Racial bias in pediatric pain perception.

Racial disparities in pediatric pain care are prevalent across a variety of healthcare settings, and likely contribute to broader disparities in health, morbidity, and mortality. The present research expands on prior work demonstrating potential perceptual contributions to pain care disparities in adults and tests whether racial bias in pain perception extends to child targets. We examined the perception and hypothetical treatment of pain in Black and White boys (Experiment 1), Black and White boys and girls (Experiment 2), Black and White boys and adult men (Experiment 3), and Black, White, Asian, and Latinx boys (Experiment 4). Across this work, pain was less readily perceived on Black (versus White) boys' faces-though this bias was not observed within girls. Moreover, this perceptual bias was comparable in magnitude to the same bias measured with adult targets and consistently predicted bias in hypothetical treatment. Notably, bias was not limited to Black targets-pain on Hispanic/Latinx boys' faces was also relatively underperceived. Taken together, these results offer strong evidence for racial bias in pediatric pain perception. PERSPECTIVE: This article demonstrates perceptual contributions to racial bias in pediatric pain recognition. Participants consistently saw pain less readily on Black boys' faces, compared to White boys, and this perceptual bias consistently predicted race-based gaps in treatment. This work reveals a novel factor that may support pediatric pain care disparities.

Simplifying social learning.

Social learning is complex, but people often seem to navigate social environments with ease. This ability creates a puzzle for traditional accounts of reinforcement learning (RL) that assume people negotiate a tradeoff between easy-but-simple behavior (model-free learning) and complex-but-difficult behavior (e.g., model-based learning). We offer a theoretical framework for resolving this puzzle: although social environments are complex, people have social expertise that helps them behave flexibly with low cognitive cost. Specifically, by using familiar concepts instead of focusing on novel details, people can turn hard learning problems into simpler ones. This ability highlights social learning as a prototype for studying cognitive simplicity in the face of environmental complexity and identifies a role for conceptual knowledge in everyday reward learning.

Two modes of social impressions and their effects on choice.

Our memories of other people shape how we interact with them. Yet, even when we forget exactly what others said or did, we often remember impressions that capture a general gist of their behavior-whether they were forthright, friendly, or funny. Drawing on fuzzy trace theory, we propose two modes of social impression formation: impressions formed based on ordinal gist ("more competent," "less competent") or categorical gist ("competent," "incompetent"). In turn, we propose that people gravitate toward the simplest representation available and that different modes of memory have distinct consequences for social decisions. Specifically, ordinal impressions lead people to make decisions based on an individual's standing relative to others, whereas categorical impressions lead people to make decisions based on discrete classifications that interpret behavior. In four experiments, participants learned about two groups of individuals who differed in their competence (Studies 1a, 2, and 3) or generosity (Study 1b). When participants encoded impressions as ordinal rankings, they preferred to hire or help a relatively good target from a low-performing group over a relatively bad target from a high-performing group, even though both targets behaved identically and accuracy was incentivized. However, when participants could use categorical boundaries to interpret behavior, this preference was eliminated. In a final experiment, changing the category participants used to encode others' generosity changed their impressions, even when accounting for memory for verbatim details. This work links social impressions to theories of mental representation in memory and judgment, highlighting how distinct representations support divergent patterns of social decision-making. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Context-dependent learning in social interaction: Trait impressions support flexible social choices.

[Correction Notice: An Erratum for this article was reported in Vol 123(4) of Journal of Personality and Social Psychology (see record 2023-02979-001). In the error, the Study 2 heading Computational Mode of Learning should instead appear as Computational Model of Learning. All versions of this article have been corrected.] How do humans learn, through social interaction, whom to depend on in different situations? We compared the extent to which inferred trait attributes-as opposed to learned reward associations previously examined as part of feedback-based learning-could adaptively inform cross-context social decision-making. In four experiments, participants completed a novel task in which they chose to "hire" other players to solve math and verbal questions for money. These players varied in their trait-level competence across these contexts and, independently, in the monetary rewards they offered to participants across contexts. Results revealed that participants chose partners primarily based on context-specific traits, as opposed to either global trait impressions or material rewards. When making choices in novel contexts-including determining who to choose for social and emotional support-participants generalized trait knowledge from past contexts that required similar traits. Reward-based learning, by contrast, demonstrated significantly weaker context-sensitivity and generalization. These findings suggest that people form context-dependent trait impressions from interactive feedback and use this knowledge to make flexible social decisions. These results support a novel theoretical account of how interaction-based social learning can support context-specific impression formation and adaptive decision-making. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Racial disparities in observers' attention to and estimations of others' pain.

