Best research practices for using the Implicit Association Test.

Interest in unintended discrimination that can result from implicit attitudes and stereotypes (implicit biases) has stimulated many research investigations. Much of this research has used the Implicit Association Test (IAT) to measure association strengths that are presumed to underlie implicit biases. It had been more than a decade since the last published treatment of recommended best practices for research using IAT measures. After an initial draft by the first author, and continuing through three subsequent drafts, the 22 authors and 14 commenters contributed extensively to refining the selection and description of recommendation-worthy research practices. Individual judgments of agreement or disagreement were provided by 29 of the 36 authors and commenters. Of the 21 recommended practices for conducting research with IAT measures presented in this article, all but two were endorsed by 90% or more of those who felt knowledgeable enough to express agreement or disagreement; only 4% of the totality of judgments expressed disagreement. For two practices that were retained despite more than two judgments of disagreement (four for one, five for the other), the bases for those disagreements are described in presenting the recommendations. The article additionally provides recommendations for how to report procedures of IAT measures in empirical articles.

Do implicit evaluations reflect unconscious attitudes?

We extend Newell & Shanks' (N&S's) arguments to the question of whether implicit evaluations reflect unconscious attitudes. We argue that correspondence to explicit evaluations fails to meet the criteria of relevance and sensitivity. When awareness is measured adequately and in line with N&S's criteria, there is compelling evidence that people are consciously aware of their implicit evaluations.

Awareness and Calibration: The Role of Descriptive Norms and Social Desirability in Accurate IAT Score Predictions of Food Items vs. Social Groups.

Extending research that people are able to predict the patterns of their social group biases on Implicit Association Tests (IATs), we let participants predict and complete IATs toward five different food item pairs and compared the results with the social-groups domain. Participants predicted the patterns of their IAT scores with similar accuracy in both domains, suggesting similar internal awareness (evidenced by comparable within-subjects correlations), even though food evaluations followed less descriptively-normative patterns. At the same time, participants were better-calibrated in communicating their evaluations in the domain of food than social groups (evidenced by higher between-subjects correlations). This discrepancy may partly stem from participants' tendency to refrain from using harsh labels when predicting social group biases, despite their demonstrated awareness of them: IAT scores predicted as "moderate" or "strong" for food preferences tended to be labeled "mild" for social groups. Discussion centers on the importance of distinguishing between awareness and calibration.

Self-Awareness and Stereotypes: Accurate Prediction of Implicit Gender Stereotyping.

Research showing that people can predict the patterns of their implicit evaluations toward social groups has raised questions concerning how widely these findings extend to other domains, such as semantic implicit stereotyping. In a preregistered laboratory study, participants were asked to predict their scores on five implicit gender stereotyping Implicit Associations Tests (IATs). Within-subjects correlations between IAT score predictions and IAT scores showed high levels of accuracy. Although part of the IAT score patterns could be predicted from shared knowledge, own predictions significantly outperformed predictions of random others and normative patterns, suggesting self-awareness beyond reliance on shared knowledge. In line with dual-process models emphasizing that different information is captured by implicit as opposed to explicit measures, predictions explained correlations between implicit and traditional explicit stereotyping measures, and led to acknowledgment of bias. Discussion focuses on understanding conscious awareness of semantic automatic processes and conceptualizations of the cognitions underlying implicit measures.

Perception of social participation in borderline personality disorder.

Interpersonal dysfunction is a key feature of borderline personality disorder (BPD). Distorted perception of participation in social situations and altered emotional responses could contribute to these typical interpersonal problems in BPD. Thirty patients with BPD were compared with a healthy control group (n = 30) in their perceptions and subjective emotional reactions to situations of social inclusion and exclusion. Participants played Cyberball, a virtual ball-tossing paradigm, in which social inclusion and exclusion are experimentally induced. Control participants reacted with an increase in sadness, anger and overall negative affect when excluded. In BPD patients, social exclusion also induced anger, while general participating in the game seemed to reduce levels of sadness. Compared with healthy controls, BPD patients felt more readily excluded independent of the condition of inclusion or exclusion. In conclusion, patients with BPD displayed a negative bias toward perceived participation in social situations. Key PRACTITIONER MESSAGE: Patients with BPD have a biased perception for exclusion. Virtual ball-tossing games can be used to induce anger in patients with BPD. Participating in a virtual ball-tossing game may reduce levels of sadness in BPD in the short term.

