The Brief Solastalgia Scale: A Psychometric Evaluation and Revision.

Witnessing degradation and loss to one's home environment can cause the negative emotional experience of solastalgia. We review the psychometric properties of the 9-item Solastalgia subscale from the Environmental Distress Scale (Higginbotham et al. (EcoHealth 3:245-254, 2006)). Using data collected from three large, independent, adult samples (N = 4229), who were surveyed soon after the 2019/20 Australian bushfires, factor analyses confirmed the scale's unidimensionality, while analyses derived from Item Response Theory highlighted the poor psychometric performance and redundant content of specific items. Consequently, we recommend a short-form scale consisting of five items. This Brief Solastalgia Scale (BSS) yielded excellent model fit and internal consistency in both the initial and cross-validation samples. The BSS and its parent version provide very similar patterns of associations with demographic, health, life satisfaction, climate emotion, and nature connectedness variables. Finally, multi-group confirmatory factor analysis demonstrated comparable construct architecture (i.e. configural, metric, and scalar invariance) across validation samples, gender categories, and age. As individuals and communities increasingly confront and cope with climate change and its consequences, understanding related emotional impacts is crucial. The BSS promises to aid researchers, decision makers, and practitioners to understand and support those affected by negative environmental change.

COVID-19 infection associated with poorer mental health in a representative population sample.

OBJECTIVE: There is limited evidence of the direct effects of COVID-19 infection on mental health, and whether these are influenced by vaccination or physical health symptoms. We aimed to investigate the relationships of COVID-19 infection, current symptom presentation, and vaccination status with mental health symptoms in adults. STUDY DESIGN AND SETTING: A cross-sectional sample of the Australian adult population that was representative by age, gender, and location was recruited through market research panels (N = 1407, 51.3% female, mean age 47.9 years). Hierarchical regression analyses were used to examine the associations of COVID-19 infection history and current COVID-19 symptoms with symptoms of depression (Patient Health Questionnaire-9), generalized anxiety (Generalized Anxiety Disorder-7) and social anxiety (Mini-Social Phobia Inventory). RESULTS: COVID-19 infection was associated with significantly higher depression and anxiety symptoms, but only in those who were not fully vaccinated. Current experience of COVID-related symptoms was associated with significantly higher depression and anxiety symptoms, and attenuated the direct effect of infection on mental health outcomes to non-significance. CONCLUSION: COVID-19 infection may be associated with increased mental health symptoms. However, the effects of infection on mental health were primarily evident in those who were not fully vaccinated and were explained by greater physical health problems associated with COVID-19 infection. The findings reinforce the efficacy of vaccination for reducing physical and mental health symptoms following infection.

An investigation of the dual continua model of mental health in the context of eating disorder symptomatology using latent profile analysis.

OBJECTIVE: The dual continua model of mental health suggests that mental well-being and mental illness are two distinct continua that are interrelated in their contributions to overall mental health. This study investigated the dual continua model in individuals with eating disorder symptoms. METHOD: Female university students (N = 346) completed measures of mental well-being, eating disorder symptomatology, clinical impairment and psychological distress. Confirmatory factor and latent profile analyses were used to derive underlying mental health profiles. RESULTS: Results revealed two oblique factors representing the mental well-being and eating disorder symptomatology constructs and four unique mental health profiles that were partially consistent with the dual continua model emerged: 'flourishing', 'vulnerable', 'partially symptomatic and content', and 'languishing'. The derived mental health profiles had unique characteristics described by psychological distress and clinical impairment. CONCLUSIONS: The results did not provide conclusive evidence for the dual continua model as they could also be interpreted in a manner consistent with the unidimensional approach. While the dual continua model is a promising avenue to understand mental health in a way that looks beyond symptoms, these results caution against its rapid adoption and encourage future research to understand how eating disorder symptomatology and positive mental health assets contribute to overall mental health.

Estimating statistical power for ERP studies using the auditory N1, Tb, and P2 components.

The N1, Tb, and P2 components of the event-related potential (ERP) are thought to reflect the sequential processing of auditory stimuli in the human brain. Despite their extensive use in biological, cognitive, and clinical neuroscience, there are no guidelines for how to appropriately power ERP studies using these components. In the present study, we investigated how the number of trials, number of participants, effect magnitude, and study design influenced statistical power. Using Monte Carlo simulations of ERP data from a passive listening task, we determined the probability of finding a statistically significant effect in 58,900 experiments repeated 1,000 times each. We found that as the number of trials, number of participants, and effect magnitude increased, so did statistical power. We also found that increasing the number of trials had a bigger effect on statistical power for within-subject designs than for between-subject designs, and that within-subject designs required a smaller number of trials and participants to provide the same level of statistical power for a given effect magnitude than between-subject designs. These results show that it is important to carefully consider these factors when designing ERP studies, rather than relying on tradition or anecdotal evidence. To improve the robustness and reproducibility of ERP research, we have built an online statistical power calculator (https://bradleynjack.shinyapps.io/ErpPowerCalculator), which we hope will allow researchers to estimate the statistical power of previous studies, as well as help them design appropriately-powered studies in the future.

