Investigation of the Relationship Between Temperament and Personality Traits and Voice Disorders in Religious Officials.

OBJECTIVE: Our study aims to determine the presence of voice disorder in religious officials and to examine the differences in temperament and personality traits between religious officials with and without voice disorder. METHODS AND PROCEDURES: A total of 87 religious officials between the ages of 18 and 65 were included in the study. For the objective evaluation of the voice of all individuals, a videolaryngostroboscopic examination was performed by a specialist Ear Nose Throat physician using a rigid endoscope. For temperament and personality assessments, each participant completed the TEMPS-A Temperament Rating Scale Turkish version and the Big Five-50 Personality Test Turkish Form (B5KT-50-Tr). All individuals were divided into groups according to the presence of voice disorder. RESULTS: Sixty-five of 87 individuals were found to have normal voice health, and 22 individuals were diagnosed with voice disorder. While there was a significant difference between the groups with and without voice disorder in terms of extraversion and emotional stability scores on the B5KT-50-Tr scale (P < 0.05), there was no significant difference in TEMPS-A temperament scale scores. CONCLUSIONS: There was no discernible disparity in the temperament traits of religious officials with and without voice disorders. It should be emphasized that religious officials who suffer from voice disorders exhibit personality traits such as low extroversion and emotional stability. The improvement of more effective intervention strategies can be boosted by considering the temperament and personality traits of these individuals while planning the voice assessment and therapy processes of these religious officials.

Infant and young child feeding practices as mediators in the relationship between early temperament and children's eating behaviors: A longitudinal study during COVID-19 pandemic.

Simultaneously investigating the influence of multiple early temperament dimensions on children's eating behaviors through infant and young child feeding practices may be essential for developing optimal intervention strategies. This longitudinal study gathered data at two assessment points: Time 1, evaluation of infant and young child feeding practices and children's temperament when they were between 6 and 12 months, and Time 2, assessment of children's eating behaviors at age 2. This study included sociodemographic characteristics, the Child Eating Behavior Questionnaire for Toddlers (CEBQ-T), the short form of Children Behavior Questionnaire (Revised IBQ-RSF), and the Infant Feeding Style Questionnaire (IFSQ) in eastern China. Structural equation modeling (SEM) was utilized to examine the pathways from three dimensions of early temperament to five types of children's eating behaviors mediated by three styles of infant and young child feeding practices. A total of 972 children, children's mean age was 14.58 ± 5.11 months, 464 (47.74%) being girls, while the mothers' mean age was 30.23 ± 3.56 years. Effortful control exhibited significant effects on food responsiveness and satiety responsiveness mediated by responsive feeding. Additionally, effortful control influenced enjoyment of food and satiety responsiveness mediated by restrictive feeding. Surgency had a significant effect on food responsiveness mediated by indulgent feeding. Negative affectivity impacted satiety responsiveness, enjoyment of food, and food responsiveness mediated by responsive feeding. This longitudinal study delineates the pathways from early temperament to eating behaviors mediated by infant and young child feeding practices among children aged 6-23 months. These findings highlight the need to prioritize intervention programs aimed at nurturing early temperament through appropriate infant and young child feeding practices to promote healthy eating behaviors for upper- and middle-income countries (UMICs) with similar contexts.

INVITED REVIEW: Phenotyping strategies and genetic background of dairy cattle behavior in intensive production systems - from trait definition to genomic selection.

