testing for Granger Causality in the Frequency Domain
This article introduces phase resampling, an existing but rarely used surrogate data method for making statistical inferences of Granger causality in frequency domain time series analysis. Granger causality testing is essential for establishing causal relations among variables in multivariate dynamic processes. However, testing for Granger causality in the frequency domain is challenging due to the nonlinear relation between frequency domain meas…
Interpersonal Autonomic Physiology
Interpersonal autonomic physiology is defined as the relationship between people’s physiological dynamics, as indexed by continuous measures of the autonomic nervous system. Findings from this field of study indicate that physiological activity between two or more people can become associated or interdependent, often referred to as physiological synchrony. Physiological synchrony has been found in both new and established relationships across a r…
Interactive effects of early-life income harshness and unpredictability on children’s socioemotional and academic functioning in kindergarten and adolescence
This research investigates whether and how two fundamental environmental factors-harshness and unpredictability-interact in regulating child and adolescent development, informed by life-history theory and drawing on data from the National Institute of Child Health & Human Development Study of Early Child Care and Youth Development ( N = 1,364). Early life harshness was operationalized as the typical level of family income-to-needs based on six re…
Advancing Research and Measurement on Fathering and Children’s Development
Fathers are more than social accidents. Research has demonstrated that fathers matter to children’s development. Despite noted progress, challenges remain on how best to conceptualize and assess fathering and father–child relationships. The current monograph is the result of an SRCD-sponsored meeting of fatherhood scholars brought together to discuss these challenges and make recommendations for best practices for incorporating fathers in studies…
Dynamic Mixture Modeling with dynr
). We illustrate the specification and estimation of dynamic mixture model using "dynr," an R package capable of handling a broad class of linear and nonlinear discrete- and continuous-time models with regime-switching properties
Use of Composites in Analysis of Individual Time Series
Psychology has seen an increase in the study of intra-individual processes through time series. Although timely and relevant, modeling variance from unique sources in time series may lead to model non-convergence, making it tempting to reduce the number of parameters in the model. The purpose of this paper was to investigate use of composite scores in analysis of individual time series. To meet this goal, we compared the dynamic factor analysis (…
Parasympathetic activity, emotion socialization, and internalizing and externalizing problems in children
Biopsychosocial models of children's socioemotional development highlight the joint influences of physiological regulation and parenting practices. Both high and low levels of children's baseline respiratory sinus arrhythmia (RSA) have been associated with children's maladjustment, indicative of nonlinear associations. Negative or unsupportive parental responses to children's emotions are consistently linked with internalizing (IP) and externaliz…
Homogeneity Assumptions in the Analysis of Dynamic Processes
With the increased use of time series data in human research, ranging from ecological momentary assessments to data passively obtained, researchers can explore dynamic processes more than ever before. An important question researchers must ask themselves is, do I think all individuals have similar processes? If not, how different, and in what ways? Dr. Peter Molenaar's work set the foundation to answer these questions by providing insight into in…
Interparental Conflict and Early Adolescent Depressive Symptoms
A notable ambiguity persists concerning whether distinct forms of parent-child triangulation (unstable coercive coalition, stable coalition, detouring-attacking, detouring supportive, parentification) might mediate the association between interparental conflict and early adolescent depressive symptoms similarly within the context of Chinese Confucianism. Filling this research gap, this study aimed to examine the mediating role of the five dimensi…
Improving Subgrouping Accuracy in Dynamic Network Models Through Feature Selection
Dynamic psychological processes often vary across individuals. Identifying subgroups of individuals with differential person-specific dynamics is of great interest in health and behavioral science
Dynamic Fit Index Cutoffs for Time Series Network Models
In this study, we extend the dynamic fit index (DFI) developed by McNeish and Wolf to the context of time series analysis. DFI is a simulation-based method for deriving fit index cutoff values tailored to the specific model and data characteristics. Through simulations, we show that DFI cutoffs for detecting an omitted path in time series network models tend to be closer to exact fit than the popular benchmark values developed by Hu and Bentler. …
Computer Science (5 works) · Developmental psychology (5 works) · Psychology (5 works) · Child and Adolescent Psychosocial and Emotional Development (4 works) · Econometrics (4 works) · Mathematics (4 works) · Mental Health Research Topics (4 works) · Psychiatry (4 works) · Social Psychology (4 works) · Statistics (4 works)