Efficiency neglect: Why people are pessimistic about the effects of increasing population.

In six studies, we find evidence of efficiency neglect: when thinking about the effects of population growth, people intuitively focus on increased demand while neglecting the changes in production efficiency that occur alongside, and often in response to, increased demand. In other words, people tend to think of others solely as consumers, rather than as consumers as well as producers. Efficiency neglect leads to beliefs that the real costs of some consumer goods are rising when they are actually decreasing and may contribute to antiimmigration sentiments because of the fear that increasing local population creates competition for fixed resources. We demonstrate that economic pessimism and antiimmigration sentiments are reduced when people are prompted to consider their own beliefs about increased productivity over time, but are unchanged when they consider their beliefs about increases in demand. Together, these findings shed light on people's lay economic theories and suggest promising interventions. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

An Emphasis on Brilliance Fosters Masculinity-Contest Cultures.

Women are underrepresented in fields in which success is believed to require brilliance, but the reasons for this pattern are poorly understood. We investigated perceptions of a "masculinity-contest culture," an organizational environment of ruthless competition, as a key mechanism whereby a perceived emphasis on brilliance discourages female participation. Across three preregistered correlational and experimental studies involving adult lay participants online (N = 870) and academics from more than 30 disciplines (N = 1,347), we found a positive association between the perception that a field or an organization values brilliance and the perception that this field or organization is characterized by a masculinity-contest culture. This association was particularly strong among women. In turn, perceiving a masculinity-contest culture predicted lower interest and sense of belonging as well as stronger impostor feelings. Experimentally reducing the perception of a masculinity-contest culture eliminated gender gaps in interest and belonging in a brilliance-oriented organization, suggesting possible avenues for intervention.

Impact of an emergency medicine pharmacist on door to needle alteplase time and patient outcomes in acute ischemic stroke.

PURPOSE: Time is a critical metric in the emergency department (ED) for acute ischemic stroke and thrombolytic therapy. National guidelines have emphasized tracking time from stroke onset to treatment and decreasing door to needle (DTN) time [1, 2]. Multidisciplinary teamwork is encouraged but, there is limited evidence demonstrating the value of the pharmacist on the stroke response team. The goal of this study is to compare DTN times in the ED with or without a pharmacist at bedside and examine the impact on subsequent patient outcomes. METHODS: This was a single-center retrospective cohort study. Investigators identified patients who presented to the ED between August 2016 - May 2020 with signs of ischemic stroke and subsequently received intravenous alteplase. Patients were excluded if they refused alteplase or received alteplase off-campus before being transferred. Pharmacist documentation of clinical interventions was used to identify participation on the stroke response team. The primary outcome was median DTN time. Secondary outcomes included severity of deficits measured by the National Institutes of Health Stroke Scale (NIHSS), hospital length of stay (LOS), 90-day Modified Rankin Scale (mRS), incidence of intracranial hemorrhage (ICH), and inpatient all-cause mortality. RESULTS: Of the 164 patients included, 31 had an emergency medicine pharmacist at bedside (EMP group) and 133 did not (No EMP group). The median DTN time was significantly shorter at 35 min EMP [interquartile range (IQR) 29-44] vs 42 min No EMP [IQR 34-55]; p = 0.003. The number of cases achieving a DTN time of 30 min or less was significantly higher when a pharmacist was involved (35.5% vs.16.5%; p = 0.018) as well as the number of patients receiving alteplase within 45 min (80.7% vs. 57.1%; p = 0.015). NIHSS scores at discharge were lower in the EMP group (2 [IQR 0-5] vs. 4 [IQR 0-8.25]; p = 0.049). In patients with magnetic resonance imaging (MRI) confirmed stroke, a difference was not observed in the secondary outcomes. CONCLUSION: Patients with an emergency medicine pharmacist as part of their stroke response team had significantly lower DTN times. A higher proportion of these cases met benchmark DTN times less than 45 min and 30 min. An emergency medicine pharmacist on a stroke response team has the potential to improve patient care.

Value-based essentialism: Essentialist beliefs about social groups with shared values.

Psychological essentialism has played an important role in social psychology, informing influential theories of stereotyping and prejudice as well as questions about wrongdoers' accountability and their ability to change. In the existing literature, essentialism is often tied to beliefs in shared biology-that is, the extent to which members of a social group are seen as having the same underlying biological features. Here we investigate the possibility of "value-based essentialism" in which people think of certain social groups in terms of an underlying essence, but that essence is understood as a value. Study 1 explored beliefs about a wide range of social groups and found that both groups with shared biology (e.g., women) and shared values (e.g., hippies) elicited similar general essentialist beliefs relative to more incidental social categories (e.g., English-speakers). In Studies 2-4, participants who read about a group either as being based in biology or in values reported higher general essentialist beliefs compared with a control condition. Because biological essences about social groups have been connected to a number of downstream consequences, we also investigated two test cases concerning value-based essentialism. In Study 3, beliefs about both shared biology and shared values increased inductive generalizations about the social group relative to control, but in Study 4, only the shared biology condition reduced blame for wrongdoing. Together these findings join with recent work to support a broader theoretical framework of essentialism about social groups that can be arrived at through multiple pathways, including, in the present case, shared values. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Replicating different roles of intent across moral domains.

