Within- and between-session changes of in-session reflective functioning of mothers in dyadic parent-infant psychotherapy.

This study investigated if in-session reflective functioning (RF) of mothers improved between and within sessions of brief dyadic focused parent-infant psychotherapy (fPIP) for the treatment of regulatory disorders in infants.In-session RF was coded for 44 therapy sessions from N = 11 mothers randomly selected from a RCT on the efficacy of fPIP as part of secondary analyses. A new rating system distinguished self-focused and child-focused in-session RF. Cumulative ordinal regression models were applied to analyze the dynamics of in-session RF within and across sessions, controlling for word count of each statement.While in-session RF improved significantly within sessions, between-session RF improved significantly only in the second session compared to the first with a significant decrease observed in the last session. Child-focused in-session RF was significantly lower than self-focused in-session RF at the beginning of the sessions but improved significantly stronger than self-focused in-session RF during sessions.In-session RF (particularly in child-focused statements) can be regarded as a dynamic change process relevant within each session of dyadic fPIP. Improvements made on a session-by-session basis may not be maintained until the next session. Implications for practitioners and in-session RF research are discussed.

Microtemporal Dynamics of Dietary Intake, Physical Activity, and Impulsivity in Adult Attention-Deficit/Hyperactivity Disorder: Ecological Momentary Assessment Study Within Nutritional Psychiatry.

BACKGROUND: Increasing attention is being paid to lifestyle factors, such as nutrition and physical activity (PA), as potential complementary treatment options in attention-deficit/hyperactivity disorder (ADHD). Previous research indicates that sugar and saturated fat intake may be linked to increased impulsivity, a core symptom of ADHD, whereas protein intake and PA may be related to reduced impulsivity. However, most studies rely on cross-sectional data that lack microtemporal resolution and ecological validity, wherefore questions of microtemporal dynamics (eg, is the consumption of foods high in sugar associated with increased impulsivity within minutes or hours?) remain largely unanswered. Ecological momentary assessment (EMA) has the potential to bridge this gap. OBJECTIVE: This study is the first to apply EMA to assess microtemporal associations among macronutrient intake, PA, and state impulsivity in the daily life of adults with and without ADHD. METHODS: Over a 3-day period, participants reported state impulsivity 8 times per day (signal-contingent), recorded food and drink intake (event-contingent), and wore an accelerometer. Multilevel 2-part models were used to study the association among macronutrient intake, PA, and the probability to be impulsive as well as the intensity of impulsivity (ADHD: n=36; control: n=137). RESULTS: No association between macronutrient intake and state impulsivity was found. PA was not related to the intensity of impulsivity but to a higher probability to be impulsive (ADHD: ß=-.09, 95% CI -0.14 to -0.04; control: ß=-.03, 95% CI -0.05 to -0.01). No evidence was found that the combined intake of saturated fat and sugar amplified the increase in state impulsivity and that PA alleviated the positive association between sugar or fat intake and state impulsivity. CONCLUSIONS: Important methodological considerations are discussed that can contribute to the optimization of future EMA protocols. EMA research in the emerging field of nutritional psychiatry is still in its infancy; however, EMA is a highly promising and innovative approach as it offers insights into the microtemporal dynamics of psychiatric symptomology, dietary intake, and PA in daily life.

What is in the news today? How media-related affect shapes adolescents' stance towards the EU.

