Social impediments to meat-eaters' adherence to critical calls for a meat-free diet: An experimental test of social norm and message source effects.

Reducing meat consumption is highly effective for reducing personal carbon emissions, yet most people in Western nations still eat meat. We build on recent research highlighting that group boundaries may impede dietary change by (a) promoting pro-meat norms and (b) prohibiting critical calls for a veg* diet (vegetarian and vegan, i.e., meat-free). Past research relied on self-reports and behavioural measures of engagement, leaving open whether these effects extend to food consumption settings and ad-hoc meal choice. We conducted two pre-registered experiments in which meat-eaters read critical calls to adopt a veg* diet, either by a vegan (outgroup) or a meat-eater (ingroup). In Experiment 2, participants moreover read an article either highlighting a veg* or a meat-eating norm. We then assessed actual (Experiment 1) or hypothetical (Experiment 2) meal choice as dependent variables. As predicted, intergroup criticism (i.e., voiced by veg*s) consistently led to message rejection in comparison to the same criticism voiced by meat eaters, but we did not observe effects on meal choice. Norms neither had a main nor interaction effect on self-reports and behaviour. We discuss potential intermediary processes between engagement with and adoption of a vegan diet and derive evidence-based recommendations for constructive communication across group boundaries.

Respecting Conversational Norms Improves Reception of Expert Messages Among Unvaccinated Individuals.

The association of medical experts with politically left-leaning cities and states early in the COVID-19 pandemic may have exacerbated vaccine hesitancy in right-leaning states of the US. Criticism from outside experts violates rules of communication between social groups (i.e. an intergroup sensitivity effect), leading to rejection of messages promoting vaccine safety and efficacy. In two studies, we document the effects of shared geographical group membership for medical expert messages promoting vaccination. We also found evidence that satisfying conversational norms against intergroup criticism reduces message rejection. Specifically, an invitation from ingroup political elites for a doctor to speak reduced the negative effects of unshared group identity.

What Motivates the Vaccination Rift Effect? Psycho-Linguistic Features of Responses to Calls to Get Vaccinated Differ by Source and Recipient Vaccination Status.

Although vaccination provides substantial protection against COVID, many people reject the vaccine despite the opportunity to receive it. Recent research on potential causes of such vaccine hesitancy showed that those unvaccinated rejected calls to get vaccinated when they stemmed from a vaccinated source (i.e., a vaccination rift). To mend this vaccination rift, it is key to understand the underlying motivations and psychological processes. To this end, we used the voluntary free-text responses comprised of 49,259 words from the original Austrian large-scale data-set (N = 1170) to conduct in-depth psycho-linguistic analyses. These findings indicate that vaccinated message sources elicited longer responses using more words per sentence and simpler language writing more about things rather than themselves or addressing others directly. Contrary to common assumptions, expressed emotions or indicators of cognitive processing did not differ between message source conditions, but vaccinated sources led to more achievement-related expressions. Participant vaccination did not moderate the observed effects but had differential main effects on psycho-linguistic response parameters. We conclude that public vaccination campaigns need to take the vaccination status of the message source and other societal rifts into account to bolster recipients' achievement.

The vaccination rift effect provides evidence that source vaccination status determines the rejection of calls to get vaccinated.

COVID vaccination protects individuals and helps end the pandemic, but a sizable minority in Western countries rejects the vaccine. Vaccination status should serve as a group membership, critical communication between groups undermines trust, and we accordingly suggest that calls to get vaccinated by vaccinated sources lead to defensive rejection instead of desired behavior change. We term this the vaccination rift effect. A unique collaboration with national print, online and TV news media yielded a large (N = 1170), age-representative sample of Austrian citizens for our fully randomized experiment. Participants exhibited the vaccination rift: They ascribed less constructive motives, d = 0.28, 95% CI [0.17; 0.40], experienced more threat, d = - 0.30, 95% CI [- 0.42; - 0.19], and ascribed worse personality characteristics to vaccinated (vs. unvaccinated) commenters, d = 0.17, 95% CI [0.06; 0.29]. Constructiveness consistently predicted behavioral measures of counterarguing and vaccination planning (indirect effects B = 0.033, SE = 0.013 and B = - 0.056, SE = 0.014). The vaccination rift was substantially stronger among the critical group of unvaccinated participants, ds = |0.39-0.52|, than among those fully vaccinated, ds = |0.08-0.17|. We discuss how to apply these psychological mechanics of the vaccination rift to public campaigns.

"The ship is sinking, yet the band plays on": COVID-19 and academia.