Love and affectionate touch toward romantic partners all over the world.

Touch is the primary way people communicate intimacy in romantic relationships, and affectionate touch behaviors such as stroking, hugging and kissing are universally observed in partnerships all over the world. Here, we explored the association of love and affectionate touch behaviors in romantic partnerships in two studies comprising 7880 participants. In the first study, we used a cross-cultural survey conducted in 37 countries to test whether love was universally associated with affectionate touch behaviors. In the second study, using a more fine-tuned touch behavior scale, we tested whether the frequency of affectionate touch behaviors was related to love in romantic partnerships. As hypothesized, love was significantly and positively associated with affectionate touch behaviors in both studies and this result was replicated regardless of the inclusion of potentially relevant factors as controls. Altogether, our data strongly suggest that affectionate touch is a relatively stable characteristic of human romantic relationships that is robustly and reliably related to the degree of reported love between partners.

Dimensional models of personality disorders: Challenges and opportunities.

Categorical models of personality disorders have been beneficial throughout psychiatric history, providing a mechanism for organizing and communicating research and treatment. However, the view that individuals with personality disorders are qualitatively distinct from the general population is no longer tenable. This perspective has amassed steady criticism, ranging from inconsequential to irreconcilable. In response, stronger evidence has been accumulated in support of a dimensional perspective that unifies normal and pathological personality on underlying trait continua. Contemporary nosology has largely shifted toward this dimensional perspective, yet broader adoption within public lexicon and routine clinical practice appears slow. This review focuses on challenges and the related opportunities of moving toward dimensional models in personality disorder research and practice. First, we highlight the need for ongoing development of a broader array of measurement methods, ideally facilitating multimethod assessments that reduce biases associated with any single methodology. These efforts should also include measurement across both poles of each trait, intensive longitudinal studies, and more deeply considering social desirability. Second, wider communication and training in dimensional approaches is needed for individuals working in mental health. This will require clear demonstrations of incremental treatment efficacy and structured public health rebates. Third, we should embrace cultural and geographic diversity, and investigate how unifying humanity may reduce the stigma and shame currently generated by arbitrarily labeling an individual's personality as normal or abnormal. This review aims to organize ongoing research efforts toward broader and routine usage of dimensional perspectives within research and clinical spaces.

Do emotion intensity, variability, differentiation, co-occurrence, and positive-negative ratios make unique contributions to predicting longitudinal change in psychological distress and well-being?

A burgeoning array of affective indices are proposed to capture features of affect that contribute to mental health and well-being. However, because indices are often investigated separately, it is unclear what-if any-unique role they have. The present study addresses this question in a high-stress naturalistic context by prospectively testing the relative contributions of eight affective indices to psychological outcomes during the first acute lockdown phase of the COVID-19 pandemic. Across six fortnightly waves of data collection, participants (N = 613, aged 19 to 87 years) reported how much they experienced five positive and five negative emotions in response to images showing the health and social impacts of the pandemic. We used these ratings to calculate participant-level indices of intensity, variability, and differentiation for positive and negative emotions separately, and positive-negative co-occurrence and ratios. Psychosocial outcome measures were general psychological distress, loneliness, work, and social impairment specifically due to the pandemic, well-being, and coping. On average, psychosocial functioning improved across the lockdown period, and, for most affective indices, bivariate relationships with psychosocial functioning supported existing theory and empirical work. However, multiple regression analyses suggested that the contributions of the individual indices were rarely unique, with most of the change in psychosocial functioning over time being explained by affect intensity and variability. These findings highlight that affective indices should be studied in concert to build a comprehensive and integrated understanding of their role in mental health and well-being. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

A three-dimensional model of emotional display rules: Model invariance, external validity, and gender differences.

In this foundational study, we test display rules for a set of 24 theoretically derived emotions to discover the key emotional dimensions underlying this important construct. Participants (Sample 1 [exploratory factor analysis, EFA] N = 339, 18-77 years; Sample 2 [confirmatory factor analysis, CFA] N = 477, 20-81 years) rated how important it was to control expressions of each emotion for them personally (self-rules). Sample 1 also gave ratings for other people (men-rules and women-rules). EFA revealed a three-dimensional (3D) structure, comprising emotions that have harmonious/affiliative (e.g., happiness, sympathy), vulnerable (e.g., sadness, shame), and disharmonious/dominant (e.g., anger, contempt) social implications. CFA confirmed the 3D model fit the data well, and demonstrated invariance between the two samples; men and women; different stages of the adult life span; and the three rule-types. The model also demonstrated good internal consistency and external validity via associations with individual differences in emotion regulation, emotion beliefs, and social anxiety. We then used the model to investigate theorized gender differences in display rules. Men's and women's self-rules did not differ, aligning with several previous studies. However, significant within-gender differences emerged across the three rule-types: Men believed it was more important for them and other men to control their expressivity than for women to, while women believed it was more important for them personally to control their expressivity than for everyone else to, including other women. Overall, our findings establish a novel model that highlights the social motivations underlying emotional display rules, paving the way for new understanding across contexts, cultural groups, and individuals. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Development of a Scale to Examine Responses to Bodily Sensations.

