Conceptual analysis and special-interest science: toxicology and the case of Edward Calabrese

One way to do socially relevant investigations of science is through conceptual analysis of scientific terms used in special-interest science (SIS). SIS is science having welfare-related consequences and funded by special interests, e.g., tobacco companies, in order to establish predetermined conclusions. For instance, because the chemical industry seeks deregulation of toxic emissions and avoiding costly cleanups, it funds SIS that supports the concept of “hormesis” (according to which low doses of toxins/carcinogens have beneficial effects). Analyzing the hormesis concept of its main defender, chemical-industry-funded Edward Calabrese, the paper shows Calabrese and others fail to distinguish three different hormesis concepts, H, HG, and HD. H requires toxin-induced, short-term beneficial effects for only one biological endpoint, while HG requires toxin-induced, net-beneficial effects for all endpoints/responses/subjects/ages/conditions. HD requires using the risk-assessment/regulatory default rule that all low-dose toxic exposures are net-beneficial, thus allowable. Clarifying these concepts, the paper argues for five main claims. (1) Claims positing H are trivially true but irrelevant to regulations. (2) Claims positing HG are relevant to regulation but scientifically false. (3) Claims positing HD are relevant to regulation but ethically/scientifically questionable. (4) Although no hormesis concept (H, HG, or HD) has both scientific validity and regulatory relevance, Calabrese and others obscure this fact through repeated equivocation, begging the question, and data-trimming. Consequently (5) their errors provide some undeserved rhetorical plausibility for deregulating low-dose toxins.     

Psychophysiological Synchrony During Verbal Interaction in Romantic Relationships

Previous studies about romantic relationships have shown that the reciprocal influence between partners occurs not only at the behavioral and socio‐emotional levels, but also at the psychophysiological level. This reciprocal influence is expressed in a pattern of physiological synchrony between partners (i.e., coordinated dynamics of the physiological time series). The main aim of the present study was to explore the presence of a pattern of physiological synchrony in electrodermal activity (EDA) during a couple interaction task. A second objective was to compare the synchrony levels during a negative interaction condition versus a positive interaction condition. Finally, we analyzed the association between synchrony and self‐perception of empathy, dyadic empathy, and relationship satisfaction. Thirty‐two couples (64 individuals) participated in this study. Each couple performed a structured interaction task while the EDA of both partners was being registered. The quantification of synchrony was based on the cross‐correlation of both members' EDA time‐series. In order to control for coincidental synchrony, surrogate datasets were created by repeatedly shuffling the original data of spouses X and Y of a dyad and computing synchronies on the basis of the shuffled data (pseudosynchrony values). Our results confirmed the presence of significant EDA synchrony during the interaction. We also found that synchrony was higher during the negative interactions relative to the positive interactions. Additionally, physiological synchrony during positive interaction was higher for those couples in which males scored higher in dyadic empathy. The clinical implications of these findings are discussed.     

Linking Birth Order to Political Leadership: The Impact of Parents or Sibling Interaction?

Despite mounting evidence that first-born children are overrepresented among incumbents in political office, there is no consensus about the cause of this overrepresentation. Some stress the impact of differential parenting, arguing that the first-born receive a larger share of parental resources and have a greater need to live up to parental expectations. Others emphasize the interaction among siblings, arguing that first-born children are better prepared for power struggles, having experience both as followers and as leaders within the family. This study, using birth-order data for nearly 1,200 incumbents in various offices in local and national politics in the Netherlands, found more support for the parental impact perspective. Singletons were also overrepresented among incumbents, whereas middle-born children were underrepresented. The data suggest that this birth-order effect is weaker among younger generations and is more pronounced among women.     

Use of Brief Experimental Analyses in Outpatient Clinic and Home Settings

We describe the historic and current use of brief experimental analysis procedures in outpatient clinic and home settings. We discuss some applications of the designs and suggest design modifications for improving internal validity. We describe our application of the designs to longitudinal, in-home programs for children with severe behavior disorders and demonstrate how related versions of brief experimental analysis procedures can be linked to form a more comprehensive evaluation.     

The dynamic relationship between performance feedback, trust, and conflict in groups: A longitudinal study

Moderate task conflict has generally been associated with higher group performance, and relationship conflict associated with lower performance. Past studies have most often discussed their findings as though differences in level of intragroup conflict cause differences in group performance—rather than testing the additional possibility that reported group conflict is a reaction to feedback on past group performance. This paper explores the dynamic relationships between intragroup conflict and performance with a longitudinal design. Results from 67 groups suggest that initial performance feedback to groups can have significant consequences for future team interaction. We find evidence to suggest that, (a) negative initial group performance feedback results in later increases in both task and relationship conflict, but that (b) groups with high early intragroup trust are buffered from experiencing the worst of future relationship conflict.     