Whether moral cognition is underpinned by distinct mental systems that process different domains of moral information (moral pluralism) is an important question for moral cognition research. The reduced importance of intent (intentional versus accidental action) when judging purity (e.g. incest), when compared with harm (e.g. poisoning), moral violations is, arguably, some of the strongest experimental evidence for distinct moral systems or 'foundations'. The experiment presented here is a replication attempt of these experimental findings. A pre-registered replication of Experiment 1B from the original article documenting this effect was conducted in a sample of N = 400 participants. Findings from this successful replication are discussed in terms of theoretical and methodological implications for approaches to moral cognition.

Attentional efficiency does not explain the mental state × domain effect.

The reduced importance of intent when judging purity (vs. harm) violations is some of the strongest evidence for distinct moral modules or systems: moral pluralism. However, research has indicated that some supposed differences between purity and harm moral domains are due to the relative weirdness of purity vignettes. This weirdness might lead to a failure to attend to or correctly process relevant mental state information. Such attentional failures could offer an alternative explanation (to separate moral systems) for the reduced exculpatory value of innocent intentions for purity violations. We tested if the different role of intent in each domain was moderated by individual differences in attentional efficiency, as measured by the Attention Network Task. If attentional efficiency explains the reduced exculpatory value of innocent intentions in purity (vs. harm) violations, then we would expect those high (vs. low) in attentional efficiency not to show the reduced exculpatory effect of innocent intentions in the purity (vs. harm) domain. Consistent with moral pluralism, results revealed no such moderation. Findings are discussed in relation to various ways of testing domain-general and domain-specific accounts of the mental state × domain effect, so that we might better understand the architecture of our moral minds.

Inconsistent allocations of harms versus benefits may exacerbate environmental inequality.

We report five studies that examine preferences for the allocation of environmental harms and benefits. In all studies, participants were presented with scenarios in which an existing environmental inequality between two otherwise similar communities could either be decreased or increased through various allocation decisions. Our results demonstrate that despite well-established preferences toward equal outcomes, people express weaker preferences for options that increase equality when considering the allocation of environmental harms (e.g., building new polluting facilities) than when considering the allocation of environmental benefits (e.g., applying pollution-reducing technologies). We argue that this effect emerges from fairness considerations rooted in a psychological incompatibility between the allocation of harms, which is seen as an inherently unfair action, and equality, which is a basic fairness principle. Since the allocation of harms is an inevitable part of operations of both governments and businesses, our results suggest that where possible, parties interested in increasing environmental equality may benefit from framing such proposals as bestowing relative benefits instead of imposing relative harms.

Dosing Cefepime for Renal Function Does Not Completely Prevent Neurotoxicity in a Patient With Kidney Transplant.

Dosing cefepime for renal function does not completely prevent neurotoxicity in a kidney transplant patient. Cefepime neurotoxicity has been reported primarily among patients with renal insufficiency who received standard doses of the antibiotic. We report a case of nonconvulsive status epilepticus from dose-adjusted cefepime in a kidney transplant patient. The timing of symptoms along with clinical and electroencephalographic improvement after discontinuation of cefepime was critical to the diagnosis. Whether we should adjust the dose of cefepime differently in a patient with transplanted kidney to prevent neurotoxicity is unknown.

Consistent Belief in a Good True Self in Misanthropes and Three Interdependent Cultures.

People sometimes explain behavior by appealing to an essentialist concept of the self, often referred to as the true self. Existing studies suggest that people tend to believe that the true self is morally virtuous; that is deep inside, every person is motivated to behave in morally good ways. Is this belief particular to individuals with optimistic beliefs or people from Western cultures, or does it reflect a widely held cognitive bias in how people understand the self? To address this question, we tested the good true self theory against two potential boundary conditions that are known to elicit different beliefs about the self as a whole. Study 1 tested whether individual differences in misanthropy-the tendency to view humans negatively-predict beliefs about the good true self in an American sample. The results indicate a consistent belief in a good true self, even among individuals who have an explicitly pessimistic view of others. Study 2 compared true self-attributions across cultural groups, by comparing samples from an independent country (USA) and a diverse set of interdependent countries (Russia, Singapore, and Colombia). Results indicated that the direction and magnitude of the effect are comparable across all groups we tested. The belief in a good true self appears robust across groups varying in cultural orientation or misanthropy, suggesting a consistent psychological tendency to view the true self as morally good.