INTRODUCTION: Adolescence is regarded as a formative period for political development. One important developmental context is media. Negatively perceived political media content can foster populistic attitudes, which in turn decreases support of political institutions, such as the European Union (EU). As media valence effects are short-lived, this study examined intra-individual associations of media valence with European identity commitment and affect towards the EU, as well as indirect effects via populistic attitudes across 10 days. METHODS: We implemented a 10-day daily diary study with 371 adolescents from Germany (January to February 2022). Adolescents were on average 14.24 years old (SD = 0.55) and 60.4% were female. We estimated the hypothesized associations using multilevel structural equation models and dynamic structural equation models. RESULTS: We found significant associations between populistic attitudes and negative affect towards the EU on the same day and the next day. The lagged effect became nonsignificant, when including both same day and lagged effects into one model. Populistic attitudes were not significantly associated with European identity commitment within days or across days. Negative media content was associated with higher populistic attitudes on the same day and indirectly associated with negative affect towards the EU (b = -.01, 95% credible interval [-0.010, -0.004]). CONCLUSION: Negatively perceived political media content was associated with higher populistic attitudes and more negative affect towards the EU concurrently. Our results imply that media plays an important role for adolescents' development.

Associations of SLC6A4 methylation with salivary cortisol, salivary alpha-amylase, and subjective stress in everyday life.

Dysregulations of the hypothalamic-pituitary-adrenal (HPA) and sympatho-adrenal medullary (SAM) axis are associated with mental and somatic illness. However, there is lack of knowledge regarding the molecular mechanisms underlying these effects. Epigenetic states in the serotonin transporter gene (SLC6A4) were shown to be associated with stress in various forms. We hypothesized that levels of DNA methylation (DNAm) of SLC6A4 would be associated with altered SAM- and HPA regulation in daily life. N = 74 healthy persons participated in the study. An ecological momentary assessment (EMA) approach was used to assess indicators of stress in daily life. Each day included six concurrent assessments of saliva, to quantify cortisol (sCort; HPA axis) and alpha-amylase (sAA; SAM axis), and to assess self-reports on subjective stress. To assess SLC6A4 DNAm, peripheral blood was drawn and analyzed via bisulfite pyrosequencing. All data were assessed in two waves three months apart, each including two days of EMA and the assessment of SLC6A4 DNAm. Data were analyzed using multilevel models. On the between-person level, higher average levels of SLC6A4 DNAm were associated with higher average levels of sAA, but not with average levels of sCort. On the within-person level, higher levels of SLC6A4 DNAm were associated with lower levels of sAA and sCort. There were no associations of subjective stress with SLC6A4 DNAm. The results help to clarify the association between environmental stress and stress axes regulation, pointing towards an important role of differential within- and between-person effects of SLC6A4 DNAm, which might shape this association.

Affectionate touch and diurnal oxytocin levels: An ecological momentary assessment study.

Background: Affectionate touch, which is vital for mental and physical health, was restricted during the Covid-19 pandemic. This study investigated the association between momentary affectionate touch and subjective well-being, as well as salivary oxytocin and cortisol in everyday life during the pandemic. Methods: In the first step, we measured anxiety and depression symptoms, loneliness and attitudes toward social touch in a large cross-sectional online survey (N = 1050). From this sample, N = 247 participants completed ecological momentary assessments over 2 days with six daily assessments by answering smartphone-based questions on affectionate touch and momentary mental state, and providing concomitant saliva samples for cortisol and oxytocin assessment. Results: Multilevel models showed that on a within-person level, affectionate touch was associated with decreased self-reported anxiety, general burden, stress, and increased oxytocin levels. On a between-person level, affectionate touch was associated with decreased cortisol levels and higher happiness. Moreover, individuals with a positive attitude toward social touch experiencing loneliness reported more mental health problems. Conclusions: Our results suggest that affectionate touch is linked to higher endogenous oxytocin in times of pandemic and lockdown and might buffer stress on a subjective and hormonal level. These findings might have implications for preventing mental burden during social contact restrictions. Funding: The study was funded by the German Research Foundation, the German Psychological Society, and German Academic Exchange Service.

Fluid Intelligence Is (Much) More than Working Memory Capacity: An Experimental Analysis.