Understanding and assessing dairy cattle behavior is critical for developing sustainable breeding programs and management practices. The behavior of individual animals can provide valuable information on their health and welfare status, improve reproductive management, and predict efficiency traits such as feed efficiency and milking efficiency. Routine genetic evaluations of animal behavior traits can contribute to optimizing breeding and management strategies for dairy cattle but require the identification of traits that capture the most important biological processes involved in behavioral responses. These traits should be heritable, repeatable, and measured in non-invasive and cost-effective ways in many individuals from the breeding populations or related reference populations. While behavior traits are heritable in dairy cattle populations, they are highly polygenic, with no known major genes influencing their phenotypic expression. Genetically selecting dairy cattle based on their behavior can be advantageous because of their relationship with other key traits such as animal health, welfare, and productive efficiency, as well as animal and handlers' safety. Trait definition and longitudinal data collection are still key challenges for breeding for behavioral responses in dairy cattle. However, the more recent developments and adoption of precision technologies in dairy farms provide avenues for more objective phenotyping and genetic selection of behavior traits. Furthermore, there is still a need to standardize phenotyping protocols for existing traits and develop guidelines for recording novel behavioral traits and integrating multiple data sources. This review gives an overview of the most common indicators of dairy cattle behavior, summarizes the main methods used for analyzing animal behavior in commercial settings, describes the genetic and genomic background of previously defined behavioral traits, and discusses strategies for breeding and improving behavior traits coupled with future opportunities for genetic selection for improved behavioral responses.

Novel pathways linked to the expression of temperament in Merino sheep: a genome-wide association study.

Animal temperament refers to the inherent behavioural and emotional characteristics of an animal, influencing how it interacts with its environment. The selection of sheep for temperament can change the temperament traits of the selected line and improve the welfare and production (reproduction, growth, immunity) of those animals. To understand the genetics that underly variation in temperament in sheep, and how selection on temperament can affect other production traits, a genome-wide association study was carried out. Merino sheep from lines selected for traits of calm and nervous temperament, and a commercial population, on which the temperament traits had never been assessed, were used. Blood samples from the three populations were genotyped using an Illumina GGP Ovine 50 K Genotyping BeadChip. The calm and nervous populations in the selected lines presented as distinct genetic populations, and 2 729 of the 45 761 single nucleotide polymorphisms (SNPs) had significantly different proportions between the two lines. Of those 2 729 SNPs, 2 084 were also associated with temperament traits in the commercial population. A genomic annotation identified 81 candidate genes for temperament, nearly half of which are associated with disorders of social behaviour in humans. Five of those 81 candidate genes are related to production traits in sheep. Two genes were associated with personality disorders in humans and with production traits in sheep. We identified significant enrichment in genes involved in nervous system processes such as the regulation of systemic arterial blood pressure, ventricular myocyte action, multicellular organismal signalling, ion transmembrane transport, and calcium ion binding, suggesting that temperament is underpinned by variation in multiple biological systems. Our results contribute to understanding of the genetic basis of animal temperament which could be applied to the genetic evaluation of temperament in sheep and other farm animals.

Microbial exposure at birth and the development of behavioral temperament during the first three years of childhood.

We investigated cross-sectional and longitudinal associations between neonate microbial exposure and emerging behavioral temperament measures at the ages of 1, 2, and 3 years. Infants and mothers (n = 335) were extracted from the Kuopio Birth Cohort Study. Temperament was assessed using the Infant Behavioral and Early Childhood Behavioral Questionnaires. Microbial samples were collected from oral cavity at birth and the bacterial profiles were assessed using 16S rRNA gene sequencing. Microbial diversity was characterized using alpha and beta diversity metrics. Analyses were performed for the most abundant genera. The sample was analyzed as a whole, as well as divided into subgroups representing no antibiotic use during birth (n = 198) and those with antibiotic use during birth (n = 137). No significant associations were observed between microbial profiles and behavioral measures after Bonferroni corrections. Nevertheless, our pre-correction results indicated an association between increased behavioral temperament surgency in the first year and beta diversity (high abundance of Bacteroides, Faecalibacterium and Blautia, low abundance of Lactobacillus) in the antibiotic use group. Additionally, pre-corrections, a high relative abundance of Staphylococcus was associated with increased surgency through years 1, 2, and 3 in the no antibiotics group, prompting consideration into a possible link between antibiotic use and emerging behavioral temperament.

Influence of temperament on children's cooperation during dental treatment.

