Asymmetrical sample training produces asymmetrical retention functions in feature-present/feature-absent matching in pigeons

Pigeons were trained in a matching task in which samples involved presentation of a white line on a green background (feature-present) or on an otherwise dark key (feature-absent). After asymmetrical training in which one group was initially trained with the feature-present sample and another was initially trained with the feature-absent sample, marked retention asymmetries were obtained. In both groups, accuracy dropped precipitously on trials involving the initially trained sample and remained high on trials involving the sample introduced second in training. It was concluded that asymmetrical training encouraged a single-code/default strategy in which only the sample trained initially was coded. Consistent with this conclusion, changing attributes of either sample reduced accuracy to a greater extent in pigeons initially trained with that sample than in pigeons for which that sample was introduced second in training.     

Self‐reference and group membership: evidence for a group‐reference effect

Two experiments were designed to explore whether encoding information in reference to a group would facilitate the later recall of that information to the same extent as encoding with reference to the self. In both experiments, participants encoded adjectives with reference to the self, semantic properties, or a group and were subsequently given a surprise‐free recall test. In Experiment 1 (N = 37), the participants' university served as the reference group. In Experiment 2 (N=41), the participants' family served as the reference group. In both experiments, self‐reference resulted in better recall than semantic processing, replicating the typical self‐reference effect (SRE). More importantly, strong evidence for a group‐reference effect (GRE) was found in that group‐reference resulted in better recall than semantic processing and in fact facilitated recall to the same extent as self‐referencing. The existing explanations (schemas, organization, elaboration, mental cueing, and evaluation) for the SRE were compared with regard to their viability in accounting for the GRE patterns. We discuss additional features that may be important in the explanation of the SRE and suggest future directions for research on group‐referencing. Copyright © 2002 John Wiley & Sons, Ltd.     

The Poly-Drug User: Examining Associations between Drugs Used by Adolescents

Based on data from the 2014 Communities that Care Youth Survey, the authors examine the associations between drug use frequencies among 11 drugs. This research represents a step in determining what leads to the use of dangerous drugs like heroin, other opioids, and other not so dangerous substances. Findings indicate the highest association is between marijuana and alcohol use. Most drugs show at least a low to medium association with all other drugs. Findings indicate the difficulty in making gateway assumptions and that poly-drug use determined by peer associations is a better explanation.     

The Effects of Social Concern on White-Collar Offending

This study tested Agnew’s social concern theory by examining empathy’s role on both street and white-collar offenses. As Agnew argued social concern elements would have both moderating and mediating effects with other causes of crime, how empathy interacted with low self-control was also assessed. Using an undergraduate sample, empathy was protective of credit card fraud, embezzlement, and shoplifting intentions. Although empathy did not interact with low self-control, empathy had indirect effects on shoplifting and embezzlement through its effects on low self-control. Empathy mediated the effects of low self-control on credit card fraud. Theoretical and policy implications are discussed.     

The Role of Inference in Attribute Framing Effects

Previous research has shown that a speaker's choice between logically equivalent frames is influenced by reference point information, and that listeners draw accurate inferences based on the frame. Less clear, however, is whether these inferences play a causal role in generating attribute framing effects. Two experiments are reported, which suggest that frame‐dependent inferences are sufficient to generate attribute framing effects, and that blocking such inferences may block framing effects. Experiment 1 decomposed the typical framing design into two parts: One group of participants saw a target described in one of two attribute frames and reported their estimates (inferences) of the typical attribute value. These estimates were then given to a second group of yoked participants, who evaluated the target. Although this latter group was not exposed to different attribute frames, they nevertheless exhibited a “framing effect” as a result of receiving systematically different inferences. In contrast, Experiment 2 shows that experts—who are familiar with an attribute's distribution and are therefore less likely to draw strong frame‐based inferences—exhibit a diminished framing effect. Together, these findings underscore the role of inferences in the generation and attenuation of attribute framing effects. Copyright © 2017 John Wiley & Sons, Ltd.     

The road to two theorems of logic

Work on how to axiomatize the subtheories of a first-order theory in which only a proper subset of their extra-logical vocabulary is being used led to a theorem on recursive axiomatizability and to an interpolation theorem for first-order logic. There were some fortuitous events and several logicians played a helpful role.     

Gender Differences in Aggression: The Role of Status and Personality in Competitive Interactions

Southwest US undergraduates (78 female, 72 male) were tested in a laboratory aggressive behavior paradigm involving noise blasts participants could use against another (bogus) same-sex competitor in a point-earning task. Status of the competitor (low vs. high) and expectation to meet the competitor (meet vs. no meet) were experimentally manipulated. A significant gender × aggression proneness × status interaction indicated that aggression-prone men were more likely to aggress against a high status competitor, while aggression-prone women were more likely to aggress against a low status competitor. Interactions of narcissism and sensation seeking with gender and anticipated meeting indicated that men but not women high in these personality traits were more likely to aggress, but only towards competitors they anticipated meeting.     

Gender Differences in Correlates of Homophobia and Transphobia

A scale of prejudice against transgender individuals was developed, validated, and contrasted with a homophobia measure in 153 female and 157 male US college undergraduates. For both sexes, transphobia and homophobia were highly correlated with each other and with right-wing authoritarianism, religious fundamentalism, and hostile sexism, but aggression proneness was predictive of transphobia and homophobia only in men. Benevolent sexism and rape myth acceptance were more predictive of transphobia and homophobia in women than men. With homophobia partialled out, authoritarianism, fundamentalism, and aggression proneness no longer predicted transphobia for men, but authoritarianism, fundamentalism, benevolent sexism, and rape myth acceptance continued to predict transphobia in women. Discussion focused on gender differences in issues that drive prejudice against transgender and homosexual individuals.