The dynamics of the metabolism of acetate and bicarbonate associated with use of hemodialysates in the ABChD trial: a phase IV, prospective, single center, single blind, randomized, cross-over, two week investigation.

BACKGROUND: In the United States, hemodialysis (HD) is generally performed via a bicarbonate dialysate. It is not known if small amounts of acid used in dialysate to buffer the bicarbonate can meaningfully contribute to overall buffering administered during HD. We aimed to investigate the metabolism of acetate with use of two different acid buffer concentrates and determine if it effects blood bicarbonate concentrations in HD patients. METHODS: The Acid-Base Composition with use of hemoDialysates (ABChD) trial was a Phase IV, prospective, single blind, randomized, cross-over, 2 week investigation of peridialytic dynamics of acetate and bicarbonate associated with use of acid buffer concentrates. Eleven prevalent HD patients participated from November 2014 to February 2015. Patients received two HD treatments, with NaturaLyte® and GranuFlo® acid concentrates containing 4 and 8 mEq/L of acetate, respectively. Dialysate order was chosen in a random fashion. The endpoint was to characterize the dynamics of acetate received and metabolized during hemodialysis, and how it effects overall bicarbonate concentrations in the blood and dialysate. Acetate and bicarbonate concentrations were assessed before, at 8 time points during, and 6 time points after the completion of HD. RESULTS: Data from 20 HD treatments for 11 patients (10 NaturaLyte® and 10 GranuFlo®) was analyzed. Cumulative trajectories of arterialized acetate were unique between NaturaLyte® and GranuFlo® (p = 0.003), yet individual time points demonstrated overlap without remarkable differences. Arterialized and venous blood bicarbonate concentrations were similar at HD initiation, but by 240 min into dialysis, mean arterialized bicarbonate concentrations were 30.2 (SD ± 4.16) mEq/L in GranuFlo® and 28.8 (SD ± 4.26) mEq/L in NaturaLyte®. Regardless of acid buffer concentrate, arterial blood bicarbonate was primarily dictated by the prescribed bicarbonate level. Subjects tolerated HD with both acid buffer concentrates without experiencing any related adverse events. CONCLUSIONS: A small fraction of acetate was delivered to HD patients with use of NaturaLyte® and GranuFlo® acid buffers; the majority of acetate received was observed to be rapidly metabolized and cleared from the circulation. Blood bicarbonate concentrations appear to be determined mainly by the prescribed concentration of bicarbonate. TRIAL REGISTRATION: This trial was registered on ClinicalTrials.gov on 11 Dec 2014 ( NCT02334267 ).

The True Self: A Psychological Concept Distinct From the Self.

A long tradition of psychological research has explored the distinction between characteristics that are part of the self and those that lie outside of it. Recently, a surge of research has begun examining a further distinction. Even among characteristics that are internal to the self, people pick out a subset as belonging to the true self. These factors are judged as making people who they really are, deep down. In this paper, we introduce the concept of the true self and identify features that distinguish people's understanding of the true self from their understanding of the self more generally. In particular, we consider recent findings that the true self is perceived as positive and moral and that this tendency is actor-observer invariant and cross-culturally stable. We then explore possible explanations for these findings and discuss their implications for a variety of issues in psychology.

Normative Judgments and Individual Essence.

A growing body of research has examined how people judge the persistence of identity over time-that is, how they decide that a particular individual is the same entity from one time to the next. While a great deal of progress has been made in understanding the types of features that people typically consider when making such judgments, to date, existing work has not explored how these judgments may be shaped by normative considerations. The present studies demonstrate that normative beliefs do appear to play an important role in people's beliefs about persistence. Specifically, people are more likely to judge that the identity of a given entity (e.g., a hypothetical nation) remains the same when its features improve (e.g., the nation becomes more egalitarian) than when its features deteriorate (e.g., the nation becomes more discriminatory). Study 1 provides a basic demonstration of this effect. Study 2 shows that this effect is moderated by individual differences in normative beliefs. Study 3 examines the underlying mechanism, which is the belief that, in general, various entities are essentially good. Study 4 directly manipulates beliefs about essence to show that the positivity bias regarding essences is causally responsible for the effect.

The need to belong motivates demand for authentic objects.

The present studies examine how demand for certain types of authentic objects is related to a more fundamental need to form social connections with others. Specifically, Experiment 1 demonstrates that manipulating the need to belong leads to greater valuation of celebrity memorabilia. Experiment 2 provides converging evidence by demonstrating that individual differences in the need to belong moderate the relationship between beliefs in essence transfer (i.e., contagion) and valuation. This paper lends insight into the underlying motives behind demand for authentic objects and, more broadly, reinforces the compensatory role of consumption in satisfying core psychological needs.