ABSTRACT: Research has demonstrated racial disparities in pain care such that Black patients often receive poorer pain care than White patients. Little is known about mechanisms accounting for the emergence of such disparities. The present study had 2 aims. First, we examined whether White observers' attentional processing of pain (using a visual search task [VST] indexing attentional engagement to and attentional disengagement from pain) and estimation of pain experience differed between White vs Black faces. Second, we examined whether these differences were moderated by (1) racially biased beliefs about pain experience and (2) the level of pain expressed by Black vs White faces. Participants consisted of 102 observers (87 females) who performed a VST assessing pain-related attention to White vs Black avatar pain faces. Participants also reported on racially biased beliefs about White vs Black individuals' pain experience and rated the pain intensities expressed by White and Black avatar faces. Results indicated facilitated attentional engagement towards Black (vs White) pain faces. Furthermore, observers who more strongly endorsed the belief that White individuals experience pain more easily than Black individuals had less difficulty disengaging from Black (vs White) pain faces. Regarding pain estimations, observers gave higher pain ratings to Black (vs White) faces expressing high pain and White (vs Black) faces expressing no pain. The current findings attest to the importance of future research into the role of observer attentional processing of sufferers' pain in understanding racial disparities in pain care. Theoretical and clinical implications are discussed, and future research directions are outlined.

Seeing no pain: Assessing the generalizability of racial bias in pain perception.

Racial disparities in pain care may stem, in part, from perceptual roots. It remains unresolved, however, whether this perceptual gap is driven by general deficits in intergroup emotion recognition, endorsement of specific racial stereotypes, or an interaction between the two. We conducted four experiments (total N = 635) assessing relationships between biases in pain perception and treatment and biases in the perception of anger, happiness, fear, and sadness. Participants saw Black and White male targets making increasingly painful and angry (Experiment 1), happy (Experiment 2), fearful (Experiment 3), or sad expressions (Experiment 4). The effect of target race consistently varied based on the emotion displayed. Participants repeatedly saw pain more readily on White (vs. Black) male faces. However, while participants also saw sadness less readily on Black faces, perception of anger, fear, and happiness did not vary by target race. Moreover, the tendency to see pain less readily on Black faces predicted similar differences in recognizing (particularly negative) expressions, though only racial bias in pain perception facilitated similar biases in treatment. Finally, while endorsement of racialized threat stereotypes facilitated recognition of angry expressions and was marginally associated with impeded recognition of happy expressions on Black faces, gaps in pain perception were not reliably related to stereotype endorsement. These data suggest that while racial bias in pain perception is associated with a general bias in recognizing negative emotion on Black male faces, the effects of target race on pain perception are particularly robust and have distinct consequences for gaps in treatment. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Theory of Mind Following the Violation of Strong and Weak Prior Beliefs.

Recent work in psychology and neuroscience has revealed differences in impression updating across social distance and group membership. Observers tend to maintain prior impressions of close (vs. distant) and ingroup (vs. outgroup) others in light of new information, and this belief maintenance is at times accompanied by increased activity in Theory of Mind regions. It remains an open question whether differences in the strength of prior beliefs, in a context absent social motivation, contribute to neural differences during belief updating. We devised a functional magnetic resonance imaging study to isolate the impact of experimentally induced prior beliefs on mentalizing activity. Participants learned about targets who performed 2 or 4 same-valenced behaviors (leading to the formation of weak or strong priors), before performing 2 counter-valenced behaviors. We found a greater change in activity in dorsomedial prefrontal cortex (DMPFC) and right temporo-parietal junction following the violation of strong versus weak priors, and a greater change in activity in DMPFC and left temporo-parietal junction following the violation of positive versus negative priors. These results indicate that differences in neural responses to unexpected behaviors from close versus distant others, and ingroup versus outgroup members, may be driven in part by differences in the strength of prior beliefs.