The Bidirectional Causal Relation Between Implicit Stereotypes and Implicit Prejudice.

Although stereotypes and prejudice are commonly regarded as conceptually distinct but related constructs, previous research remains silent on the processes underlying their relation. Applying the balance-congruity principle to the concepts (a) group, (b) valence, and (c) attribute, we argue that the valence of attributes contained in a group-stereotype shapes evaluations of the group, while prejudice toward a group influences which attributes are stereotypically associated with the group. Using fictitious (Experiments 1 and 3) and real (Experiments 2 and 4) groups, the current studies demonstrate that (a) experimentally induced changes in the valence of semantic attributes associated with a group (stereotypes) influence implicit prejudice toward that group (Experiments 1 and 2), and (b) experimentally induced changes in the valence of a group (prejudice) influence implicit stereotyping of that group (Experiments 3 and 4). These findings demonstrate a bidirectional causal relation between prejudice and stereotypes.

Crowdsourcing hypothesis tests: Making transparent how design choices shape research results.

To what extent are research results influenced by subjective decisions that scientists make as they design studies? Fifteen research teams independently designed studies to answer five original research questions related to moral judgments, negotiations, and implicit cognition. Participants from 2 separate large samples (total N > 15,000) were then randomly assigned to complete 1 version of each study. Effect sizes varied dramatically across different sets of materials designed to test the same hypothesis: Materials from different teams rendered statistically significant effects in opposite directions for 4 of 5 hypotheses, with the narrowest range in estimates being d = -0.37 to + 0.26. Meta-analysis and a Bayesian perspective on the results revealed overall support for 2 hypotheses and a lack of support for 3 hypotheses. Overall, practically none of the variability in effect sizes was attributable to the skill of the research team in designing materials, whereas considerable variability was attributable to the hypothesis being tested. In a forecasting survey, predictions of other scientists were significantly correlated with study results, both across and within hypotheses. Crowdsourced testing of research hypotheses helps reveal the true consistency of empirical support for a scientific claim. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

What Cognitive Mechanisms Do People Reflect on When They Predict IAT Scores?

Research indicates that individuals can prospectively predict biases they will show on the implicit-association test (IAT). The present study uses the Quadruple process model to analyze data from Hahn, Judd, Hirsh, and Blair to investigate which cognitive mechanisms people reflect on when predicting their racial bias scores on the IAT. The Quadruple process model reveals that a combination of activated associations and self-regulatory control best explains what participants report when they predict their biases on the IAT. Furthermore, it appears to be specifically the total activation of positive attitudes toward Whites and negative attitudes toward minorities rather than negative attitudes toward minorities alone, that participants use to make their predictions.

Facing one's implicit biases: From awareness to acknowledgment.

Expanding on conflicting theoretical conceptualizations of implicit bias, 6 studies tested the effectiveness of different procedures to increase acknowledgment of harboring biases against minorities. Participants who predicted their responses toward pictures of various minority groups on future implicit association tests (IATs) showed increased alignment between implicit and explicit preferences (Studies 1-3), greater levels of explicit bias (Studies 1-3), and increased self-reported acknowledgment of being racially biased (Studies 4-6). In all studies, effects of IAT score prediction were significant even when participants did not actually complete IATs. Effects of predicting IAT scores were moderated by nonprejudicial goals, in that IAT score prediction increased acknowledgment of bias for participants with strong nonprejudicial goals, but not for participants with weak nonprejudicial goals (Study 4). Mere completion of IATs and feedback on IAT performance had inconsistent effects across studies and criterion measures. Instructions to attend to one's spontaneous affective reactions toward minority group members increased acknowledgment of bias to the same extent as IAT score prediction (Study 6). The findings are consistent with conceptualizations suggesting that (a) implicit evaluations are consciously experienced as spontaneous affective reactions and (b) directing people's attention to their spontaneous affective reactions can increase acknowledgment of bias. Implications for theoretical conceptualizations of implicit bias and interventions that aim to reduce discrimination via increased acknowledgment of bias are discussed. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Data from a pre-publication independent replication initiative examining ten moral judgement effects.