OBJECTIVE: Individual differences in the perception of bodily sensations is known to be associated with affective symptomatology. However, the way people psychologically respond to everyday bodily sensations has not been examined in a systematic and balanced way. Thus, we developed the Bodily Sensations Response Scale (BSRS) to evaluate participants' self-reported cognitive, emotional, and behavioral responses to their bodily sensations. We investigated the scale's factor structure and its psychometric properties in two studies. METHOD: In Study 1, 297 participants completed the 50-item BSRS and exploratory factor analysis (EFA) was performed on the responses. In Study 2 (N = 284), confirmatory factor analysis (CFA) was used to confirm the factor structure of the 32-item BSRS identified in Study 1. RESULTS: In Study 1, the EFA identified a 32-item three-factor solution as the best fit for the data. Factor 1 described a defeat response to bodily sensations, Factor 2 described an acceptance response, and Factor 3 described a sensitization response. In Study 2, the three-factor solution was shown not to be parsimonious. Rather, CFA identified that the 27-item BSRS had two interpretable factors (Defeat and Acceptance) that explained participants' psychological responses to bodily sensations. The Defeat subscale was moderately to strongly correlated with awareness of bodily sensations (i.e., Body Perception Questionnaire-Short Form scores) and depression, anxiety, and stress symptom severity (i.e., Depression Anxiety Stress Scales-21 scores), whereas the Acceptance subscale was unrelated or only slightly negatively correlated to awareness of bodily sensations and depression, anxiety, and stress symptoms. CONCLUSION: The 27-item BSRS provides a psychometrically robust assessment of the way in which people psychologically respond to everyday bodily sensations. The measure can assist researchers to better understand how people psychologically process their salient bodily sensations and how this is linked to psychopathology.

Measuring social processes regarding eating, physical activity, and weight in higher-weight people: the weight-related interactions scale (WRIS).

PURPOSE: This study sought to develop a psychometrically sound measure to assess effective and ineffective forms of input from others regarding eating, physical activity, and weight in higher-weight people, namely, the Weight-Related Interactions Scale (WRIS). METHODS: Participants (n = 736) were adults in the overweight/obese weight ranges who completed the WRIS and measures of weight-specific social support, emotional eating, weight stigma, eating-specific self efficacy, and social desirability. RESULTS: Exploratory and confirmatory factor analyses of the WRIS supported a three-factor solution of 'Criticism', 'Minimization', and 'Collaboration' as forms of weight-related input from others. Support was found for the reliability and the concurrent, convergent, and divergent validity of the WRIS. CONCLUSIONS: The WRIS is a promising new instrument for comprehensively assessing the input of others in relation to eating, physical activity, and weight among higher-weight individuals. LEVEL OF EVIDENCE: Level III. Evidence obtained from well-designed cohort or case-control analytic studies.

Two-dimensional Machiavellianism: Conceptualization, theory, and measurement of the views and tactics dimensions.

For over 45 years, research investigating Machiavellianism has largely used the same unidimensional approach, even though empirical research demonstrates that Machiavellianism is comprised of 2 robust dimensions: views and tactics. This article elaborates on the theory and conceptualization behind the 2 dimensions. It also documents the construction and validation of the 12-item Two-Dimensional Machiavellianism Scale (TDMS), which measures the cynical and untrusting views dimension, and the immoral interpersonal tactics dimension, across 6 samples (N = 3,886, 37.70% men) using confirmatory factor analysis (CFA) and item response theory. The 2-factor structure fitted the data well based on CFA, and was invariant across samples, gender, and over a 3-month period (N = 338, 36.39% men). Evidence of each subscale's construct validity was established using structural equation modeling. As expected, the Views subscale was primarily associated with misanthropy, hypersensitive narcissism, lower subjective well-being, and lower emotional stability. The Tactics subscale was primarily associated with psychopathy, lower conscientiousness, lower willingness to reciprocate, and "ends justified the means" behavior in ethical dilemmas. The TDMS enhances practical and conceptual understanding of Machiavellianism through demarcating the underlying motivations and addresses the need for an updated and psychometrically sound measure of Machiavellianism. (PsycINFO Database Record (c) 2020 APA, all rights reserved).