The Delaware Pain Database: a set of painful expressions and corresponding norming data.

INTRODUCTION: Facial expressions of pain serve an essential social function by communicating suffering and soliciting aid. Accurate visual perception of painful expressions is critical because the misperception of pain signals can have serious clinical and social consequences. Therefore, it is essential that researchers have access to high-quality, diverse databases of painful expressions to better understand accuracy and bias in pain perception. OBJECTIVES: This article describes the development of a large-scale face stimulus database focusing on expressions of pain. METHODS: We collected and normed a database of images of models posing painful facial expressions. We also characterized these stimuli in terms of the presence of a series of pain-relevant facial action units. In addition to our primary database of posed expressions, we provide a separate database of computer-rendered expressions of pain that may be applied to any neutral face photograph. RESULTS: The resulting database comprises 229 unique (and now publicly available) painful expressions. To the best of our knowledge, there are no existing databases of this size, quality, or diversity in terms of race, gender, and expression intensity. We provide evidence for the reliability of expressions and evaluations of pain within these stimuli, as well as a full characterization of this set along dimensions relevant to pain such as perceived status, strength, and dominance. Moreover, our second database complements the primary set in terms of experimental control and precision. CONCLUSION: These stimuli will facilitate reproducible research in both experimental and clinical domains into the mechanisms supporting accuracy and bias in pain perception and care.

Is the Political Slant of Psychology Research Related to Scientific Replicability?

Social science researchers are predominantly liberal, and critics have argued this representation may reduce the robustness of research by embedding liberal values into the research process. In an adversarial collaboration, we examined whether the political slant of research findings in psychology is associated with lower rates of scientific replicability. We analyzed 194 original psychology articles reporting studies that had been subject to a later replication attempt (N = 1,331,413 participants across replications) by having psychology doctoral students (Study 1) and an online sample of U.S. residents (Study 2) from across the political spectrum code the political slant (liberal vs. conservative) of the original research abstracts. The methods and analyses were preregistered. In both studies, the liberal or conservative slant of the original research was not associated with whether the results were successfully replicated. The results remained consistent regardless of the ideology of the coder. Political slant was unrelated to both subsequent citation patterns and the original study's effect size and not consistently related to the original study's sample size. However, we found modest evidence that research with greater political slant-whether liberal or conservative-was less replicable, whereas statistical robustness consistently predicted replication success. We discuss the implications for social science, politics, and replicability.

The time course of moral perception: an ERP investigation of the moral pop-out effect.

Humans are highly attuned to perceptual cues about their values. A growing body of evidence suggests that people selectively attend to moral stimuli. However, it is unknown whether morality is prioritized early in perception or much later in cognitive processing. We use a combination of behavioral methods and electroencephalography to investigate how early in perception moral words are prioritized relative to non-moral words. The behavioral data replicate previous research indicating that people are more likely to correctly identify moral than non-moral words in a modified lexical decision task. The electroencephalography data reveal that words are distinguished from non-words as early as 200 ms after onset over frontal brain areas and moral words are distinguished from non-moral words 100 ms later over left-posterior cortex. Further analyses reveal that differences in brain activity to moral vs non-moral words cannot be explained by differences in arousal associated with the words. These results suggest that moral content might be prioritized in conscious awareness after an initial perceptual encoding but before subsequent memory processing or action preparation. This work offers a more precise theoretical framework for understanding how morality impacts vision and behavior.

Perceptual contributions to racial bias in pain recognition.

