Brain regions involved in subprocesses of small-space episodic object-location memory: a systematic review of lesion and functional neuroimaging studies

Object-location memory (OLM) enables us to keep track of the locations of objects in our environment. The neurocognitive model of OLM (Postma, A., Kessels, R. P. C., & Van Asselen, M. (2004). The neuropsychology of object-location memory. In G. L. Allen (Ed.), Human spatial memory: Remembering where (pp. 143–160). Mahwah, NJ: Lawrence Erlbaum, Postma, A., Kessels, R. P. C., & Van Asselen, M. (2008). How the brain remembers and forgets where things are: The neurocognition of object-location memory. Neuroscience & Biobehavioral Reviews, 32, 1339–1345. doi:10.1016/j.neubiorev.2008.05.001) proposes that distinct brain regions are specialised for different subprocesses of OLM (object processing, location processing, and object-location binding; categorical and coordinate OLM; egocentric and allocentric OLM). It was based mainly on findings from lesion studies. However, recent episodic memory studies point to a contribution of additional or different brain regions to object and location processing within episodic OLM. To evaluate and update the neurocognitive model of OLM, we therefore conducted a systematic literature search for lesion as well as functional neuroimaging studies contrasting small-space episodic OLM with object memory or location memory. We identified 10 relevant lesion studies and 8 relevant functional neuroimaging studies. We could confirm some of the proposals of the neurocognitive model of OLM, but also differing hypotheses from episodic memory research, about which brain regions are involved in the different subprocesses of small-space episodic OLM. In addition, we were able to identify new brain regions as well as important research gaps.     

Seeing is Knowing: On the Predictive Accuracy of Self‐ and Informant Reports for Prosocial and Moral Behaviours

Under certain circumstances, well‐known others (so‐called informants) may possess unique insights into targets' personality traits beyond the targets' self‐views. Specifically, as proposed by the self–other knowledge asymmetry model, an incremental predictive ability of informants is most likely for traits and corresponding behaviours that are clearly visible to others and highly evaluative in nature. In two studies, we provide an empirical test of this proposition and extend prior research to one of the most important domains of interpersonal interaction: prosocial and moral behaviours. Specifically, we investigate the unique predictive power of informant reports in trait Honesty–Humility for fairness in the dictator game and dishonesty in a cheating paradigm. Importantly, while both these classes of behaviour are highly evaluative in nature, only fairness is clearly visible to others. Correspondingly, in line with the self–other knowledge asymmetry model, our results reveal unique predictive accuracy of informant reports for fairness. For dishonesty, by contrast, there was no conclusive evidence for incremental predictive power of informant reports. This implies that informants may indeed provide valuable information beyond targets' self‐reports on trait aspects driving fair behaviour, but that targets themselves are their own best experts when it comes to judging trait aspects driving dishonest behaviour. Copyright © 2017 European Association of Personality Psychology     

Gender-Related Traits as Predictors of Alcohol Use in Male German and Spanish University Students

This study examined instrumental (masculine stereotyped) and expressive (feminine stereotyped) personality traits and alcohol use among men from Germany and Spain. Participants were 161 male university students (76 German, M _age?=?23?years; 77 Spanish, M _age?=?22?years), who completed either a daytime or a nighttime drinking questionnaire, each including a Short Form of the Bem Sex Role Inventory. Poisson regression analyses with latent predictors were conducted. The trait factors and their interactions with nationality predicted daytime and nighttime alcohol use. The results add support to the assumption that alcohol use is associated with the construction of masculinity and that internalization of traditionally female attributes protects against health-risk behaviors such as alcohol consumption.     

On the positive aspects of customers: Customer‐initiated support and affective crossover in employee–customer dyads

This study examines psychological resources for service employees and their customers, which enhance the service experiences of both parties during service conversations. We investigate whether customer behaviour (customer‐initiated support) positively impacts on employees’ affect. We also examine the crossover of employees’ affect on customers’ affect. State positive affect (PA) was assessed in 82 employees of car dealerships and 421 customers on 2 occasions (before and after the conversation). Multi‐level analyses showed the hypothesized positive impact of customer behaviour on employees’ PA and in turn of employees’ PA on customers’ PA. Results are integrated in an overall process model whereby customers’ PA leads to customer‐initiated support, which increases employees’ PA and in turn enhances customers’ PA. Results suggest direct and indirect crossover effects. This study extends research on customer behaviour offering a positive slant on customer behaviour and suggests to actively involve customers in the service process in order to promote their positive behaviour towards employees.     

Dehumanization and Guilt as Distinct but Related Predictors of Support for Reparation Policies

In two studies, we predicted that support for reparation policies would be influenced positively by feelings of group-based guilt and negatively by dehumanization of the outgroup. We also hypothesized that a valence manipulation of the ingroup's behavior would cause differences in such support which would be mediated by guilt. In the first study, we manipulated the valence of past ingroup behavior and assessed guilt, dehumanization, and reparation support. As expected, guilt predicted positively and dehumanization negatively participants' support. In addition, guilt partially mediated the manipulation effects on policy support. Consistent with previous research, guilt and dehumanization were unrelated. In Study 2, we assessed individual differences in dehumanization before the manipulation and examined their associations with guilt and reparation support. Initial analyses replicated Study 1. In addition, guilt partially mediated the influence of dehumanization on reparation support. Results suggest that the presence of guilt motivates support for reparation policies, while the absence of guilt explains in part why individual differences in dehumanization inhibit such support.     

Olfactory predator recognition in predator-naïve gray mouse lemurs (Microcebus murinus)

Olfactory cues of predators, such as feces, are known to elicit antipredator responses in animals (e.g., avoidance, activity). To date, however, there is little information on olfactory predator recognition in primates. We tested whether the odor of feces of different predator categories (historical Malagasy predators and introduced predators) and of Malagasy nonpredators (control) induces antipredator behavior in captive born, predator-na?ve gray mouse lemurs. In an olfactory predator experiment a mouse lemur was exposed to a particular odor, fixed at a preferred location, where the animal was trained to get a reward. The behavior of the mouse lemur toward the respective stimulus category was videotaped and quantified. Results showed that mouse lemurs avoided the place of odor presentation when the odor belonged to a predator. They reacted with a significantly enhanced activity when exposed to odors of carnivores compared to those of nonpredatory controls. These findings are in favor of a genetic predisposition of olfactory predator recognition that might be based on the perception of metabolites from meat digestion.     

Predicate Logical Extensions of some Subintuitionistic Logics

The paper presents predicate logical extensions of some subintuitionistic logics. Subintuitionistic logics result if conditions of the accessibility relation in Kripke models for intuitionistic logic are dropped. The accessibility relation which interprets implication in models for the propositional base subintuitionistic logic considered here is neither persistent on atoms, nor reflexive, nor transitive. Strongly complete predicate logical extensions are modeled with a second accessibility relation, which is a partial order, for the interpretation of the universal quantifier. Presented by Melvin Fitting