Empirical evidence suggests a great positive association between measures of fluid intelligence and working memory capacity, which implied to some researchers that fluid intelligence is little more than working memory. Because this conclusion is mostly based on correlation analysis, a causal relationship between fluid intelligence and working memory has not yet been established. The aim of the present study was therefore to provide an experimental analysis of this relationship. In a first study, 60 participants worked on items of the Advanced Progressive Matrices (APM) while simultaneously engaging in one of four secondary tasks to load specific components of the working memory system. There was a diminishing effect of loading the central executive on the APM performance, which could explain 15% of the variance in the APM score. In a second study, we used the same experimental manipulations but replaced the dependent variable with complex working memory span tasks from three different domains. There was also a diminishing effect of the experimental manipulation on span task performance, which could now explain 40% of the variance. These findings suggest a causal effect of working memory functioning on fluid intelligence test performance, but they also imply that factors other than working memory functioning must contribute to fluid intelligence.

Effects of mental contrasting on sleep and associations with stress: A randomized controlled trial.

Mental contrasting with implementation intentions (MCII) has been successfully applied to improve health-related behaviors (e.g. exercise). We explored its effectiveness to improve sleep outcomes beyond effects of sleep hygiene (SH) information, and investigated associations with stress. Eighty university employees (mean age: 29.6, SD = 4.5) were randomized to either a MCII + SH or a SH-only condition. During a baseline-week and a post-intervention week, sleep duration (Fitbit Alta and self-report), sleep quality, and stress were assessed daily and saliva was collected to assess the cortisol awakening response (CAR). In total, self-reported sleep quality and duration increased, but there was no meaningful condition*week interaction for sleep parameters or CAR. Higher average stress was associated with shorter sleep duration and lower sleep quality. Within-person, days with higher stress were followed by nights with lower sleep quality. Despite overall improvements, effects of MCII were not confirmed. MCII might be less effective to improve behaviors which are less controllable.

Ecological Momentary Assessment: A Meta-Analysis on Designs, Samples, and Compliance Across Research Fields.

Ecological Momentary Assessments (i.e., EMA, repeated assessments in daily life) are widespread in many fields of psychology and related disciplines. Yet, little knowledge exists on how differences in study designs and samples predict study compliance and dropout-two central parameters of data quality in (micro-)longitudinal research. The current meta-analysis included k = 477 articles (496 samples, total N = 677,536). For each article, we coded the design, sample characteristics, compliance, and dropout rate. The results showed that on average EMA studies scheduled six assessments per day, lasted for 7 days, and obtained a compliance of 79%. Studies with more assessments per day scheduled fewer assessment days, yet, the number of assessments did not predict compliance or dropout rates. Compliance was significantly higher in studies providing financial incentives. Otherwise, design or sample characteristics had little effects. We discuss the implications of the findings for planning, reporting, and reviewing EMA studies.

The Effectiveness of A Slow-Paced Diaphragmatic Breathing Exercise in Children's Daily Life: A Micro-Randomized Trial.

OBJECTIVE: Breathing exercises have been proposed as an effective intervention to improve subjective well-being and manage anxiety symptoms. As they are comparatively easy to learn and to implement, breathing exercises may be particularly beneficial for children. Although breathing exercises are ultimately supposed to provide salutary effects in individuals' everyday lives, immediate effects of breathing exercises in naturalistic contexts have received limited empirical attention. The purpose of this study was to examine immediate effects of slow-paced diaphragmatic breathing on negative affect as well as on relaxation in an ecologically valid setting. To that end, we conducted a micro-randomized trial in children's daily life. METHOD: On each of 15 days, children (N = 171, aged 9-13 years, 54% female) were randomized to different conditions: performing a video-guided slow-paced diaphragmatic breathing exercise (experimental condition), watching a different video (active control condition), or a passive control condition. RESULTS: The breathing exercise had no immediate effects on negative affect or relaxation compared to both control conditions. However, in situations when children reported higher levels of worries than usual, relaxation was higher when children performed the breathing exercise compared to the passive control condition. Compared to the active control condition, the breathing exercise did not result in higher levels of relaxation in situations when children worried more than normally. CONCLUSIONS: Findings highlight that context-specific factors can modulate the effectiveness of breathing exercises and should be taken into account to tailor interventions to individuals' needs.