The pain of Black Americans is systematically underdiagnosed and undertreated, compared to the pain of their White counterparts. Extensive research has examined the psychological factors that might account for such biases, including status judgments, racial prejudice, and stereotypes about biological differences between Blacks and Whites. Across seven experiments, we accumulated evidence that lower-level perceptual processes also uniquely contribute to downstream racial biases in pain recognition. We repeatedly observed that White participants showed more stringent thresholds for perceiving pain on Black faces, compared to White faces. A tendency to see painful expressions on Black faces less readily arose, in part, from a disruption in configural processing associated with other-race faces. Subsequent analyses revealed that this racial bias in pain perception could not be easily attributed to stimulus features (e.g., color, luminance, or contrast), subjective evaluations related to pain tolerance and experience (e.g., masculinity, dominance, etc.), or objective differences in face structure and expression intensity between Black and White faces. Finally, we observed that racial biases in perception facilitated biases in pain treatment decisions, and that this relationship existed over and above biased judgments of status and strength, explicit racial bias, and endorsement of false beliefs regarding biological differences. A meta-analysis across 9 total experiments (N = 1,289) confirmed the robustness and size of these effects. This research establishes a subtle, albeit influential, perceptual pathway to intergroup bias in pain care and treatment. Implications for racial bias, face perception, and medical treatment are discussed. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Changing our minds: the neural bases of dynamic impression updating.

While a great deal of initial work in social neuroscience addressed the functional bases of our first impressions, our social evaluations of other people are anything but static. Just as our impressions can change, so too has our understanding of the neural underpinnings supporting this dynamic form of social learning. First, I review initial neuroimaging work on behavior-based impression updating, which observed that a distributed network of regions works in concert to revise trait representations in light of new behavioral information. Next, I discuss more recent research detailing how the updating process may be influenced by both bottom-up (e.g. experience) and top-down factors (e.g. motivation). Finally, I explore the contributions of more computational work studying similar processes via tasks that model social learning through repeated interactions and feedback-based reinforcement. Taken together, this work illustrates the expansion of our understanding of social impression formation, beyond static initial snapshots and towards a more dynamic process in which our representations of other people are continuously revised and reinterpreted in light of new information.

Neural dissociations between meaningful and mere inconsistency in impression updating.

Recent neuroimaging work has identified a network of regions that work in concert to update impressions of other people, particularly in response to inconsistent behavior. However, the specific functional contributions of these regions to the updating process remain unclear. Using fMRI, we tested whether increases in activity triggered by inconsistent behavior reflect changes in the stored representations of other people in response to behavioral inconsistency, or merely a response to the inconsistency itself. Participants encountered a series of individuals whose behavior either changed in an attributionally meaningful fashion or was merely inconsistent with the immediately preceding behavior. We observed that left ventrolateral prefrontal cortex (vlPFC) and left inferior frontal gyrus (IFG) were preferentially recruited in response to unexpected, immoral behavior, whereas a separate set of regions (including dorsal anterior cingulate cortex, posterior cingulate cortex and temporoparietal junction/inferior parietal lobule) was preferentially recruited in response to more mundane inconsistencies in behavior. These results shed light on the distributed systems supporting impression updating. Specifically, while many regions supporting updating may primarily respond to moment-to-moment changes in behavior, a subset of regions (e.g. vlPFC and IFG) may contribute to updating person representations in response to trait-relevant changes in behavior.

Contextual sensitivity in scientific reproducibility.

In recent years, scientists have paid increasing attention to reproducibility. For example, the Reproducibility Project, a large-scale replication attempt of 100 studies published in top psychology journals found that only 39% could be unambiguously reproduced. There is a growing consensus among scientists that the lack of reproducibility in psychology and other fields stems from various methodological factors, including low statistical power, researcher's degrees of freedom, and an emphasis on publishing surprising positive results. However, there is a contentious debate about the extent to which failures to reproduce certain results might also reflect contextual differences (often termed "hidden moderators") between the original research and the replication attempt. Although psychologists have found extensive evidence that contextual factors alter behavior, some have argued that context is unlikely to influence the results of direct replications precisely because these studies use the same methods as those used in the original research. To help resolve this debate, we recoded the 100 original studies from the Reproducibility Project on the extent to which the research topic of each study was contextually sensitive. Results suggested that the contextual sensitivity of the research topic was associated with replication success, even after statistically adjusting for several methodological characteristics (e.g., statistical power, effect size). The association between contextual sensitivity and replication success did not differ across psychological subdisciplines. These results suggest that researchers, replicators, and consumers should be mindful of contextual factors that might influence a psychological process. We offer several guidelines for dealing with contextual sensitivity in reproducibility.

