Harald Janson
Biographic Data
| ID | 4415314 |
|---|---|
| NAME | Harald Janson |
| GIVEN NAMES | Harald |
| FAMILY NAME | Janson |
| SIGNATURE | JANSON H |
| AFFILIATIONS | The Norwegian Center for Child Behavioral Development |
| ORCID | 0000-0003-0414-7256 |
| VERIFIED | Yes |
| TOTAL WORKS | 12 |
| TOTAL CITATIONS | 20 |
| AUTHOR COUNT | 12 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2000 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 3 |
Validation of the family investment model in Norwegian families: A longitudinal investigation of family SES, parent cognitive stimulation, and child outcomes
The family investment model (FIM) has not been tested within a Nordic welfare state. • Multi-respondent and multi-method Norwegian data at child age 6 months to Grade 1. • Several significant indirect effects in line with the FIM propositions were found. • SES and parental investments affect child development in this socioeconomic context. The family investment model (FIM) is a theoretical framework linking family SES to child developmental outco…
The impact of maternal lifetime stressor exposure on child effortful control in the preschool years: Findings from the Behavior Outlook Norwegian Developmental study
Pandemic-Related Stress Symptoms Among Norwegian Parents of Adolescents in Grades 6 to 8
We investigated pandemic-related stress symptoms during the first COVID-19 lockdown period in spring 2020 among parents of adolescents that were 11 to 13 years old in the study period. We also investigated whether parental stress symptoms were associated with family situation and family activities during lockdown. Altogether 147 couples reported about their own trauma-related stress symptoms following the outbreak of the pandemic. Among the respo…
Mother–Child Interaction in Families With Internationally Adopted Children and Families With Biological Children at Age 2: Similarities and Differences
Videotaped observations of mother–child interactions in adoptive and biological dyads showed some significant differences in overall quality of interactions at age 2. The differences included both mother and child observed behavior during a free-play and teaching setting. There were no significant differences in adoptive and biological mother’s sensitivity/responsiveness toward their children, which has been documented to be important for childre…
Normative development of physical aggression from 8 to 26 months
This study investigated the normative use and developmental course of physical aggression (PA), defined as use of physical force such as hitting, biting, and kicking, from 8 to 26 months and predictors thereof. We used data from the Behavior Outlook Norwegian Developmental Study, comprising 1,159 children (559 girls and 600 boys). Both mothers and fathers reported frequently about their child's use of PA in personal and telephone interviews. Mean…
Trajectories of maternal symptoms of depression and anxiety over 13 years: The influence of stress, social support, and maternal temperament
This study indicates that factors present early in the child rearing phase may provide substantial prediction of the variance in maternal symptoms of depression and anxiety over the following 13 years. Temperamental distress and child related stressors were the strongest predictors of membership in different depression and anxiety symptom trajectory groups
Predicting early center care utilization in a context of universal access
Trajectories of maternal symptoms of anxiety and depression. A 13-year longitudinal study of a population-based sample
The study shows socio-demographic differences between mothers classified into six trajectory groups based on symptoms of anxiety and depression covering 13 years of the child-rearing period. Specific socio-demographic risk factors characterised mothers in the High-chronic symptom group. Identifying subgroups with enduring problems might inform more targeted preventive efforts
Temperament profiles from infancy to middle childhood: Development and associations with behavior problems
The authors applied I-States as Objects Analysis (ISOA), a recently proposed person-oriented analytic approach, to the study of temperament development in 921 Norwegian children from a population-based sample. A 5-profile classification based on cluster analysis of standardized mother reports of activity, sociability, emotionality, and shyness at ages 18 months, 30 months, 4-5 years, and 8-9 years was interpretable and highly replicable. The prev…
A Measure of Agreement for Interval or Nominal Multivariate Observations by Different Sets of Judges
This article addresses the problem of accounting overall multivariate chance-corrected interobserver agreement when targets have been rated by different sets of judges (not necessarily equal in number). The proposed approach builds on Janson and Olsson’s multivariate generalization of Cohen’s kappa but incorporates weighting for number of judges and applies an expression for expected disagreement suitable for the case with different judges. The a…
A Measure of Agreement for Interval or Nominal Multivariate Observations
This article addresses the problem of accounting overall chance-corrected interobserver agreement among the multivariate ratings of several judges. Modifying an approach by Berry and Mielke, a generalization of Cohen’s kappa coefficient is proposed. The generalized statistic accounts agreement for multivariate interval or nominal observations among several judges. The statistic’s metric is conventional, and in the univariate case it is equivalent…
Latent Transition Analysis with Covariates, Nonresponse, Summary Statistics and Diagnostics: Modelling Children's Drawing Development
Latent transition analysis (LTA) is one approach for the testing of stage theories in developmental psychology. In this article we describe how the practicability of the approach can be enhanced by incorporating recent developments in latent class regression modelling. We describe LTA extended to incorporating partial nonresponse and allowing the values of parameters associated with latent class membership to be dependent on auxiliary variables. …
Temperament profiles from infancy to middle childhood: Development and associations with behavior problems
The authors applied I-States as Objects Analysis (ISOA), a recently proposed person-oriented analytic approach, to the study of temperament development in 921 Norwegian children from a population-based sample. A 5-profile classification based on cluster analysis of standardized mother reports of activity, sociability, emotionality, and shyness at ages 18 months, 30 months, 4-5 years, and 8-9 years was interpretable and highly replicable. The prev…
Predicting early center care utilization in a context of universal access
Normative development of physical aggression from 8 to 26 months