How within-person effects shape between-person differences: A multilevel structural equation modeling perspective.

Various theoretical accounts suggest that within-person effects relating to everyday experiences (assessed, e.g., via experience sampling studies or daily diary studies) are a central element for understanding between-person differences in future outcomes. In this regard, it is often assumed that the within-person effect of a time-varying predictor X on a time-varying mediator M contributes to the long-term development in an outcome variable Y. In the present work, we demonstrate that traditional multilevel mediation approaches fall short in capturing the proposed mechanism, however. We suggest that a model in which between-person differences in the strength of within-person effects predict the outcome Y mediated via mean levels in M more adequately aligns with the presumed theoretical account that within-person effects shape between-person differences. Using simulated data, we show that the central parameters of this multilevel structural equation model can be recovered well in most of the investigated scenarios. Our approach has important implications for whether or not to control for mean levels in models with within-person effects as predictors. We illustrate the model using empirical data targeting the question if the within-person association of occurrence of daily stressors (X) with daily experiences of negative affect (M) longitudinally predicts between-person differences in change in depressive symptoms (Y). Implications for other multilevel designs and intervention studies are discussed. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Individual differences in the dietary response to stress in ecological momentary assessment: Does the individual-difference model need expansion?

According to the individual-difference model, individuals differ in the way stress changes their eating behaviour. Research shows that some increase, some decrease, and others show no change in food intake. Despite numerous efforts to identify moderating variables that explain these individual (i.e., between-person) differences, evidence remains inconclusive. The present study aims at deepening the understanding of the stress and eating relationship by applying ecological momentary assessment to study (1) the influence of stress on whether and how much individuals eat and (2) the moderating role of gender, age, BMI, trait stress-eating, and eating styles. The APPetite-mobile-app was used for 3 days to capture actual food intake (event-contingent) and perceived stress (signal-contingent). Data of 154 healthy adults suggest that stress is not associated with whether but how much individuals eat. Only gender moderated the relationship between stress and the amount of food intake. Individual differences were small indicating that an individual's dietary response to stress might not be as stable as yet assumed. Moreover, a study suggests that time-varying factors (e.g., food availability) moderate the stress and eating relationship. Hence, intraindividual (i.e., within-person) variability may be relevant. Therefore, we propose an expansion of the individual-difference model, which accounts for time-varying factors.

Universal ingredients to parenting teens: parental warmth and autonomy support promote adolescent well-being in most families.

Even though each adolescent is unique, some ingredients for development may still be universal. According to Self-Determination Theory, every adolescent's well-being should benefit when parents provide warmth and autonomy. To rigorously test this idea that each family has similar mechanisms, we followed 159 Dutch parent-adolescent dyads (parent: Mage = 45.34, 79% mothers; adolescent: Mage = 13.31, 62% female) for more than three months, and collected 100 consecutive daily reports of parental warmth, autonomy support, positive and negative affect. Positive effects of parental warmth and autonomy support upon well-being were found in 91-98% of the families. Preregistered analysis of 14,546 daily reports confirmed that effects of parenting differed in strength (i.e., some adolescents benefited more than others), but were universal in their direction (i.e., in fewer than 1% of families effects were in an unexpected direction). Albeit stronger with child-reported parenting, similar patterns were found with parent-reports. Adolescents who benefited most from need-supportive parenting in daily life were characterized by higher overall sensitivity to environmental influences. Whereas recent work suggests that each child and each family have unique developmental mechanisms, this study suggests that need-supportive parenting promotes adolescent well-being in most families.

Assessing domain-general need fulfillment in children and adults: Introducing the General Need Satisfaction and Frustration scale.