The effects of social belonging and kindness on stress and well-being during the COVID-19 pandemic: A longitudinal experiment

Because the ongoing COVID-19 pandemic has introduced significant stressors to people's lives, more research on self-directed strategies to cope with pandemic-related stress is needed. In the current longitudinal experiment (N = 614), we investigated the emotional benefits of two self-directed strategies—belonging affirmation and recalling kindness—during the Delta (October 2021) and Omicron (February 2022) waves of the pandemic. Participants were randomly assigned to one of three activity conditions (belonging affirmation, recalling kindness, or control), which they performed weekly for 4 weeks. Contrary to our pre-registered hypothesis, belonging affirmation and recalling kindness did not promote greater well-being overall; however, belonging affirmation led to well-being improvements indirectly via increases in positive emotions. Furthermore, the benefits of belonging affirmation were moderated by pandemic wave. That is, during the Omicron wave, but not the Delta wave, belonging affirmation led to improved life satisfaction, positive emotions, and connectedness, decreased loneliness and negative emotions, and marginally reduced perceived stress and anxiety. These results provide preliminary evidence for the well-being benefits of belonging affirmation and suggest the importance of evaluating coping strategies throughout different stages of a long-term stressor.     

The effects of presession exposure to attention on the results of assessments of attention as a reinforcer

The effects of presession exposure to attention on responding during subsequent assessments of attention as a reinforcer were evaluated across three behavioral assessments. In Experiment 1, a contingent attention assessment condition was preceded by either a noncontingent attention condition (free play) or a contingent escape condition. In Experiment 2, a diverted attention with extinction condition was preceded by either an alone or a free-play condition. In Experiment 3, a two-choice preference assessment was preceded by either 10 min of free play or 10 min of playing alone. In each experiment, the participant responded differentially within the test condition according to the presence or absence of dense schedules of attention immediately prior to that condition. The results of this study show that events occurring immediately prior to an assessment condition can influence behavior within the assessment.     

When confessing sin feels good

This paper draws on a qualitative study of how young people engaged in two youth ministries in the Church of Norway reflect on sin and shame in relation to their existential dilemmas . The authors analyze this practice through the lens of Hartmut Rosa's concept of resonance, arguing that there is consonance between how young people in the study express shame and the Lutheran understanding of sin as being curved in on oneself. Both sin and shame prevent the subject from being open to the world, thus constituting resistance to resonance. Yet, the practice of confessing sin may be a remedy to this closing in on oneself, as confession affords a resonant space, countering feelings of existential inadequacy caused by both sin and shame. Bringing the concept of vulnerability into the discussion, the paper further argues that confessing sin may prove healing and liberating also for experiences of shame as long as it does not violate the subject's ability to speak with her own voice or involve harmful god-images or harmful power dynamics.     

Reward prospect interacts with trial-by-trial preparation for potential distraction

When attending for impending visual stimuli, cognitive systems prepare to identify relevant information while ignoring irrelevant, potentially distracting input. Recent work showed that a supramodal distracter-filtering mechanism is invoked in blocked designs involving expectation of possible distracter stimuli, although this entails a cost (distraction-filtering cost) on speeded performance when distracters are expected but not presented. Here we used an arrow-flanker task to study whether an analogous cost, potentially reflecting the recruitment of a specific distraction-filtering mechanism, occurs dynamically when potential distraction is cued trial-to-trial (cued distracter-expectation cost). In order to promote the maximal utilization of cue information by participants, in some experimental conditions the cue also signalled the possibility of earning a monetary reward for fast and accurate performance. This design also allowed us to investigate the interplay between anticipation for distracters and anticipation of reward, which is known to engender attentional preparation. Only in reward contexts did participants show a cued distracter-expectation cost, which was larger with higher reward prospect and when anticipation for both distracters and reward were manipulated trial-to-trial. Thus, these results indicate that reward prospect interacts with the distracter expectation during trial-by-trial preparatory processes for potential distraction. These findings highlight how reward guides cue-driven attentional preparation.     

Psychological and Physical Characteristics of U.S. Marine Recruits

This study examined psychological and physical health factors in a cohort of U.S. Marine recruits with the goal of developing a comprehensive understanding of attributes recruits bring to training. 1,350 male recruits completed a multimeasure survey during the first week of training. A 2-way multivariate analysis of variance (MANOVA) was conducted to explore the relationship of hardiness dimensions on several psychological and physical factors. Compared with other military samples, this cohort reported similar levels on hardiness control and rigidity subscales. Recruits who reported higher scores on a measure of positive hardiness also reported higher scores on measures of grit, grit ambition, sensation seeking, training expectations, positive ways of coping, physical and mental health, fitness scores, and lower scores on a measure of depression. This study provides a more complete understanding of the complex array of attributes of Marine recruits and forms a foundation for predictive models of injury risk and/or attrition.