Background: The etiologies of childhood dental fear/dental behavior management problems have been extensively studied, especially the role of children's temperaments. This study aimed to evaluate the effect of temperament and its associated variables on the anxiety and cooperation level of preschool children in a dental clinic. Materials and Methods: This cross-sectional study involved 103, 4-6-year-old patients (39 boys and 64 girls). The children's parents or guardians completed the Child Fear Survey Schedule (CFSS) Dental Subscale and the Malhotra temperament questionnaire before the treatment. Patients' anxiety and cooperation levels were then assessed through three distinct treatment stages of fluoride therapy, injection of local anesthesia, and drilling, by applying the Venham anxiety and clinical cooperation scales. The data were analyzed using analysis of variance, Mann-Whitney, Kruskal-Wallis, and Chi-square tests. The significance level of 0.05 was deemed relevant in the analysis. Results: A significant correlation was established between the mean of CFSS and the variety of temperament (P = 0.001). Anxiety and uncooperative behavior during injection and drilling were strongly related to lower sociability scores. Furthermore, higher anxiety during the drilling stage was related to higher impulsivity scores. Conclusion: The evaluation of children's anxiety and cooperation in dental clinics heavily relies on temperament and certain related factors, such as sociability. These variables serve as crucial benchmarks in understanding and assessing the psychological state of children during dental procedures.

Influence of temperament and emotional dysregulation on depressive symptoms in adults with attention-deficit/hyperactivity disorder: A structural equation modelling analysis.

OBJECTIVE: Depressive symptoms in adults with Attention-Deficit/Hyperactivity Disorder (ADHD) are common. Clinical evidence suggests that affective temperaments and emotional dysregulation are reasonable putative explanatory factors of this association. In this study, we thus investigated the role of these features in influencing concomitant depressive symptoms in adults with ADHD. METHODS: Outpatients with ADHD were consecutively enrolled. Depressive symptoms were measured by the Symptom Checklist-90 Revised (SCL-90-R), while the Temperament Evaluation Memphis for Pisa, Paris, and San Diego-Autoquestionnaire (TEMPS-A) was used to assess the affective temperament dimensions. We tested emotional dysregulation using the Difficulties in Emotion Regulation Scale (DERS). Structural equation modeling was performed to test the interplay between temperament, emotional dysregulation, and depressive symptoms, accounting for other clinical variables that showed an association with depressive symptoms at univariate level. RESULTS: A total of 164 individuals with ADHD (mean age of 29.8 ± 10.7 years), of which 61 (37.2%) women, were recruited. Data showed that, accounting for the possible influence of psychopharmacological treatment and ADHD severity, both emotional dysregulation (p < 0.001) and dysthymic temperament (p = 0.003), though not other affective temperament dimensions, might influence depressive symptoms in people with ADHD. CONCLUSIONS: Despite some limitations, our study emphasizes the role of dysthymic temperament and emotional dysregulation in contributing to levels of depressive symptoms among individuals with ADHD. A comprehensive temperament assessment in adults with ADHD can offer valuable insights for developing tailored treatment strategies and enhancing overall patient care.

The relationship between prodromal symptom levels and affective temperament features and emotional dysregulation in patients diagnosed with bipolar disorder and their first-degree relatives: A controlled study.