Fulfillment of basic psychological needs has been postulated to be essential for mental health across the human life span. So far, validated domain-general instruments using the same items to assess these constructs in different age groups are lacking. To close this gap, we introduce the General Need Satisfaction and Frustration scale, a multidimensional instrument to capture fulfillment of the basic psychological needs for autonomy, competence, and relatedness in children and adults. The factor structure and correlates of this new instrument are examined in two cross-sectional studies with children (N = 185, age range = 7-14) and adults (N = 380, age range = 18-77), and one ambulatory assessment study with children (N = 84, age range = 8-10). Confirmatory factor analyses suggest adequate fit of the postulated six-dimensional measurement model (three needs, each split into satisfaction and frustration). Need satisfaction was linked to higher well-being, and need frustration was linked to higher ill-being in both children and adults. Findings suggest that the instrument introduced in this work is suitable to capture between-person differences as well as day-to-day fluctuations in the fulfillment of the basic needs for autonomy, competence, and relatedness in children and adults. The measurement instrument therefore is a useful tool to capture core ingredients for mental health in samples across a broad range of the human life span. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

The impact of session-introducing mindfulness and relaxation interventions in individual psychotherapy for children and adolescents: a randomized controlled trial (MARS-CA).

BACKGROUND: The investigation of mindfulness-based interventions (MBIs) in cognitive-behavioral therapy has greatly increased over the past years. However, most MBI research with youth focuses on structured, manualized group programs, conducted in school settings. Knowledge about the implementation and effects of MBIs in individual psychotherapy with children and adolescents is scarce. To fill this research gap, the "Mindfulness and Relaxation Study - Children and Adolescents" (MARS-CA) is designed. It aims to assess the effects of short session-introducing interventions with mindfulness elements on juvenile patients' symptomatic outcome and therapeutic alliance in individual child and adolescent psychotherapy. METHODS: MARS-CA is conducted at a university outpatient training center for cognitive-behavior therapy. Short session-introducing interventions with mindfulness elements will be compared to short session-introducing relaxation interventions and no session-introducing intervention to explore their effects on symptomatic outcome and therapeutic alliance. The session-introducing interventions will take place at the beginning of 24 subsequent therapy sessions. We hypothesize that patients' symptomatic outcome and therapeutic alliance improve more strongly in the mindfulness condition than in the other two conditions and that the mindfulness condition moderates the relationship between therapeutic alliance and symptomatic outcome. Patients and their trainee therapists will be randomized to one of the three treatment arms. Participants aged between 11 and 19 years and having a primary diagnosis of either a depressive disorder, an anxiety disorder, or a hyperkinetic disorder will be included. Therapeutic alliance will be assessed after every therapy session (therapy session 1 to therapy session 24), symptomatic outcome will be assessed before the start of treatment (pre), after the 3rd, the 10th, and the 17th therapy sessions, at the end of treatment (24th therapy session, post), and at a 6-month follow-up. Additionally, mindfulness and mindfulness-related measures as well as demographic data, adherence, allegiance, and therapeutic techniques will be assessed. It is our aim to assess a sample of 135 patients. We will conduct multilevel modeling to address the nested data structure. DISCUSSION: The study can provide information about how add-on MBIs, conducted by trainee therapists, influence therapeutic alliance and symptomatic outcome in individual psychotherapy in children and adolescents. TRIAL REGISTRATION: ClinicalTrials.gov NCT04034576. Registered on July 17, 2019.

Dynamic relations among COVID-19-related media exposure and worries during the COVID-19 pandemic.