Beliefs about the true self explain asymmetries based on moral judgment.

Past research has identified a number of asymmetries based on moral judgments. Beliefs about (a) what a person values, (b) whether a person is happy, (c) whether a person has shown weakness of will, and (d) whether a person deserves praise or blame seem to depend critically on whether participants themselves find the agent's behavior to be morally good or bad. To date, however, the origins of these asymmetries remain unknown. The present studies examine whether beliefs about an agent's "true self" explain these observed asymmetries based on moral judgment. Using the identical materials from previous studies in this area, a series of five experiments indicate that people show a general tendency to conclude that deep inside every individual there is a "true self" calling him or her to behave in ways that are morally virtuous. In turn, this belief causes people to hold different intuitions about what the agent values, whether the agent is happy, whether he or she has shown weakness of will, and whether he or she deserves praise or blame. These results not only help to answer important questions about how people attribute various mental states to others; they also contribute to important theoretical debates regarding how moral values may shape our beliefs about phenomena that, on the surface, appear to be decidedly non-moral in nature.

System-justifying motives can lead to both the acceptance and the rejection of innate explanations for group differences.

Recent experimental evidence indicates that intuitions about inherence and system justification are distinct psychological processes, and that the inherence heuristic supplies important explanatory frameworks that are accepted or rejected based on their consistency with one's motivation to justify the system.

Are artworks more like people than artifacts? Individual concepts and their extensions.

This paper examines people's reasoning about identity continuity (i.e., how people decide that a particular object is the same object over time) and its relation to previous research on how people value one-of-a-kind artifacts, such as artwork. We propose that judgments about the continuity of artworks are related to judgments about the continuity of individual persons because art objects are seen as physical extensions of their creators. We report a reanalysis of previous data and the results of two new empirical studies that test this hypothesis. The first study demonstrates that the mere categorization of an object as "art" versus "a tool" changes people's intuitions about the persistence of those objects over time. In a second study, we examine some conditions that may lead artworks to be thought of as different from other artifacts. These observations inform both current understanding of what makes some objects one-of-a-kind as well as broader questions regarding how people intuitively think about the persistence of human agents.

Social heuristics shape intuitive cooperation.

Cooperation is central to human societies. Yet relatively little is known about the cognitive underpinnings of cooperative decision making. Does cooperation require deliberate self-restraint? Or is spontaneous prosociality reined in by calculating self-interest? Here we present a theory of why (and for whom) intuition favors cooperation: cooperation is typically advantageous in everyday life, leading to the formation of generalized cooperative intuitions. Deliberation, by contrast, adjusts behaviour towards the optimum for a given situation. Thus, in one-shot anonymous interactions where selfishness is optimal, intuitive responses tend to be more cooperative than deliberative responses. We test this 'social heuristics hypothesis' by aggregating across every cooperation experiment using time pressure that we conducted over a 2-year period (15 studies and 6,910 decisions), as well as performing a novel time pressure experiment. Doing so demonstrates a positive average effect of time pressure on cooperation. We also find substantial variation in this effect, and show that this variation is partly explained by previous experience with one-shot lab experiments.

Individualism and the extended-self: cross-cultural differences in the valuation of authentic objects.

The current studies examine how valuation of authentic items varies as a function of culture. We find that U.S. respondents value authentic items associated with individual persons (a sweater or an artwork) more than Indian respondents, but that both cultures value authentic objects not associated with persons (a dinosaur bone or a moon rock) equally. These differences cannot be attributed to more general cultural differences in the value assigned to authenticity. Rather, the results support the hypothesis that individualistic cultures place a greater value on objects associated with unique persons and in so doing, offer the first evidence for how valuation of certain authentic items may vary cross-culturally.

Physical contact influences how much people pay at celebrity auctions.

Contagion is a form of magical thinking in which people believe that a person's immaterial qualities or essence can be transferred to an object through physical contact. Here we investigate how a belief in contagion influences the sale of celebrity memorabilia. Using data from three high-profile estate auctions, we find that people's expectations about the amount of physical contact between the object and the celebrity positively predicts the final bids for items that belonged to well-liked individuals (e.g., John F. Kennedy) and negatively predicts final bids for items that belonged to disliked individuals (e.g., Bernard Madoff). A follow-up experiment further suggests that these effects are driven by contagion beliefs: when asked to bid on a sweater owned by a well-liked celebrity, participants report that they would pay substantially less if it was sterilized before they received it. However, sterilization increases the amount they would pay for a sweater owned by a disliked celebrity. These studies suggest that magical thinking may still have effects in contemporary Western societies and they provide some unique demonstrations of contagion effects on real-world purchase decisions.