BACKGROUND: The frequency of developing psychiatric symptoms is higher in the first-degree relatives of bipolar patients compared to the healthy population. This study aims to determine the possible diagnosis of bipolarity by revealing the bipolar prodromal features, temperament changes, and emotional disregulation in the first-degree relatives of bipolar patients and their interrelationships. METHODS: A total of 150 patients, including bipolar disorder patients, their first-degree relatives, and a healthy control group, aged 18-65 who met the study inclusion criteria, were included in the study. Sociodemographic data form, Bipolar Prodromal Symptom Scale (BPSS), Temperament Evaluation of Memphis, Pisa, Paris, San Diego Autoquestionnaire (TEMPS-A), and Difficulty in Emotion Regulation Scale (DERS) were administered to all participants. RESULTS: Significant differences were found between the BPSS, TEMPS-A, and DERS total and subscale scores of the bipolar patient group, first-degree relatives, and healthy control group (p < 0.001). There were significant differences in BPSS frequency and severity subscale scores, TEMPS-A hyperthymic and cyclothymic subscale scores, and DERS strategy, goal-oriented, and awareness subscale scores between patients and their first-degree relatives (p < 0.001). Additionally, all scale scores of the patient relatives were significantly different from the healthy control group (p < 0.001). A significant relationship was found between the prodromal scores and temperament scores of the patient relatives, and between the temperament scores and DERS scores (p < 0.001). CONCLUSION: It has been observed that the severity and frequency of bipolar prodromal symptoms, temperament changes, and difficulty in mood regulation are higher in bipolar patients and their first-degree relatives compared to the healthy population. Differences were found in hyperthymic and cyclothymic temperament features and difficulty in mood regulation scores between bipolar patients and their first-degree relatives. Patient relatives showed significant changes in all parameters compared to the healthy group. The severity of bipolar prodromal symptoms in patient relatives was associated with cyclothymic and anxious temperament features, while the frequency of bipolar symptoms was associated with anxious temperament. Relationships were found between some temperament and mood regulation difficulty sub-scores. In light of these findings, evaluating clinical variables such as the frequency and severity of prodromal symptoms, temperament features, and difficulty in mood regulation in the first-degree relatives of bipolar patients may be an appropriate approach for diagnosing mood disorders.

Restrictive, but not instrumental feeding, is associated with Eating in the Absence of Hunger in toddlers: A cross-sectional lab-based study.

Understanding the early origins of Eating in the Absence of Hunger (EAH) is crucial, as maladaptive appetite regulation contributes to excessive weight gain in childhood. This cross-sectional study primarily investigated in toddlers the associations between EAH and parental feeding practices (PFP), focusing on instrumental feeding. It also explored the associations with children's temperament or food accessibility, and their potential moderating effects on the relationship between EAH and PFP. Sixty-six parents and toddlers aged 24-36 months participated. EAH (kcal) was assessed using Fisher & Birch's (1999) lab-based paradigm. PFP, children's general temperament and appetitive traits, and food accessibility were parent-reported. Children's weight and height were measured to calculate their BMI z-score. Linear regressions analyzed associations between EAH and PFP, adjusted or not for children's or parents' characteristics. Interactions assessed the moderating effects of temperament or food accessibility. Toddlers' EAH (43 ± 41 kcal) was unrelated to instrumental feeding, namely using food as a reward (r=-0.08, p=0.76) and to regulate emotions (r=0.04, p=0.76), which were rarely applied by parents. EAH was not associated with children's temperament or food accessibility, but exploratory analyses revealed a positive association with parental restriction for health reasons (RFH, r=0.30, p=0.01), especially at high and moderate levels of Ease of access to food (RFH x Ease of access interaction: ß=12.2, p=0.01). Soothability did not moderate the relationship between EAH and PFP. In conclusion, toddler's EAH was not associated with instrumental feeding but correlated positively with health-related restriction. This was moderated by food accessibility, suggesting that limiting food accessibility in early childhood may mitigate this adverse relationship. This study was preregistered (https://osf.io/6r5m8) and received ethical approbation (CEEI, registration number 23-1001).

Training Protocol for Nellore Cattle in Respirometry Flow Trials Using Non-Ventilated Facial Mask.

Training is instrumental in identifying and selecting cattle that exhibit greater cooperation with experimental conditions required in flow respirometry assays, like restraint and the use of a valved facial mask. In our study, a tailored training protocol for Nellore cattle facilitated their participation in flow respirometry assays with a valved facial mask. Over 127 days, 30 entire Nellore males, weighing 450 ± 25 kg and averaging 32 ± 2 months, underwent training from May to September 2022. The regimen involved gradually altering the animals' environment and providing positive reinforcement, divided into three phases. Physiological and behavioral responses to containment routines and facial mask use were meticulously assessed. Principal component analyses revealed dissimilarity patterns among the animals. Animals classified as less reactive showed increased acceptance of handling, reduced reactions to weighing, and greater tolerance of the facial mask. In the final phase, the least reactive animals tolerated wearing a valved mask for extended periods without notable changes in respiratory rate. The training protocol effectively identified and selected Nellore cattle displaying enhanced cooperation with restraint and mask use during flow respirometry assays, without apparent behavioral or physiological alterations.