OBJECTIVES: This study investigated how COVID-19-related media exposure during the COVID-19 crisis was related to same-day and next-day COVID-19-related worries. DESIGN: A 21-day diary study was conducted between late March and late April 2020 in Germany. MAIN OUTCOME MEASURES: Hypotheses were tested in a sample of 561 participants (Mage = 42.79, SDage = 6.12). Every evening, participants indicated their exposure to COVID-19-related media (e.g., TV, print, online) and their COVID-19-related worries. RESULTS: Same-day analyses showed that participants reported more COVID-19-related worries on days with higher exposure to COVID-19-related media. Dynamical structural equation models provided evidence for a reciprocal cycle across days: Higher media exposure at one day predicted higher worries the next day, and higher worries at one day also predicted higher media exposure the next day. Individuals with high trait anxiety reported an enhanced general level of media exposure during the 21 days of assessment, and individuals high in neuroticism and anxiety reported an enhanced level of worries. CONCLUSION: These findings suggest a self-reinforcing cycle whereby consuming crisis-related media and worrying reciprocally influence each other across days, possibly amplifying adverse effects of the COVID-19 crisis and other crises alike on mental and physical health.

Why do my thoughts feel so bad? Getting at the reciprocal effects of rumination and negative affect using dynamic structural equation modeling.

Rumination means to perseveratively think about one's negative feelings and problems. It is a response to affective distress that is often referred to as maladaptive emotion regulation. According to the response styles theory and control theory, rumination may further prolong and exacerbate affective distress. This means that rumination can be viewed as both an antecedent and an outcome of negative affect (NA), and vice versa. However, at the level of short-term dynamics, state rumination and NA have previously mainly been examined as two separate outcomes. To model the reciprocal within-person effects and hence, to match theoretical assumptions, we combined the two interrelated time series in one model using dynamic structural equation modeling (DSEM). Both effects (NA on subsequent rumination and rumination on subsequent NA) were modeled simultaneously while acknowledging the autoregressive nature of both states (inert properties). We used data from two experience sampling studies (NStudy 1 = 200 Belgian university students; NStudy 2 = 70 German university students). Participants were paged on smartphones several times a day (Study 1: 10; Study 2: 6) for several days (Study 1: 7; Study 2: 9-12). In both studies, we found evidence for reciprocal effects of NA and rumination, and both processes showed autoregressive relationships. Aside from central findings, higher levels of rumination were also associated with higher rumination inertia, pointing toward more habitual rumination also being associated with prolonged rumination. Together, using DSEM, we found reciprocal associations between rumination and NA, while providing new insights into the dynamics between the two processes. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Stressor anticipation and subsequent affective well-being: A link potentially explained by perseverative cognitions.

Anticipatory stress can prospectively and negatively influence diverse outcomes, including cognitive performance and emotional well-being. It has been suggested that perseverative cognitions (e.g., worry, rumination) during the anticipation period constitute a key mechanism driving these effects. The present study investigated the temporal dynamics among stressor anticipation, perseverative cognitions, and affective well-being. To accurately test the suggested mechanism, we focused on how these dynamics unfold within individuals over time. To that end, we analyzed data from an ecological momentary assessment study in an ethnically diverse sample (N = 243, 25-65 year olds, 68.7% Hispanic or non-Hispanic Black; 14 days, 5 measurement occasions per day) using dynamic structural equation modeling. Anticipating an upcoming stressor was linked to higher levels of perseverative cognitions approximately 3 hours later. At times when individuals reported higher levels of recent perseverative cognitions than typical for them, they also reported higher levels of negative affect and lower levels of positive affect. Mediational modeling indicated that perseverative cognitions accounted for the persistent effects of previous stressor anticipation on negative as well as positive affect several hours later. These findings suggest that perseverative cognitions may play an important role in explaining the detrimental effects of anticipatory stress on subsequent emotional well-being. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Women with abuse-related posttraumatic stress disorder sleep more fitfully but just as long as healthy controls: an actigraphic study.

