Eye movements reveal sustained implicit processing of others' mental states

The ability to attribute mental states to others is crucial for social competency. To assess mentalizing abilities, in false-belief tasks participants attempt to identify an actor's belief about an object's location as opposed to the object's actual location. Passing this test on explicit measures is typically achieved by 4 years of age, but recent eye movement studies reveal registration of others' beliefs by 7 to 15 months. Consequently, a 2-path mentalizing system has been proposed, consisting of a late developing, cognitively demanding component and an early developing, implicit/automatic component. To date, investigations on the implicit system have been based on single-trial experiments only or have not examined how it operates across time. In addition, no study has examined the extent to which participants are conscious of the belief states of others during these tasks. Thus, the existence of a distinct implicit mentalizing system is yet to be demonstrated definitively. Here we show that adults engaged in a primary unrelated task display eye movement patterns consistent with mental state attributions across a sustained temporal period. Debriefing supported the hypothesis that this mentalizing was implicit. It appears there indeed exists a distinct implicit mental state attribution system.     

Diversifying experiences enhance cognitive flexibility

Past research has linked creativity to unusual and unexpected experiences, such as early parental loss or living abroad. However, few studies have investigated the underlying cognitive processes. We propose that these experiences have in common a “diversifying” aspect and an active involvement, which together enhance cognitive flexibility (i.e., creative cognitive processing). In the first experiment, participants experienced complex unusual and unexpected events happening in a virtual reality. In the second experiment, participants were confronted with schema-violations. In both experiments, comparisons with various control groups showed that a diversifying experience – defined as the active (but not vicarious) involvement in an unusual event – increased cognitive flexibility more than active (or vicarious) involvement in normal experiences. Our findings bridge several lines of research and shed light on a basic cognitive mechanism responsible for creativity.     

Selectively friending: Racial stereotypicality and social rejection

Three studies show that people whose physical features are seen as more (versus less) racially stereotypical are more vulnerable to social rejection and exclusion from those outside their group. In Study 1, which used an online social networking site, Blacks perceived as more physically stereotypical were found to have fewer non-Black friends, compared to less-stereotypical Blacks. In Study 2, which used an experimental paradigm, requests for friendship made to non-Blacks by more-stereotypical Blacks were more likely to be rejected than those made by less-stereotypical Blacks. Finally, in a college dormitory, people judged to have more (vs. less) racially stereotypical physical features were found to interact less often with outgroup members. This work substantiates a growing body of research demonstrating that people who are perceived as more physically stereotypical of their racial group are particularly vulnerable to discriminatory treatment by outgroup members across a variety of life domains.     

Another fundamental social category? Spontaneous categorization of people who uphold or violate moral norms

Studies of social categorization have shown that humans robustly categorize others along dimensions of sex, age, kinship, and coalition. Drawing on a functional perspective, we predicted that humans should also categorize others along the dimension of morality (i.e., violating vs. upholding moral norms). In a study employing the memory confusion paradigm, university undergraduate participants (N = 39) were presented with same-sex targets randomly matched with sentences indicating violation or upholding of moral norms, and with sentences indicating competence or incompetence. Results showed that participants spontaneously categorized along morality but not along competence, suggesting that morality (beyond general valence) may be an important dimension of social categorization.     

In competitive interaction displays of red increase actors' competitive approach and perceivers' withdrawal

Colors carry meaningful psychological signals. We hypothesized that the color red serves as a powerful cue in competition, affecting both actors and perceivers. Using simplified poker games we investigated the psychological meaning of color in competitive interaction, by examining how the color of chips (red vs. blue or white) used by participants or their competitors affected behavior. Although chip color was objectively unrelated to the chips' value or competitors' strength, perceiving competitors using red chips renders competitors more intimidating, which leads perceivers to withdraw. Furthermore, actors who used red chips felt more dominant, which led them to enhanced competitive approach. Displaying red thus makes actors feel stronger and increases competitive approach; perceivers of displays of red in competitors feel intimidated and withdraw from competing.     