Maternal psychological distress and temperament traits in children from infancy to late childhood.

Background: Maternal psychological distress during pregnancy is associated with infant temperament. Whether associations persist into late childhood, whether maternal distress is associated with temperament change from infancy to late childhood, whether associations are independent of maternal concurrent distress, and whether maternal distress has sensitive exposure periods on child temperament remain unclear. Methods: Our study includes mother-child dyads from Finnish, prospective Prediction and Prevention of Preeclampsia and Intrauterine Growth Restriction study. The mothers completed the Center for Epidemiologic Studies Depression Scale, State Anxiety Inventory and Perceived Stress Scale: biweekly up to 14 times during pregnancy; once in infancy (at child age 4-12 months); and once in late childhood (at child age 7-11 years). They also completed the Infant Behavior Questionnaire Revised at the infancy (n = 2538) and Temperament in Middle Childhood Questionnaire at the late childhood (n = 2004; 1693 children had data at both follow-ups) follow-up on child negative affectivity, extraversion and effortful control. We examined the associations of maternal distress with child temperament with linear regression, linear mixed and Bayesian relevant lifecourse exposure models. Results: Maternal distress during pregnancy was associated with higher negative affectivity and lower effortful control in children in infancy and late childhood. Maternal distress during pregnancy was also associated with increases in negative affectivity, decreases in effortful Control, and smaller decreases in extraversion from infancy to late childhood. The associations with late childhood temperament and temperament change were independent of maternal concurrent distress. Late childhood was a sensitive period for lifetime-to-date effects of maternal distress on late childhood negative affectivity and effortful control. Distress during pregnancy and infancy had smaller contributions. Conclusions: Maternal psychological distress during pregnancy is associated with individual differences and change in child temperament from infancy to late childhood. However, distress during pregnancy has a smaller effect on late childhood temperament than maternal concurrent distress.

Late Adolescents' Early Maladaptive Schemas: Are They Longitudinally Linked with Middle Childhood Temperament Over and Above Attachment?

Temperament is thought to influence the development of early maladaptive schemas (EMSs). However, whether temperament is longitudinally related to EMSs beyond attachment, the best known predictor of EMSs, has been underexplored. Hence, this study investigated (1) Whether middle childhood temperament is longitudinally related to late adolescent EMSs, (2) To what extent temperament explains EMSs beyond middle childhood attachment, and (3) Whether attachment moderates this temperament-EMSs link. In total, 157 children (Mage = 10.91 in middle childhood, Mage = 16.71 in late adolescence) participated in this study. Adolescent EMSs were assessed along with middle childhood temperamental negative affect, affiliation, surgency, and effortful control, and attachment at both explicit and implicit levels. Results indicated that all temperamental features were longitudinally related to later EMSs; the majority of the temperament-EMSs links did not survive after controlling for attachment, except for some limited correlations between EMSs and negative affect and effortful control; and an inconsistent moderating effect for attachment on the temperament-EMSs link. This study provides further insight into the role of child factors (middle childhood temperament and late adolescent attachment) in understanding EMSs variability in late adolescence. It suggests that EMSs are informed more by past relational experiences (attachment) than children's inborn tendencies (temperament).

Methods of behavioral testing in dogs: a scoping review and analysis of test stimuli.

