Hypnotic susceptibility, baseline attentional functioning, and the Stroop task

According to the theoretical framework relating hypnosis to attention, baseline attentional functioning in highly hypnotizable individuals should be more efficient than in low hypnotizable individuals. However, previous studies did not find differences in Stroop-like tasks in which the measure indicative of the Stroop interference effect was based on response latencies. This study was designed to determine whether subjects with different levels of hypnotic susceptibility show differences in baseline attentional functioning. To assess this hypothesis, high, medium, and low hypnotizable subjects performed a Stroop task designed to evaluate accuracy performance, before being subjected to hypnotic induction. Results showed that the Stroop interference effect was smaller in high hypnotizable subjects than in low hypnotizable subjects, whereas it was not different between high, and medium hypnotizable subjects. This outcome supports the notion that baseline attentional functioning is related to hypnotic susceptibility.     

Co‐Hyperintensionality

Co‐hyperintensionality, or hyperintensional equivalence, is a relation holding between two or more contents that can be substituted in a hyperintensional context salva veritate. I argue that two strategies used to provide criteria for co‐hyperintensionality (appeal to some form of impossible worlds, or to structural or procedural equivalence of propositions) fail. I argue that there is no generalized notion of co‐hyperintensionality that meets plausible desiderata, by showing that the opposite thesis leads to falsity. As a conclusion, I suggest to take co‐hyperintensionality as a primitive and I provide a general criterion of co‐hyperintensionality whose content depends on each hyperintensional notion we aim to formalize.     

Cholinergic dependence of taste memory formation: evidence of two distinct processes

Learning the aversive or positive consequences associated with novel taste solutions has a strong significance for an animal's survival. A lack of recognition of a taste's consequences could prevent ingestion of potential edibles or encounter death. We used conditioned taste aversion (CTA) and attenuation of neophobia (AN) to study aversive and safe taste memory formation. To determine if muscarinic receptors in the insular cortex participate differentially in both tasks, we infused the muscarinic antagonists scopolamine at distinct times before or after the presentation of a strong concentration of saccharin, followed by either an i.p. injection of a malaise-inducing agent or no injection. Our results showed that blockade of muscarinic receptors before taste presentation disrupts both learning tasks. However, the same treatment after the taste prevents AN but not CTA. These results clearly demonstrate that cortical cholinergic activity participates in the acquisition of both safe and aversive memory formation, and that cortical muscarinic receptors seem to be necessary for safe but not for aversive taste memory consolidation. These results suggest that the taste memory trace is processed in the insular cortex simultaneously by at least two independent mechanisms, and that their interaction would determine the degree of aversion or preference learned to a novel taste.     

The evil eye: Eye gaze and competitiveness in social decision making

We demonstrate that a person's eye gaze and his/her competitiveness are closely intertwined in social decision making. In an exploratory examination of this relationship, Study 1 uses field data from a high‐stakes TV game show to demonstrate that the frequency by which contestants gaze at their opponent's eyes predicts their defection in a variant on the prisoner's dilemma. Studies 2 and 3 use experiments to examine the underlying causality and demonstrate that the relationship between gazing and competitive behavior is bi‐directional. In Study 2, fixation on the eyes, compared to the face, increases competitive behavior toward the target in an ultimatum game. In Study 3, we manipulate the framing of a negotiation (cooperative vs. competitive) and use an eye tracker to measure fixation number and time spent fixating on the counterpart's eyes. We find that a competitive negotiation elicits more gazing, which in turn leads to more competitive behavior.     

Epistemic Motivation and the Structure of Moral Intuition: Dispositional Need for Closure as a Predictor of Individualizing and Binding Morality

Moral foundations theory argues that morality encompasses both group‐preserving binding concerns about in‐group loyalty, authority and purity and individualizing concerns about harm avoidance and fairness. Although studies have examined the relationship between sociopolitical attitudes and the moral foundations, the relationship between individual differences in epistemic motivation—as indexed by need for cognitive closure—and moral intuition remains unexplored. Given the role of groups in providing epistemic security, we hypothesized that the need for closure would be most strongly related to support for the foundations most central to the regulation of group ties, that is, the binding foundations as opposed to the individualizing ones. Data from three samples provided evidence for this. Unpacking this pattern, we also found that those high in need for closure endorsed all foundations, whereas those low in need for closure emphasized only the individualizing ones. Finally, we found that the relationship between need for closure and the binding foundations was mediated by right‐wing authoritarianism, an orientation closely linked to a desire for the preservation of conventional in‐group morality. Copyright © 2016 European Association of Personality Psychology     

Gender Stereotypes in Spanish Television Commercials

The objective of the present study was an analysis of gender stereotypes in television advertisements in Spain. For this purpose the content analysis method was used to analyze 400 advertisements broadcast during prime time over the three national television channels with the largest audience. A series of variables common to similar investigations were coded in order to allow comparisons with other countries. The data show significant gender differences for all variables. Comparison of results with those of other researchers shows that television advertising in Spain reveals gender stereotypes very similar to those found in advertising from countries with a geographic or cultural proximity.     

Muscarinic receptors activity in the perirhinal cortex and hippocampus has differential involvement in the formation of recognition memory

In this work we probed the effects of post-trial infusions of the muscarinic receptor antagonist scopolamine on object recognition memory formation. Scopolamine was infused bilaterally immediately after the sample phase in the perirhinal cortex or dorsal hippocampus and animals were tested for short-term (90 min) or long-term (24 h) memory. Results showed that scopolamine impaired short-term memory when injected in either the perirhinal cortex or hippocampus. Nevertheless, scopolamine disrupted long-term memory when administrated in the perirhinal cortex but not when applied in the hippocampus. Long-term memory was unaffected when scopolamine was infused 160 min after the sample phase or 90 min before test phase. Our data indicate that short-term recognition memory requires muscarinic receptors signaling in both the perirhinal cortex and hippocampus, whereas long-term recognition memory depends on muscarinic receptors in the perirhinal cortex but not hippocampus. These results support a differential involvement of muscarinic activity in these two medial temporal lobe structures in the formation of recognition memory.