"The referents of trait inferences: The impact of trait concepts versus actor-trait links on subsequent judgments": Retraction of Stapel, Koomen, and van der Pligt (1996)

Reports the retraction of "The referents of trait inferences: The impact of trait concepts versus actor-trait links on subsequent judgments" by Diederik A. Stapel, Willem Koomen and Joop van der Pligt (Journal of Personality and Social Psychology, 1996[Mar], Vol 70[3], 437-450). This retraction follows the results of an investigation into the work of Diederik A. Stapel (further information on the investigation can be found here: https://www.commissielevelt.nl/). The Drenth Committee has found evidence of fraud, leading to the conclusion that fraud is most likely in the data supplied by Diederik A. Stapel. His co-authors were unaware of his actions and were not involved in the collection of the likely fraudulent data. (The following abstract of the original article appeared in record 1996-03014-002.) The authors investigated the hypothesis that when trait inferences refer to abstract behavior labels they act as a general interpretation frame and lead to assimilation in subsequent judgments of an ambiguous target, whereas when they refer to a specific actor-trait link they will be used as a scale anchor and lead to contrast. Similar to G. B. Moskowitz and R. J. Roman's (see record 1992-31124-001) study, participants who were instructed to memorize trait-implying sentences showed assimilation, and participants who were instructed to form an impression of the actors in these sentences showed contrast. However, exposure to trait-implying sentences that described actors with real names and were accompanied with photos of the actors resulted in contrast under both memorization and impression instructions (Experiment 1). Furthermore, contrast ensued when trait-implying sentences were accompanied with information that suggested a person attribution, whereas assimilation ensued when that information suggested a situation attribution, independent of processing goals (Experiment 2). These findings are interpreted as support for referent-based explanations of the consequences of trait inferences. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Consequence Mining

The standard semantic definition of consequence with respect to a selected set X of symbols, in terms of truth preservation under replacement (Bolzano) or reinterpretation (Tarski) of symbols outside X, yields a function mapping X to a consequence relation \(\Rightarrow_X\). We investigate a function going in the other direction, thus extracting the constants of a given consequence relation, and we show that this function (a) retrieves the usual logical constants from the usual logical consequence relations, and (b) is an inverse to—more precisely, forms a Galois connection with—the Bolzano–Tarski function.     

Real Analysis in Paraconsistent Logic

This paper begins an analysis of the real line using an inconsistency-tolerant (paraconsistent) logic. We show that basic field and compactness properties hold, by way of novel proofs that make no use of consistency-reliant inferences; some techniques from constructive analysis are used instead. While no inconsistencies are found in the algebraic operations on the real number field, prospects for other non-trivializing contradictions are left open.     

Intuitionistic Epistemic Logic,Kripke Models and Fitch’s Paradox

The present work is motivated by two questions. (1) What should an intuitionistic epistemic logic look like? (2) How should one interpret the knowledge operator in a Kripke-model for it? In what follows we outline an answer to (2) and give a model-theoretic definition of the operator K. This will shed some light also on (1), since it turns out that K, defined as we do, fulfills the properties of a necessity operator for a normal modal logic. The interest of our construction also lies in a better insight into the intuitionistic solution to Fitch’s paradox, which is discussed in the third section. In particular we examine, in the light of our definition, DeVidi and Solomon’s proposal of formulating the verification thesis as \(\phi \rightarrow \neg \neg K\phi\). We show, as our main result, that this definition excapes the paradox, though it is validated only under restrictive conditions on the models.     

Religious and Spiritual Practices Among Patients with Cancer

The aim of this study was to investigate the frequency with which cancer patients engage in religious and spiritual practices, the methods used, the reasons for such a search, and the levels of depression and hopelessness in patients who seek spiritual assistance. One hundred and ten radiation oncology patients, who gave voluntary informed consent were included in this study. Questionnaires about religious and spiritual practices were administered, along with the Beck Depression and Beck Hopelessness scales. Twenty percent of the patients preferred spiritual practices. Female gender, lower education levels, and higher depression and hopelessness scores were associated with this preference. The frequency of depression was 18.2%, and the frequency of hopelessness was 20.9%. A significant number of cancer patients engaged in religious and spiritual practices. We recommend that practitioners offer their patients brief but sufficient information about religious and spiritual support and determine their patients’ depression and hopelessness levels.