Objective: Researchers sought to examine experiences of stress, mental health, and work outcomes for those in higher education during the COVID-19 pandemic. Participants: Graduate students and professors completed an online survey in June 2020 (N = 1,794). Methods: Participants completed measures of stress, depression, and anxiety as well as items related to work quality, productivity, and fulfillment. Results: 70% of graduate students reported higher than normal levels of anxiety, depression, and stress according to the DASS-21. Nearly half of professors reported higher than normal levels of anxiety, depression, and stress. Multiple linear regression analyses found that higher levels of work fulfillment predicted greater productivity (f2grad = .15; f2prof = .08) and quality of work (f2grad = .10; f2prof = .12). Conclusions: Individuals in higher education are struggling with their mental health and considerations need to be made to help this group. Additionally, we discuss the implications of self-determination theory on work fulfillment.

Why punish critical outgroup commenters? Social identity, general norms, and retribution.

Group members are more likely to punish criticism of the ingroup when it is provided by outgroup members than by fellow ingroup members. Although this effect could reflect a response to threats to social identity, there may be a general conversational norm proscribing intergroup criticism of any kind. In this case, uninvolved bystanders should also punish individuals who criticize other groups. Past studies of these effects have largely relied on self-reports, making it unclear which theoretical account best explains punishment behaviour. Additionally, the motives underlying punishment of intergroup criticism have not been systematically investigated. Punishment could be intended to inform the commenter that such criticism is inappropriate (i.e., a consequentialist motive) or simply enact revenge (i.e., a retributionist motive). We conducted a registered experiment (N > 800) to examine whether (1) uninvolved bystanders punish intergroup criticism as much as intergroup criticism of their own group, and (2) punishment of intergroup criticism is motivated by consequentialist or retributionist motives. Results revealed more negative reactions to and greater punishment of intergroup criticism compared to intragroup criticism. These effects were actually stronger when the participant was a bystander compared with a member of the targeted group. This finding strongly supports the existence of a conversational norm proscribing intergroup criticism. Protection of social identity resulted in more negative reactions to and punishment of any criticism targeting the ingroup, independent of the source. Finally, punishment extended to situations in which the commenter did not learn of the punishment, consistent with a retributionist motive.

User Experience With Dynamic Difficulty Adjustment Methods for an Affective Exergame: Comparative Laboratory-Based Study.

BACKGROUND: In affective exergames, game difficulty is dynamically adjusted to match the user's physical and psychological state. Such an adjustment is commonly made based on a combination of performance measures (eg, in-game scores) and physiological measurements, which provide insight into the player's psychological state. However, although many prototypes of affective games have been presented and many studies have shown that physiological measurements allow more accurate classification of the player's psychological state than performance measures, few studies have examined whether dynamic difficulty adjustment (DDA) based on physiological measurements (which requires additional sensors) results in a better user experience than performance-based DDA or manual difficulty adjustment. OBJECTIVE: This study aims to compare five DDA methods in an affective exergame: manual (player-controlled), random, performance-based, personality-performance-based, and physiology-personality-performance-based (all-data). METHODS: A total of 50 participants (N=50) were divided into five groups, corresponding to the five DDA methods. They played an exergame version of Pong for 18 minutes, starting at a medium difficulty; every 2 minutes, two game difficulty parameters (ball speed and paddle size) were adjusted using the participant's assigned DDA method. The DDA rules for the performance-based, personality-performance-based, and all-data groups were developed based on data from a previous open-loop study. Seven physiological responses were recorded throughout the sessions, and participants self-reported their preferred changes to difficulty every 2 minutes. After playing the game, participants reported their in-game experience using two questionnaires: the Intrinsic Motivation Inventory and the Flow Experience Measure. RESULTS: Although the all-data method resulted in the most accurate changes to ball speed and paddle size (defined as the percentage match between DDA choice and participants' preference), no significant differences between DDA methods were found on the Intrinsic Motivation Inventory and Flow Experience Measure. When the data from all four automated DDA methods were pooled together, the accuracy of changes in ball speed was significantly correlated with players' enjoyment (r=0.38) and pressure (r=0.43). CONCLUSIONS: Although our study is limited by the use of a between-subjects design and may not generalize to other exergame designs, the results do not currently support the inclusion of physiological measurements in affective exergames, as they did not result in an improved user experience. As the accuracy of difficulty changes is correlated with user experience, the results support the development of more effective DDA methods. However, they show that the inclusion of physiological measurements does not guarantee a better user experience even if it yields promising results in offline cross-validation.

I Don't Like the Cut of your Jib: Perceived Facial Masculinity as a Cue to Criminality.