We present the data from a crowdsourced project seeking to replicate findings in independent laboratories before (rather than after) they are published. In this Pre-Publication Independent Replication (PPIR) initiative, 25 research groups attempted to replicate 10 moral judgment effects from a single laboratory's research pipeline of unpublished findings. The 10 effects were investigated using online/lab surveys containing psychological manipulations (vignettes) followed by questionnaires. Results revealed a mix of reliable, unreliable, and culturally moderated findings. Unlike any previous replication project, this dataset includes the data from not only the replications but also from the original studies, creating a unique corpus that researchers can use to better understand reproducibility and irreproducibility in science.

Measuring intergroup ideologies: positive and negative aspects of emphasizing versus looking beyond group differences.

Research on interethnic relations has focused on two ideologies, asking whether it is best to de-emphasize social-category differences (colorblind) or emphasize and celebrate differences (multicultural). We argue each of these can manifest with negative outgroup evaluations: Assimilationism demands that subordinate groups adopt dominant group norms to minimize group distinctions; segregationism holds that groups should occupy separate spheres. Parallel versions can be identified for intergender relations. Scales to measure all four ideologies are developed both for ethnicity (Studies 1 and 2) and gender (Studies 3 and 4). Results demonstrate that the ideologies can be reliably measured, that the hypothesized four-factor models are superior to alternative models with fewer factors, and that the ideologies relate as predicted to the importance ascribed to group distinctions, subordinate group evaluations, and solution preferences for intergroup conflict scenarios. We argue that this fourfold model can help clarify theory and measurement, allowing a more nuanced assessment of ideological attitudes.

Oxytocin improves mentalizing - pronounced effects for individuals with attenuated ability to empathize.

The ability to predict the behavior of others based on their mental states is crucial for social functioning. Previous studies have provided evidence for the role of Oxytocin (OXT) in enhancing the ability to mentalize. It has also been demonstrated that the effect of OXT seems to strongly depend on socio-cognitive skills with more pronounced effects in individuals with lower socio-cognitive skills. Although recent studies indicate that mentalizing is related to empathy, no study has yet examined whether the effects of OXT on mentalizing depend on the ability to empathize. 71 male participants participated in a double-blind, between-subjects, placebo-controlled experiment. The Reading the Mind in the Eye Test (RMET) was used to investigate mentalizing abilities. We analyzed the effect of OXT on easy and difficult items of the RMET depending on differential empathy scores of the participants as assessed with the Empathy Quotient (EQ). Our results showed that OXT improves mentalizing for difficult but not for easy items. We generally observed increased mentalizing accuracy in participants with higher empathy scores. Importantly, however, whereas the performance in participants with higher empathy scores was comparable in both OXT and placebo condition, OXT specifically enhanced mentalizing accuracy in participants with lower empathy scores. Our findings suggest that OXT enhances mentalizing abilities. However, we also demonstrate that not all participants benefited from OXT application. It seems that the effects of OXT strongly depend on baseline social-cognitive skills such as empathy.

Cyber-physical security of Wide-Area Monitoring, Protection and Control in a smart grid environment.

Smart grid initiatives will produce a grid that is increasingly dependent on its cyber infrastructure in order to support the numerous power applications necessary to provide improved grid monitoring and control capabilities. However, recent findings documented in government reports and other literature, indicate the growing threat of cyber-based attacks in numbers and sophistication targeting the nation's electric grid and other critical infrastructures. Specifically, this paper discusses cyber-physical security of Wide-Area Monitoring, Protection and Control (WAMPAC) from a coordinated cyber attack perspective and introduces a game-theoretic approach to address the issue. Finally, the paper briefly describes how cyber-physical testbeds can be used to evaluate the security research and perform realistic attack-defense studies for smart grid type environments.

Awareness of implicit attitudes.