STUDY OBJECTIVES: Subjective reports of sleep impairments are common in individuals with posttraumatic stress disorder (PTSD), but objective assessments of sleep have yielded mixed results. METHODS: We investigated sleep via actigraphy and e-diary on 6 consecutive nights in a group of 117 women with PTSD after childhood abuse (CA; PTSD group), a group of 31 mentally healthy women with a history of CA (healthy trauma controls, HTC group) and a group of 36 nontraumatized mentally healthy women (healthy controls, HC group). RESULTS: The PTSD group reported lower sleep quality, more nights with nightmares, and shorter sleep duration than both HTC and HC. Actigraphic measures showed more and longer sleep interruptions in the PTSD group compared to HTC and HC, but no difference in sleep duration. While the PTSD group underestimated their sleep duration, both HTC and HC overestimated their sleep duration. HTC did not differ from HC regarding sleep impairments. CONCLUSIONS: Sleep in women with PTSD after CA seems to be more fragmented but not shorter compared to sleep patterns of mentally healthy control subjects. The results suggest a stronger effect of PTSD psychopathology on sleep compared to the effect of trauma per se. SUBSET OF DATA FROM CLINICAL TRIAL: Treating Psychosocial and Neural Consequences of Childhood Interpersonal Violence in Adults (RELEASE), https://www.drks.de/drks_web/navigate.do?navigationId=trial.HTML&TRIAL_ID=DRKS00000000, German Clinical Trials registration number: DRKS00005578.

Distance learning, parent-child interactions, and affective well-being of parents and children during the COVID-19 pandemic: A daily diary study.

To slow down the spread of the COVID-19 virus, schools around the world were closed in early 2020, transferring children's scholastic activities to the homes and imposing a massive burden on parents and school-age children. Using data of a 21-day diary study conducted between March and April 2020 in Germany, this work examined whether (a) distance learning and (b) parents' involvement therein were associated with negative parent-child interactions and affective well-being of parents and children, over and above the effect of daily stressors. Participants were 562 parents (489 mothers, Mage = 42.79, SDage = 6.12, range = 25-63) most of whom were married (n = 382, 68.0%). They responded to the daily items with respect to the youngest child living in their household (Mage = 9.74, SDage = 2.81, range = 6-19). On days when children were working on school tasks, parents reported more negative parent-child interactions as well as lower parental and child positive affect and higher child negative affect, but not higher parental negative affect. Moreover, days when parents were more heavily involved in learning (i.e., when children worked less independently) were days with more negative parent-child interactions, lower parental and child positive affect, and higher parental and child negative affect. Negative parent-child interactions were linked to lower affective well-being of parents and children, and partially accounted for the relation among daily stressors and affective well-being. The present work highlights the need for measures to better support school-age children and their parents during distance learning. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

How to assess and interpret everyday life salivary cortisol measures: A tutorial on practical and statistical considerations.

Salivary cortisol has been the central marker in psychoneuroendocrinological stress research for three decades. Given the technological possibilities to assess data in ecologically valid circumstances, many studies have implemented longitudinal assessments of salivary cortisol in study participants' everyday life. Such studies bear the potential to understand real-life associations of cortisol with psychological traits, states, and health variables. Furthermore, changes in the neuroendocrine regulation and in cortisol reactivity can be used to evaluate the effects of behavioral interventions in real-life circumstances. While standardized paradigms have been developed to measure cortisol in laboratory settings, there is high heterogeneity in the assessment, statistical processing, and interpretation of everyday life cortisol measures. This methodological tutorial aims at summarizing important knowledge which had been accumulated during the past two decades and which could be used to set up an ambulatory assessment study focusing on salivary cortisol in everyday life. Practical advice for possible strategies at all stages of the research process is outlined in detail. Additionally, an example on how to statistically process cortisol data in a multilevel framework (including syntax) is provided. In these analyses, we investigate within- and between-person research questions regarding the association between stress and cortisol in daily life. Thus, the present work (a) can be used as tutorial for setting up everyday life studies focusing on the assessment of salivary cortisol, and (b) can be useful to avoid inconsistencies in study planning, data assessment and data processing in future studies.