Previous research has established that the appearance of criminal suspects and defendants can affect subsequent legal decisions. Specifically, researchers have proposed that (1) masculine suspects are believed to commit more stereotypically male crimes (e.g., burglary), (2) masculine suspects are believed to commit more violent crimes (e.g., assault), and (3) masculinity is a general cue for committing crime. The current study sought to test these competing hypotheses regarding masculine appearance and perceived criminality. Across three studies, participants read a brief crime scenario and were asked to select out of a lineup the suspect they believed had committed the crime. Suspect masculinity and type of crime were manipulated to determine whether the degree of masculinity influenced whether participants believed they had committed the crime. Results showed that participants consistently associated masculinity with committing violent crime and showed some evidence for the general criminality hypothesis on secondary measures. These findings have important implications regarding law enforcement, eyewitness and juror bias, and legal decisions.

Spontaneous Violent and Homicide Thoughts in Four Homicide Contexts.

Although homicide remains an important topic of research, the majority of the research has focused on homicidal behavior and not homicide thoughts. Yet research into homicidal thoughts provides valuable insights into issues such as premeditation. In three experiments, we instructed participants to imagine different scenarios describing a situation where homicide and violence actually take place, but that do not contain violence or homicidal actions. We used both explicit and implicit methods to measure homicide and violent ideation. The evidence from these experiments indicates that when people imagine homicide scenarios, they think about violence at a substantial rate, but rarely consider homicide. Limitations and future directions are discussed.

Sex differences in claimed and behavioral self-handicapping and ADHD symptomatology in emerging adults.

Although the research is clear that boys with ADHD have higher symptomatology and impairment than girls with ADHD, for adults the research is mixed. Some studies suggest no sex differences, whereas others suggest that women might have higher symptomatology and impairment. The present study examined sex differences in ADHD symptomatology and impairment, and the possible role of claimed and behavioral self-handicapping as an explanation for any differences. Claimed self-handicapping (CSH) involves reports of performance-inhibiting conditions, whereas behavioral self-handicapping (BSH) involves reporting more objective, intentional acts that could undermine performance. College students (N = 699) completed an online study. Sex differences were found for hyperactivity such that women reported higher levels, but not for inattention or impairment. The test of the indirect effect of sex through CSH was significant, suggesting that higher levels of CSH in women were associated with elevated ADHD symptoms and impairment. The test of the indirect effect of sex through BSH was also significant, suggesting that higher levels of BSH in men are associated with elevated symptoms of ADHD and impairment. These data extend the literature by suggesting that self-handicapping might at least partially explain differential self-reporting of ADHD symptoms and impairment in emerging adults across the sexes.

Exploitative and Deceptive Resource Acquisition Strategies : The Role of Life History Strategy and Life History Contingencies.

Life history strategy (LHS) and life history contingencies (LHCs) should theoretically influence the use of exploitative and deceptive resource acquisition strategies. However, little research has been done in this area. The purpose of the present work was to create measures of exploitative strategies and test the predictions of life history theory. Pilot studies developed and validated a behavioral measure of cheating called the Dot Game. The role of individual LHS and LHCs (manipulated via validated story primes) on cheating was investigated in Study 1. Studies 2a through 2c were conducted to develop and validate a self-report measure called the Exploitative and Deceptive Resource Acquisition Strategy Scale (EDRASS). Finally, Study 3 investigated life history and EDRASS. Results indicated that while LHS influences exploitative strategies, life history contingences had little effect. Implications of these findings are discussed.

The role of goal representations, cultural identity, and dispositional optimism in the depressive experiences of American Indian youth from a Northern Plains tribe.

American Indian researchers and scholars have emphasized the importance of identifying variables that promote resilience and protect against the development of psychopathology in American Indian youth. The present study examined the role of self-regulation, specifically goal characteristics (i.e., goal self-efficacy, goal specificity, intrinsic vs. extrinsic motivation, and goal conflict) and dispositional optimism, as well as cultural identity and self-reported academic grades in the depressive experiences of American Indian youth from a North American plains tribe. One hundred and sixty-four participants (53% female) completed measures of goal representations, cultural identity, dispositional optimism, academic performance, and depressive symptoms. Results supported a model in which higher goal self-efficacy, American Indian cultural identity, grade point average, and dispositional optimism each significantly predicted fewer depressive symptoms. Moreover, grade point average and goal self-efficacy had both direct and indirect (through dispositional optimism) relationships with depressive symptoms. Our findings underscore the importance of cognitive self-regulatory processes and cultural identity in the depressive experiences for these American Indian youth and may have implications for youth interventions attempting to increase resiliency and decrease risk for depressive symptoms.

Construal level mind-sets moderate self- and social stereotyping.