The Dorsomedial Prefrontal Cortex Plays a Causal Role in Integrating Social Impressions from Faces and Verbal Descriptions.

Several neuroimaging studies point to a key role of the dorsomedial prefrontal cortex (dmPFC) in the formation of socially relevant impressions. In 3 different experiments, participants were required to form socially relevant impressions about other individuals on the basis of text descriptions of their social behaviors, and to decide whether a face alone, a trait adjective (e.g., "selfish"), or a face presented with a trait adjective was consistent or inconsistent with the impression they had formed. Before deciding whether the target stimulus matched the impression they had previously formed, participants received transcranial magnetic stimulation (TMS) over the dmPFC, the inferior frontal gyrus (IFG, also implicated in social impression formation), or over a control site (vertex). Results from the 3 experiments converged in showing that interfering with dmPFC activity significantly delayed participants in responding whether a face-adjective pair was consistent with the impression they had formed. No effects of TMS were observed following stimulation of the IFG or when evaluations had to be made on faces or trait adjectives presented alone. Our findings critically extend previous neuroimaging evidence by indicating a causal role of the dmPFC in creating coherent impressions based on the integration of face and verbal description of social behaviors.

Social attributions from faces: determinants, consequences, accuracy, and functional significance.

Since the early twentieth century, psychologists have known that there is consensus in attributing social and personality characteristics from facial appearance. Recent studies have shown that surprisingly little time and effort are needed to arrive at this consensus. Here we review recent research on social attributions from faces. Section I outlines data-driven methods capable of identifying the perceptual basis of consensus in social attributions from faces (e.g., What makes a face look threatening?). Section II describes nonperceptual determinants of social attributions (e.g., person knowledge and incidental associations). Section III discusses evidence that attributions from faces predict important social outcomes in diverse domains (e.g., investment decisions and leader selection). In Section IV, we argue that the diagnostic validity of these attributions has been greatly overstated in the literature. In the final section, we offer an account of the functional significance of these attributions.

Diagnostic value underlies asymmetric updating of impressions in the morality and ability domains.

While positive behavioral information is diagnostic when evaluating a person's abilities, negative information is diagnostic when evaluating morality. Although social psychology has considered these two domains as orthogonal and distinct from one another, we demonstrate that this asymmetry in diagnosticity can be explained by a single parsimonious principle--the perceived frequency of behaviors in these domains. Less frequent behaviors (e.g., high ability and low morality) are weighed more heavily in evaluations. We show that this statistical principle of frequency-derived diagnosticity is evident in human participants at both behavioral and neural levels of analysis. Specifically, activity in right ventrolateral prefrontal cortex increased preferentially when participants updated impressions based on diagnostic behaviors, and further, activity in this region covaried parametrically with the perceived frequency of behaviors. Activity in left ventrolateral PFC, left inferior frontal gyrus, and left superior temporal sulcus showed similar patterns of diagnosticity and sensitivity, though additional analyses confirmed that these regions responded primarily to updates based on immoral behaviors.

Robust selectivity for faces in the human amygdala in the absence of expressions.

There is a well-established posterior network of cortical regions that plays a central role in face processing and that has been investigated extensively. In contrast, although responsive to faces, the amygdala is not considered a core face-selective region, and its face selectivity has never been a topic of systematic research in human neuroimaging studies. Here, we conducted a large-scale group analysis of fMRI data from 215 participants. We replicated the posterior network observed in prior studies but found equally robust and reliable responses to faces in the amygdala. These responses were detectable in most individual participants, but they were also highly sensitive to the initial statistical threshold and habituated more rapidly than the responses in posterior face-selective regions. A multivariate analysis showed that the pattern of responses to faces across voxels in the amygdala had high reliability over time. Finally, functional connectivity analyses showed stronger coupling between the amygdala and posterior face-selective regions during the perception of faces than during the perception of control visual categories. These findings suggest that the amygdala should be considered a core face-selective region.