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1. Perceived warmth and competence predict callback rates in meta-analyzed North American labor market experiments

   https://doi.org/10.1371/journal.pone.0304723  

   Gallo, Marcos; Hausladen, Carina I; Hsu, Ming; Jenkins, Adrianna C; Ona, Vaida; Camerer, Colin F (July 2024, PLOS ONE)

   Otterbring, Tobias (Ed.)

   Extensive literature probes labor market discrimination through correspondence studies in which researchers send pairs of resumes to employers, which are closely matched except for social signals such as gender or ethnicity. Upon perceiving these signals, individuals quickly activate associated stereotypes. The Stereotype Content Model (SCM; Fiske 2002) categorizes these stereotypes into two dimensions: warmth and competence. Our research integrates findings from correspondence studies with theories of social psychology, asking: Can discrimination between social groups, measured through employer callback disparities, be predicted by warmth and competence perceptions of social signals? We collect callback rates from 21 published correspondence studies, varying for 592 social signals. On those social signals, we collected warmth and competence perceptions from an independent group of online raters. We found that social perception predicts callback disparities for studies varying race and gender, which are indirectly signaled by names on these resumes. Yet, for studies adjusting other categories like sexuality and disability, the influence of social perception on callbacks is inconsistent. For instance, a more favorable perception of signals like parenthood does not consistently lead to increased callbacks, underscoring the necessity for further research. Our research offers pivotal strategies to address labor market discrimination in practice. Leveraging the warmth and competence framework allows for the predictive identification of bias against specific groups without extensive correspondence studies. By distilling hiring discrimination into these two dimensions, we not only facilitate the development of decision support systems for hiring managers but also equip computer scientists with a foundational framework for debiasing Large Language Models and other methods that are increasingly employed in hiring processes. 

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2. Who is the Expert? Reconciling Algorithm Aversion and Algorithm Appreciation in AI-Supported Decision Making

   https://doi.org/10.1145/3479864  

   Hou, Tsung-Yu Yoyo; Jung, Malte F. (October 2021, Proceedings of the ACM on Human-Computer Interaction)

   The increased use of algorithms to support decision making raises questions about whether people prefer algorithmic or human input when making decisions. Two streams of research on algorithm aversion and algorithm appreciation have yielded contradicting results. Our work attempts to reconcile these contradictory findings by focusing on the framings of humans and algorithms as a mechanism. In three decision making experiments, we created an algorithm appreciation result (Experiment 1) as well as an algorithm aversion result (Experiment 2) by manipulating only the description of the human agent and the algorithmic agent, and we demonstrated how different choices of framings can lead to inconsistent outcomes in previous studies (Experiment 3). We also showed that these results were mediated by the agent's perceived competence, i.e., expert power. The results provide insights into the divergence of the algorithm aversion and algorithm appreciation literature. We hope to shift the attention from these two contradicting phenomena to how we can better design the framing of algorithms. We also call the attention of the community to the theory of power sources, as it is a systemic framework that can open up new possibilities for designing algorithmic decision support systems. 

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3. Similarity Among Friends Serves as a Social Prior: The Assumption That “Birds of a Feather Flock Together” Shapes Social Decisions and Relationship Beliefs

   https://doi.org/10.1177/01461672221140269  

   Schwyck, Miriam E.; Du, Meng; Li, Yuchen; Chang, Luke J.; Parkinson, Carolyn (June 2024, Personality and Social Psychology Bulletin)

   Social interactions unfold within networks of relationships. How do beliefs about others’ social ties shape—and how are they shaped by—expectations about how others will behave? Here, participants joined a fictive online game-playing community and interacted with its purported members, who varied in terms of their trustworthiness and apparent relationships with one another. Participants were less trusting of partners with untrustworthy friends, even after they consistently showed themselves to be trustworthy, and were less willing to engage with them in the future. To test whether people not only expect friends to behave similarly but also expect those who behave similarly to be friends, an incidental memory test was given. Participants were exceptionally likely to falsely remember similarly behaving partners as friends. Thus, people expect friendship to predict similar behavior and vice versa. These results suggest that knowledge of social networks and others’ behavioral tendencies reciprocally interact to shape social thought and behavior. 

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4. Norms of Fairness and Generosity Among People Experiencing Homelessness: A Dictator Game Field Experiment

   https://doi.org/10.5206/ijoh.2023.3.16987  

   Anderson, Mary-Catherine; Hazel, Ashley; Perkins, Jessica; Almquist, Zack (June 2023, International Journal on Homelessness)

   Society often ascribes negative stereotypes to people experiencing homelessness. However, people experiencing homelessness have been found to display highly nuanced social behaviors. We employ a field dictator game to examine prosocial behavior among 173 unhoused individuals in Nashville, TN. We test whether an unhoused population displays ingroup bias, wherein they are more generous toward other people experiencing homelessness (the hypothesized ingroup) than people not experiencing homelessness (the hypothesized out-group). Additionally, we explore relationships between sociodemographic and personal characteristics (social support, perceptions of deservedness/generosity) and dictator game behavior. We did not observe ingroup bias. However, on average, participants allocated 29% of their game endowment to recipients, consistent with cross-cultural dictator game studies. We found that the duration of homelessness, social support, and gender were associated with dictator game allocations. Additionally, people experiencing homelessness were more generous when they perceived other unhoused individuals would be more generous and deserving. 

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5. Four dimensions characterize attributions from faces using a representative set of English trait words

   https://doi.org/10.1038/s41467-021-25500-y  

   Lin, Chujun; Keles, Umit; Adolphs, Ralph (December 2021, Nature Communications)

   null (Ed.)

   Abstract People readily (but often inaccurately) attribute traits to others based on faces. While the details of attributions depend on the language available to describe social traits, psychological theories argue that two or three dimensions (such as valence and dominance) summarize social trait attributions from faces. However, prior work has used only a small number of trait words (12 to 18), limiting conclusions to date. In two large-scale, preregistered studies we ask participants to rate 100 faces (obtained from existing face stimuli sets), using a list of 100 English trait words that we derived using deep neural network analysis of words that have been used by other participants in prior studies to describe faces. In study 1 we find that these attributions are best described by four psychological dimensions, which we interpret as “warmth”, “competence”, “femininity”, and “youth”. In study 2 we partially reproduce these four dimensions using the same stimuli among additional participant raters from multiple regions around the world, in both aggregated and individual-level data. These results provide a comprehensive characterization of trait attributions from faces, although we note our conclusions are limited by the scope of our study (in particular we note only white faces and English trait words were included). 

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