This study investigated the normative use and developmental course of physical aggression (PA), defined as use of physical force such as hitting, biting, and kicking, from 8 to 26 months and predictors thereof. We used data from the Behavior Outlook Norwegian Developmental Study, comprising 1,159 children (559 girls and 600 boys). Both mothers and fathers reported frequently about their child's use of PA in personal and telephone interviews. Mean…
Mother–Child Interaction in Families With Internationally Adopted Children and Families With Biological Children at Age 2: Similarities and Differences
Videotaped observations of mother–child interactions in adoptive and biological dyads showed some significant differences in overall quality of interactions at age 2. The differences included both mother and child observed behavior during a free-play and teaching setting. There were no significant differences in adoptive and biological mother’s sensitivity/responsiveness toward their children, which has been documented to be important for childre…
Latent Transition Analysis with Covariates, Nonresponse, Summary Statistics and Diagnostics: Modelling Children's Drawing Development
Latent transition analysis (LTA) is one approach for the testing of stage theories in developmental psychology. In this article we describe how the practicability of the approach can be enhanced by incorporating recent developments in latent class regression modelling. We describe LTA extended to incorporating partial nonresponse and allowing the values of parameters associated with latent class membership to be dependent on auxiliary variables. …
A Measure of Agreement for Interval or Nominal Multivariate Observations
This article addresses the problem of accounting overall chance-corrected interobserver agreement among the multivariate ratings of several judges. Modifying an approach by Berry and Mielke, a generalization of Cohen’s kappa coefficient is proposed. The generalized statistic accounts agreement for multivariate interval or nominal observations among several judges. The statistic’s metric is conventional, and in the univariate case it is equivalent…
A Measure of Agreement for Interval or Nominal Multivariate Observations by Different Sets of Judges
This article addresses the problem of accounting overall multivariate chance-corrected interobserver agreement when targets have been rated by different sets of judges (not necessarily equal in number). The proposed approach builds on Janson and Olsson’s multivariate generalization of Cohen’s kappa but incorporates weighting for number of judges and applies an expression for expected disagreement suitable for the case with different judges. The a…
Temperament profiles from infancy to middle childhood: Development and associations with behavior problems
The authors applied I-States as Objects Analysis (ISOA), a recently proposed person-oriented analytic approach, to the study of temperament development in 921 Norwegian children from a population-based sample. A 5-profile classification based on cluster analysis of standardized mother reports of activity, sociability, emotionality, and shyness at ages 18 months, 30 months, 4-5 years, and 8-9 years was interpretable and highly replicable. The prev…
Trajectories of maternal symptoms of anxiety and depression. A 13-year longitudinal study of a population-based sample
The study shows socio-demographic differences between mothers classified into six trajectory groups based on symptoms of anxiety and depression covering 13 years of the child-rearing period. Specific socio-demographic risk factors characterised mothers in the High-chronic symptom group. Identifying subgroups with enduring problems might inform more targeted preventive efforts
Trajectories of maternal symptoms of depression and anxiety over 13 years: The influence of stress, social support, and maternal temperament
This study indicates that factors present early in the child rearing phase may provide substantial prediction of the variance in maternal symptoms of depression and anxiety over the following 13 years. Temperamental distress and child related stressors were the strongest predictors of membership in different depression and anxiety symptom trajectory groups
Predicting early center care utilization in a context of universal access
Normative development of physical aggression from 8 to 26 months
This study investigated the normative use and developmental course of physical aggression (PA), defined as use of physical force such as hitting, biting, and kicking, from 8 to 26 months and predictors thereof. We used data from the Behavior Outlook Norwegian Developmental Study, comprising 1,159 children (559 girls and 600 boys). Both mothers and fathers reported frequently about their child's use of PA in personal and telephone interviews. Mean…
Mother–Child Interaction in Families With Internationally Adopted Children and Families With Biological Children at Age 2: Similarities and Differences
Videotaped observations of mother–child interactions in adoptive and biological dyads showed some significant differences in overall quality of interactions at age 2. The differences included both mother and child observed behavior during a free-play and teaching setting. There were no significant differences in adoptive and biological mother’s sensitivity/responsiveness toward their children, which has been documented to be important for childre…
Pandemic-Related Stress Symptoms Among Norwegian Parents of Adolescents in Grades 6 to 8
We investigated pandemic-related stress symptoms during the first COVID-19 lockdown period in spring 2020 among parents of adolescents that were 11 to 13 years old in the study period. We also investigated whether parental stress symptoms were associated with family situation and family activities during lockdown. Altogether 147 couples reported about their own trauma-related stress symptoms following the outbreak of the pandemic. Among the respo…
The impact of maternal lifetime stressor exposure on child effortful control in the preschool years: Findings from the Behavior Outlook Norwegian Developmental study
Validation of the family investment model in Norwegian families: A longitudinal investigation of family SES, parent cognitive stimulation, and child outcomes
The family investment model (FIM) has not been tested within a Nordic welfare state. • Multi-respondent and multi-method Norwegian data at child age 6 months to Grade 1. • Several significant indirect effects in line with the FIM propositions were found. • SES and parental investments affect child development in this socioeconomic context. The family investment model (FIM) is a theoretical framework linking family SES to child developmental outco…
Child and Adolescent Psychosocial and Emotional Development (8 works) · Psychology (8 works) · Clinical Psychology (5 works) · Clinical Psychology (5 works) · Developmental psychology (5 works) · Early Childhood Education and Development (5 works) · Medicine (5 works) · Norwegian (5 works) · Demography (4 works) · Demography (4 works)