Background: Behavioral testing is widely used to measure individual differences in behavior and cognition among dogs and predict underlying psychological traits. However, the diverse applications, methodological variability, and lack of standardization in canine behavioral testing has posed challenges for researchers and practitioners seeking to use these tests. To address these complexities, this review sought to synthesize and describe behavioral testing methods by creating a framework that uses a "dog-centric" perspective to categorize the test stimuli used to elicit responses from dogs. Methods: A scoping review was conducted to identify scientific literature that has reported behavioral testing to assess psychological traits in dogs. Five online databases were systematically searched. Following this, an inductive content analysis was conducted to evaluate and summarize the behavioral testing methods in the literature. Results: A total of 392 publications met the selection criteria and were included in the analysis, collectively reporting 2,362 behavioral tests. These tests were individually evaluated and categorized. Our content analysis distinguished 29 subcategories of behavioral testing stimuli that have been used, grouped into three major categories: human-oriented stimuli; environmental stimuli; and motivator-oriented stimuli. Conclusion: Despite the methodological heterogeneity observed across behavioral testing methods, our study identified commonalities in many of the stimuli used in test protocols. The resulting framework provides a practical overview of published behavioral tests and their applications, which may assist researchers in selecting and designing appropriate tests for their purposes.

Correlation of Personality, Temperament, and Behavior of Children in the Dental Environment.

Aim and background: A child's temperament, influenced by inborn traits and emotional regulation, can impact their dental behavior and caries risk. Parenting styles, such as authoritative, authoritarian, permissive, or neglectful, also play a significant role. Authoritative parenting tends to yield more favorable dental outcomes, while permissive parenting can lead to a higher prevalence of caries. Studying these interactions can help tailor dental interventions and address potential risks associated with caries development. Thus, the study aims to correlate parental personality, the child's temperament to dental caries, and child's behavior in a dental setting. Materials and methods: A cross-sectional study was conducted on 160 children in the age-group of 6-9 years. The children were selected based on the selection criteria. The children were asked to fill out the parental perception questionnaire (PPQ), and the parents were asked to fill out the emotionality, activity, sociability (EAS) questionnaire to assess the parenting style and child's temperamental status. Later, the child's behavior pattern was assessed using the Frankl behavior rating scale. The children were intraorally examined for the presence of caries using the decayed, extracted, filled teeth (deft) and decayed, missing, filled teeth (DMFT) index. All the data were tabulated and statistically analyzed. Results: In this study, a total of 160 children were assessed, including 84 boys (52.3%) and 76 girls (47.5%), with an average age of 7.8 years. One-way analysis of variance (ANOVA) followed by Scheffe's post hoc test was performed to compare the temperamental status and parenting style with the behavior of the child in the dental office. The results were statistically significant with a p-value of 0.001. Pearson's correlation coefficient revealed a significant positive correlation between Temperament E scores and def scores in children with positive behavior (p-value = 0.004). Conclusion: This study's findings suggest that a child's behavior in a dental office is influenced by the parent's personality, the child's temperament, and the dentist. Clinical significance: A child's capacity to handle dental visits and their overall oral health can be notably affected by the child's temperament and parenting style. How to cite this article: Thamilvanan S, Srinivasan D, Benedict CH, et al. Correlation of Personality, Temperament, and Behavior of Children in the Dental Environment. Int J Clin Pediatr Dent 2024;17(8):907-912.

Does Temperament Constitute a Risk Factor for Adult Attention Deficit Hyperactivity Disorder?