Construal level theory suggests that events and objects can be represented at either a higher, more abstract level involving consideration of superordinate goals, desirability, global processing, and broad categorizations or a lower, more concrete level involving consideration of subordinate goals, feasibility, local processing, and narrow categorizations. Analogously, social targets (including the self) can be represented more broadly, as members of a group, or more narrowly, as individuals. Because abstract construals induce a similarity focus, they were predicted to increase the perceived fit between social targets and a salient social category. Accordingly, placing individuals into a more abstract construal mind-set via an unrelated task increased the activation and use of stereotypes of salient social groups, stereotype-consistent trait ratings of the self, group identification, and stereotype-consistent performance relative to more concrete construal mind-sets. Thus, nonsocial contextual influences (construal level mind-sets) affect stereotyping of self and others.

Jury decision making research: are researchers focusing on the mouse and not the elephant in the room?

The concerns of jury research have extensively focused on subject selection, yet larger issues loom. We argue that observed differences between students and non-students in mock juror studies are inconsistent at best, and that researchers are ignoring the more important issue of jury deliberation. We contend that the lack of information on deliberating jurors and/or juries is a much greater threat to ecological validity and that some of our basic findings and conclusions in the literature today might be different if we had used juries, not non-deliberating jurors, as the unit of measure. Finally, we come full circle in our review and explore whether the debate about college and community samples might be more relevant to deliberating versus non-deliberating jurors.

Self-handicapping, excuse making, and counterfactual thinking: consequences for self-esteem and future motivation.

Researchers interested in counterfactual thinking have often found that upward counterfactual thoughts lead to increased motivation to improve in the future, although at the cost of increased negative affect. The present studies suggest that because upward counterfactual thoughts indicate reasons for a poor performance, they can also serve as excuses. In this case, upward counterfactual thoughts should result in more positive self-esteem and reduced future motivation. Five studies demonstrated these effects in the context of self-handicapping. First, upward counterfactual thinking was increased in the presence of a self-handicap. Second, upward counterfactual thoughts indicating the presence of a self-handicap protected self-esteem following failure. Finally, upward counterfactual thoughts that protect self-esteem reduced preparation for a subsequent performance as well as performance itself. These findings suggest that the consequences of upward counterfactuals for affect and motivation are moderated by the goals of the individual as well as the content of the thoughts.

I want to be creative: exploring the role of hedonic contingency theory in the positive mood-cognitive flexibility link.

Three studies explored the role of hedonic contingency theory as an explanation for the link between positive mood and cognitive flexibility. Study 1 examined the determinants of activity choice for participants in happy, sad, or neutral moods. Consistent with hedonic contingency theory, happy participants weighted potential for creativity as well as the pleasantness of the task more heavily in their preference ratings. In Study 2, participants were given either a neutral or mood-threatening item generation task to perform. Results illustrated that happy participants exhibited greater cognitive flexibility in all cases; when confronted with a potentially mood-threatening task, happy participants were able to creatively transform the task so as to maintain positive mood and interest. Finally, Study 3 manipulated participants' beliefs that moods could or could not be altered. Results replicated the standard positive mood-increased cognitive flexibility effect in the nonmood-freezing condition, but no effects of mood on creativity were found in the mood-freezing condition. These studies indicate that the hedonic contingency theory may be an important contributing mechanism behind the positive mood-cognitive flexibility link.

Construal level and procrastination.

According to construal-level theory, events that are distant in time tend to be represented more abstractly than are events that are close in time. This mental association between level of abstractness and temporal distance is proposed to be a bidirectional relationship, such that level of representation of an event should also have effects on the time when the activity is performed. In the present studies, participants were asked to respond to a questionnaire via e-mail within 3 weeks. The questionnaire was designed to induce either an abstract or a concrete construal. Using a variety of manipulations of construal level, the studies supported the predictions of construal-level theory. Individuals were less likely to procrastinate performing the task when the questionnaire induced a more concrete construal. Furthermore, this effect did not depend on the attractiveness, importance, or perceived difficulty of the task.

"I know you self-handicapped last exam": gender differences in reactions to self-handicapping.

Past research has shown that self-handicapping involves the trade-off of ability-related attributional benefits for interpersonal costs. Study 1 examined whether perceiver or target sex moderates impressions of self-handicapping targets. Although target sex was not an important factor, female perceivers were consistently more critical of behavioral self-handicappers. Two additional studies replicated this gender difference with variations of the handicap. Study 3 examined the motives inferred by perceivers and found that women not only view self-handicappers as more unmotivated but also report greater suspicion of self-handicapping motives; furthermore, these differences in perceived motives mediated sex differences in reactions to self-handicappers. Implications for the effectiveness of self-handicapping as an impression management strategy are discussed.