Research on implicit attitudes has raised questions about how well people know their own attitudes. Most research on this question has focused on the correspondence between measures of implicit attitudes and measures of explicit attitudes, with low correspondence interpreted as showing that people have little awareness of their implicit attitudes. We took a different approach and directly asked participants to predict their results on upcoming Implicit Association Test (IAT) measures of implicit attitudes toward 5 social groups. We found that participants were surprisingly accurate in their predictions. Across 4 studies, predictions were accurate regardless of whether implicit attitudes were described as true attitudes or culturally learned associations (Studies 1 and 2), regardless of whether predictions were made as specific response patterns (Study 1) or as conceptual responses (Studies 2-4), and regardless of how much experience or explanation participants received before making their predictions (Study 4). Study 3 further suggested that participants' predictions reflected unique insight into their own implicit responses, beyond intuitions about how people in general might respond. Prediction accuracy occurred despite generally low correspondence between implicit and explicit measures of attitudes, as found in prior research. Altogether, the research findings cast doubt on the belief that attitudes or evaluations measured by the IAT necessarily reflect unconscious attitudes.

The beneficial effect of oxytocin on avoidance-related facial emotion recognition depends on early life stress experience.

RATIONALE: Previous studies have shown that oxytocin (OXT) enhances social cognitive processes. It has also been demonstrated that OXT does not uniformly facilitate social cognition. The effects of OXT administration strongly depend on the exposure to stressful experiences in early life. Emotional facial recognition is crucial for social cognition. However, no study has yet examined how the effects of OXT on the ability to identify emotional faces are altered by early life stress (ELS) experiences. Given the role of OXT in modulating social motivational processes, we specifically aimed to investigate its effects on the recognition of approach- and avoidance-related facial emotions. METHODS: In a double-blind, between-subjects, placebo-controlled design, 82 male participants performed an emotion recognition task with faces taken from the "Karolinska Directed Emotional Faces" set. We clustered the six basic emotions along the dimensions approach (happy, surprise, anger) and avoidance (fear, sadness, disgust). ELS was assessed with the Childhood Trauma Questionnaire (CTQ). RESULTS: Our results showed that OXT improved the ability to recognize avoidance-related emotional faces as compared to approach-related emotional faces. Whereas the performance for avoidance-related emotions in participants with higher ELS scores was comparable in both OXT and placebo condition, OXT enhanced emotion recognition in participants with lower ELS scores. Independent of OXT administration, we observed increased emotion recognition for avoidance-related faces in participants with high ELS scores. CONCLUSIONS: Our findings suggest that the investigation of OXT on social recognition requires a broad approach that takes ELS experiences as well as motivational processes into account.

Cationic peptide exposure enhances pulsed-electric-field-mediated membrane disruption.

BACKGROUND: The use of pulsed electric fields (PEFs) to irreversibly electroporate cells is a promising approach for destroying undesirable cells. This approach may gain enhanced applicability if the intensity of the PEF required to electrically disrupt cell membranes can be reduced via exposure to a molecular deliverable. This will be particularly impactful if that reduced PEF minimally influences cells that are not exposed to the deliverable. We hypothesized that the introduction of charged molecules to the cell surfaces would create regions of enhanced transmembrane electric potential in the vicinity of each charged molecule, thereby lowering the PEF intensity required to disrupt the plasma membranes. This study will therefore examine if exposure to cationic peptides can enhance a PEF's ability to disrupt plasma membranes. METHODOLOGY/PRINCIPAL FINDINGS: We exposed leukemia cells to 40 µs PEFs in media containing varying concentrations of a cationic peptide, polyarginine. We observed the internalization of a membrane integrity indicator, propidium iodide (PI), in real time. Based on an individual cell's PI fluorescence versus time signature, we were able to determine the relative degree of membrane disruption. When using 1-2 kV/cm, exposure to >50 µg/ml of polyarginine resulted in immediate and high levels of PI uptake, indicating severe membrane disruption, whereas in the absence of peptide, cells predominantly exhibited signatures indicative of no membrane disruption. Additionally, PI entered cells through the anode-facing membrane when exposed to cationic peptide, which was theoretically expected. CONCLUSIONS/SIGNIFICANCE: Exposure to cationic peptides reduced the PEF intensity required to induce rapid and irreversible membrane disruption. Critically, peptide exposure reduced the PEF intensities required to elicit irreversible membrane disruption at normally sub-electroporation intensities. We believe that these cationic peptides, when coupled with current advancements in cell targeting techniques will be useful tools in applications where targeted destruction of unwanted cell populations is desired.