OBJECTIVE: The aim of this study was to examine the temperament characteristics of adults with attention deficit hyperactivity disorder (ADHD) and the relationship between ADHD subtypes and temperament. Additionally, the study aimed to investigate the relationship between childhood ADHD symptoms and temperament. METHODS: The study included 59 ADHD patients aged between 18 and 60 years and 44 healthy controls. All participants completed the Wender-Utah Rating Scale (WURS) and the Adult Attention Deficit Hyperactivity Disorder Diagnosis and Rating Scale. Temperament characteristics were assessed using the Temperament Evaluation of Memphis, Pisa, Paris, and San Diego-Autoquestionnaire scale (TEMPS-A). RESULTS: The ADHD group had significantly higher scores for cyclothymic, irritable, and anxious temperament compared to the control group (p<0.001). The number of individuals with cyclothymic, irritable, and anxious temperament was also significantly higher in the ADHD group (p=0.007, p=0.018, p=0.029, respectively). Positive correlations were found between cyclothymic and depressive temperament scores and WURS scores (r=0.278, p=0.033; r=0.326, p=0.012, respectively), between hyperthymic temperament scores and hyperactivity scores (r=0.399, p=0.002), and between depressive temperament scores and attention deficit scores (r=0.303, p=0.020). There was no relationship between ADHD subtypes and dominant temperament (p>0.05). CONCLUSION: The most common dominant temperament in the ADHD group was cyclothymic, irritable, and anxious. The positive correlation between WURS scores and cyclothymic temperament suggests that cyclothymic temperament may be a risk factor for adult ADHD.

Neuroticism Is Prospectively Associated With 30-Month Changes in Broadband Internalizing Symptoms, but Not Narrowband Positive Affect or Anxious Arousal, in Emerging Adulthood.

Elevated levels of Neuroticism/Negative Emotionality (N/NE) and, less consistently, lower levels of Extraversion/Positive Emotionality (E/PE) confer risk for pathological depression and anxiety. To date, most prospective-longitudinal research has narrowly focused on traditional diagnostic categories, creating uncertainty about the precise nature of these prospective associations. Adopting an explicitly hierarchical-dimensional approach, we examined the association between baseline variation in personality and longitudinal changes in broad and narrow internalizing-symptom dimensions in 234 emerging adults followed for 2.5 years, during the transition from older adolescence to early adulthood. N/NE was uniquely associated with increases in broadband internalizing-the core cognitive and affective symptoms that cut across the emotional disorders-and unrelated to the narrower dimensions of positive affect and anxious arousal that differentiate specific internalizing presentations. Variation in E/PE and several other Big Five traits was cross-sectionally, but not prospectively, related to longitudinal changes in specific internalizing symptoms. Exploratory personality-facet-level analyses provided preliminary evidence of more granular associations between personality and longitudinal changes in internalizing symptoms. These observations enhance the precision of models linking personality to internalizing illness; highlight the centrality of N/NE to increases in transdiagnostic internalizing symptoms during a key developmental chapter; and set the stage for developing more effective prevention and treatment strategies.

A longitudinal study on the relation between parenting and Toddler's disruptive behavior: what is the role of Toddler's negative emotionality and physiological stress reactivity?

Harsh and unsupportive parenting is a risk factor for the development of disruptive behavior in children. However, little is known about how children's temperament and stress reactivity influence this relation. In a three-wave longitudinal study, we examined whether the associations between parenting practices (supportive parenting, positive discipline, and harsh discipline) and child disruptive behavior were mediated by child temperament (negative emotionality) and stress reactivity (heart rate reactivity). In 72 families (Mage child = 14.6 months), living in the Netherlands, parents reported on their parenting practices and their children's disruptive behavior and negative emotionality. Children's heart rate reactivity was assessed through a series of stress-inducing tasks. Results from regression-based mediation analyses with bootstrapping showed that negative emotionality and stress reactivity did not mediate the relation between parenting and disruptive behavior. The results overall demonstrate that in a group of children this age, a reinforcing dynamic between parenting, child stress and disruptive behavior is not yet firmly established.

Leveraging machine learning to study how temperament scores predict pre-term birth status.

