Does inequity aversion depend on a frustration effect? A test with capuchin monkeys (Cebus apella)

Brosnan and de Waal (Nature 425:297–299, 2003) reported that if a witness monkey saw a model monkey receive a high-value food, the witness was more inclined to reject a previously acceptable, but low-value food. Later work demonstrated that this alleged inequity aversion might be due to frustration induced by switching subjects from their role as models receiving a high-value food to the role of witnesses receiving a low-value food. In the present study, pairs of female capuchins exchanged a token for either a high- or a low-value food without switching their model–witness roles. Witnesses could exchange a token for a low-value food after an adjacent model had exchanged a token for the same food (Equity Condition) or for a high-value food (Inequity Condition). Failure- and latency-to-exchange measures showed that witnesses were unaffected by the food type offered to models (no inequity aversion). Moreover, models were unaffected by their history of food type offered (no frustration). These results join earlier work suggesting that alleged inequity effects depend on frustration-induction procedures. Furthermore, inequity effects sometimes fail to emerge because frustration induction in nonhuman primates is labile. This study complied with protocols approved by the Italian Health Ministry and all procedures were performed in full accordance with the European law on humane care and use of laboratory animals.     

The Role of Job Relatedness and Self‐efficacy in Applicant Perceptions of Fairness in a High‐stakes Selection Setting

This article presents results from two samples of applicants (total N = 368) for general practitioner posts in the United Kingdom. The roles of job relatedness and self‐efficacy in fairness perceptions were explored, with data gathered at two time points: immediately after testing and one month later following outcome (pass/fail) feedback. Overall, results indicated that in two samples, job relatedness perceptions measured at the time of testing predicted fairness perceptions measured following outcome feedback. In addition, the stage in the selection process (shortlisting vs. assessment center) was important in determining the extent to which job relatedness perceptions predicted fairness. Findings also suggest that self‐efficacy may be a predictor, rather than an outcome variable, in applicant fairness perceptions in this high‐stakes setting. Results are discussed in relation to their practical and theoretical implications.     

Who Discovered the Binary System and Arithmetic? Did Leibniz Plagiarize Caramuel?

Gottfried Wilhelm Leibniz (1646–1716) is the self-proclaimed inventor of the binary system and is considered as such by most historians of mathematics and/or mathematicians. Really though, we owe the groundwork of today’s computing not to Leibniz but to the Englishman Thomas Harriot and the Spaniard Juan Caramuel de Lobkowitz (1606–1682), whom Leibniz plagiarized. This plagiarism has been identified on the basis of several facts: Caramuel’s work on the binary system is earlier than Leibniz’s, Leibniz was acquainted—both directly and indirectly—with Caramuel’s work and Leibniz had a natural tendency to plagiarize scientific works.     

Voicing conflict: preferred conflict strategies among incremental and entity theorists

The way individuals choose to handle their feelings during interpersonal conflicts has important consequences for relationship outcomes. In this article, the authors predict and find evidence that people's implicit theory of personality is an important predictor of conflict behavior following a relationship transgression. Incremental theorists, who believe personality can change and improve, were likely to voice their displeasure with others openly and constructively during conflicts. Entity theorists, who believe personality is fundamentally fixed, were less likely to voice their dissatisfactions directly. These patterns were observed in both a retrospective study of conflict in dating relationships (Study 1) and a prospective study of daily conflict experiences (Study 2). Study 2 revealed that the divergence between incremental and entity theorists was increasingly pronounced as conflicts increased in severity: the higher the stakes the stronger the effect.     

More of myself: Manipulating interoceptive awareness by heightened attention to bodily and narrative aspects of the self

Psychology distinguishes between a bodily and a narrative self. Within neuroscience, models of the bodily self are based on exteroceptive sensorimotor processes or on the integration of interoceptive sensations. Recent research has revealed interactions between interoceptive and exteroceptive processing of self-related information, for example that mirror self-observation can improve interoceptive awareness. Using heartbeat perception, we measured the effect on interoceptive awareness of two experimental manipulations, designed to heighten attention to bodily and narrative aspects of the self. Participants gazed at a photograph of their own face or at self-relevant words. In both experimental conditions interoceptive awareness was significantly increased, compared to baseline. Results show that attention to narrative aspects of self, previously regarded as relying on higher-order processes, has an effect similar to self-face stimuli in improving interoceptive awareness. Our findings extend the previously observed interaction between the bodily self and interoception to more abstract amodal representations of the self.     

Spatial and Temporal Details in Intentions: A Cue to Detecting Deception

Research into lying about intentions is relatively new. Studies have suggested that lying about intentions can be detected with statement analysing methods. This article describes two experiments. The first experiment investigates how much spatial and temporal detail is given by people who are discussing a true or false intention in a 26‐question interview. The results showed that those with a true intention gave more spatial and temporal details. The second experiment examines these details in a one‐question interview and whether the amount of temporal detail given can be manipulated by the phrasing of the question. The results showed that the amount of detail is much lower in these short interviews, but can be increased with specific phrasing. The theoretical and practical implications of these results are discussed. Copyright © 2012 John Wiley & Sons, Ltd.