Do individuals flexibly and adaptively calibrate their motivation, thoughts, feelings, and behaviors in response to changing ecological opportunities and threats? Using a longitudinal six-wave survey data set collected during the COVID-19 pandemic, the study addresses three research questions: are some psychological features or characteristics more or less likely to be calibrated in response to environmental change, are certain types of people more sensitive to these ecological changes, and do individuals become more sensitized or habituated to these changes over time? The results demonstrate that individuals can flexibly adjust their psychology directly relevant to managing COVID-19 infection: people were more strongly motivated to avoid disease and perceived that they were more vulnerable to COVID-19 infection during periods when the threat of COVID-19 infection was high. Political liberals were particularly sensitive to ecological infection changes in adjusting their disease avoidance motivation. Importantly, the study also found a significant quadratic effect of COVID-19 cases on disease avoidance motivation, perceived COVID vulnerability, and preventative behaviors. This indicates that the effect of COVID-19 cases was especially pronounced during the early phase of the pandemic when new cases were relatively low, but diminished as time passed and new cases increased. These findings highlight the adaptive nature of human behavior in response to changing environmental circumstances and underscore the importance of considering both individual and contextual factors in understanding psychological flexibility.

Infectious disease presents a serious threat to our fitness. The biological immune system provides several mechanisms for dealing with this threat. So too does another system: the behavioral immune system. This second system is proposed to consist of a set of evolved cognitive, affective, and behavioral strategies for reducing the likelihood of infection, including xenophobia, traditionalism, and food neophobia. In the present work, I investigate how another suite of fairly novel culturally-learned disease avoidance strategies, namely hygiene behaviors and knowledge of germ theory, are related to the behavioral immune system. Across two studies, I find that individuals who engage in more hygiene behaviors show less evidence of reliance on several elements of the behavioral immune system (i.e., xenophobia, traditionalism, food neophobia). Similarly, individuals who know more about germ theory show less engagement in behavioral immune system components. These findings suggest that effective cultural strategies for avoiding infectious disease may supplant older, evolved psychological strategies with the same purpose.

In most of the work using event-related potentials (ERPs), researchers presume the function of specific components based on the careful manipulation of experimental factors, but rarely report direct evidence supporting a relationship between the neural signal and other outcomes. Perhaps most troubling is the lack of evidence that ERPs correlate with related behavioral outcomes which should result, at least in part, from the neural processes that ERPs capture. One such example is the NoGo-N2 component, an ERP component elicited in Go/NoGo paradigms. There are two primary theories regarding the functional significance of this component in this context: that the signal represents response inhibition and that the component reflects conflict. In this paper, a trial-level method of analysis for the relationship between ERP component potentials and downstream behavioral outcomes (in this case, response accuracy) using a multi-level modeling framework is proposed to provide discriminatory evidence for one of these theories. Following a description of the research on the NoGo-N2, preliminary data supporting the conflict monitoring theory are presented, noting important limitations. Next, an EEG simulation study is presented in which NoGo-N2 data are generated with a known relationship to fabricated reaction time data, showing that, with added levels of complexity and noise within the data, the MLM approach is consistently successful at extracting the known relationships that occur in real NoGo-N2 data. Next, using independent components analysis (ICA) to extract spatiotemporal components that best represent the signal of interest, a well-powered analysis of the relationship between the NoGo-N2 and response accuracy is used to provide strong discriminatory evidence for the conflict monitoring theory of the NoGo-N2. Finally, implications for the NoGo-N2, as well as all ERP components, are discussed with a focus on how this approach can and should be used. the paper concludes with potential expansions of this approach to areas beyond identifying the function of ERP components.

Past research has focused on the important role humor plays in interpersonal relationships; however, researchers have also identified intrapersonal applications of humor, showing that people often use humor to alleviate negative affect, and that humor has generally been found to beneficially influence mental health. The purpose of this study is to examine whether humor-based coping can be utilized as an intrapersonal tool to aid or facilitate creative thinking and problem solving when faced with a distressing situation. The current study posits reduced rumination as the mechanism by which humor facilitates creativity. To measure creativity, a task was devised that had individuals brainstorm under some distress; participants were asked to recall and describe an ongoing, unresolved problem they were facing, followed by a rumination induction, as rumination is characterized by perseverative thoughts that hinder constructive action. After the rumination induction, participants were randomly assigned to a control condition or either of two emotion regulation conditions: positive reappraisal or humor-based reappraisal. Following this, participants were asked to complete an “alternate solutions” task, based on Guilford’s Alternate Uses Task, generating solutions for their own unresolved problem. Results of the study showed that the use of humor was indeed related to a decrease in rumination, but that the humor condition did not outperform either control condition on any measure of creativity (performing worse in some cases). Limits of this study and future directions are discussed.