Background: Preterm birth (birth at <37 completed weeks gestation) is a significant public heatlh concern worldwide. Important health, and developmental consequences of preterm birth include altered temperament development, with greater dysregulation and distress proneness. Aims: The present study leveraged advanced quantitative techniques, namely machine learning approaches, to discern the contribution of narrowly defined and broadband temperament dimensions to birth status classification (full-term vs. preterm). Along with contributing to the literature addressing temperament of infants born preterm, the present study serves as a methodological demonstration of these innovative statistical techniques. Study design: This study represents a metanalysis conducted with multiple samples (N = 19) including preterm (n = 201) children and (n = 402) born at term, with data combined across investigations to perform classification analyses. Subjects: Participants included infants born preterm and term-born comparison children, either matched on chronological age or age adjusted for prematurity. Outcome measures: Infant Behavior Questionnaire-Revised Very Short Form (IBQ-R VSF) was completed by mothers, with factor and item-level data considered herein. Results and conclusions: Accuracy estimates were generally similar regardless of the comparison groups. Results indicated a slightly higher accuracy and efficiency for IBQR-VSF item-based models vs. factor-level models. Divergent patterns of feature importance (i.e., the extent to which a factor/item contributed to classification) were observed for the two comparison groups (chronological age vs. adjusted age) using factor-level scores; however, itemized models indicated that the two most critical items were associated with effortful control and negative emotionality regardless of comparison group.

The role of affective temperaments in self-care and medication adherence among individuals with bipolar disorder: a moderation analysis.

Background: Affective temperament, defined as the fundamental predisposition from which normal affective states originate or as the constitutional core of personality, play a crucial role in mood disorders, particularly bipolar disorders. Understanding the relationship between temperaments, treatment adherence, and self-care is crucial for effective management and improved clinical results. Objectives: This study aims to (1) assess the correlation between affective temperaments and treatment adherence, (2) investigate the relationship between affective temperaments and self-care abilities, (3) identify predictors of treatment adherence, and (4) explore the moderating effect of self-care on the relationship between treatment adherence and depressive temperament in individuals with bipolar disorder. Methods: A cross-sectional study was conducted with 231 individuals diagnosed with bipolar disorder (BD) type I (N=160) and type II (N=71). The participants were evaluated using the following psychometric tools: Temperament Evaluation of Memphis, Pisa, and San Diego (TEMPS) to assess affective temperaments, Personal and Social Performance Scale (PSP) to evaluate social functioning and self-care abilities, and Morisky Medication Adherence Scale (MMAS) to measure treatment adherence. The study involved statistical analyses to examine correlations, identify predictors, and explore moderating effects. Results: The findings revealed significant correlations between affective temperaments and both treatment adherence and self-care abilities. Specifically, hyperthymic temperament was positively associated with higher treatment adherence, whereas cyclothymic and depressive temperaments were linked to lower adherence. Self-care abilities were found to mediate the relationship between depressive temperament and treatment adherence, suggesting that improved self-care can enhance adherence in individuals with depressive temperament. Conclusions: Affective temperaments significantly influence treatment adherence and self-care abilities in individuals with bipolar disorder. The mediating role of self-care highlights the importance of developing targeted interventions to improve self-care practices, thereby enhancing treatment adherence and overall well-being. Personalized treatment strategies based on temperament assessments could lead to better clinical outcomes and quality of life for individuals with bipolar disorder.

The Influence of Temperament, Theory of Mind, Inhibitory Control, and Prosocial Behavior on Child Anxiety Symptoms in the First Five Years of Life.

Anxiety disorders are among the most prevalent of all mental health disorders, often originating in early childhood and extending into later childhood, adolescence, and adulthood. Determining salient risk factors that precede their development is important for prevention and intervention efforts. Towards this end, we examined the role of temperament, theory of mind, inhibitory control, and prosocial behavior on child anxiety symptoms in the first 5 years of life. A community sample of children and their parents (N = 399) enrolled in a longitudinal study of emotion processing were assessed when the children were infants and at ages 2 years, 3 years, and 5 years. Linear mixed models and linear regression models revealed that greater anxiety at 5 years was associated with greater negative affectivity and behavioral inhibition, lower effortful control, lower theory of mind scores on the "desires" domain, and higher scores on the "intentions" domain (assessed from infancy to 3 years of age). These characteristics may be useful to assess in clinical settings to evaluate a patient's risk for developing anxiety. They may also be useful in developing interventions targeting specific vulnerabilities.