The ecology of spatial memory in four lemur species

Evolutionary theories suggest that ecology is a major factor shaping cognition in primates. However, there have been few systematic tests of spatial memory abilities involving multiple primate species. Here, we examine spatial memory skills in four strepsirrhine primates that vary in level of frugivory: ruffed lemurs (Varecia sp.), ring-tailed lemurs (Lemur catta), mongoose lemurs (Eulemur mongoz), and Coquerel’s sifakas (Propithecus coquereli). We compare these species across three studies targeting different aspects of spatial memory: recall after a long-delay, learning mechanisms supporting memory and recall of multiple locations in a complex environment. We find that ruffed lemurs, the most frugivorous species, consistently showed more robust spatial memory than the other species across tasks—especially in comparison with sifakas, the most folivorous species. We discuss these results in terms of the importance of considering both ecological and social factors as complementary explanations for the evolution of primate cognitive skills.     

UTILIZATION OF VIDEO MODELING COMBINED WITH SELF‐MONITORING TO INCREASE RATES OF ON‐TASK BEHAVIOR

The study investigated the effectiveness of an intervention package consisting of self‐monitoring and video modeling to increase on‐task behavior during independent seatwork time in math. Four students in either the second or third grade, identified as displaying high rates of off‐task behavior by their classroom teacher, were included in the study. Results showed immediate, large, and durable changes in on‐task behavior for each of the four participants. At baseline, on‐task behavior of the participants while working on independent math assignments was displayed in 47% of the intervals observed. During the intervention, the participants' average rate of on‐task behavior increased to 85% of the intervals observed. Mean Busk and Serlin (1994) effect size for all four participants was 5.60, with a percentage of non‐overlapping data points effect size of 100%. Observations of the participants 3 weeks following the termination of the study showed that the gains in on‐task behavior were maintained. Both teacher and participant feedbacks concerning the use and effectiveness of the intervention package were positive. Results of the investigation suggest that the intervention package may be an effective and socially valid method for addressing off‐task behaviors of students within the classroom. Copyright © 2014 John Wiley & Sons, Ltd.     

Examining Adolescent Cocaine Use with Social Learning and Self-Control Theories

An estimated 1.6 million adolescents use cocaine on a regular basis. Social learning theory and self-control theory are regularly used to explain adolescent substance use, but few studies have examined Hirschi’s (2004) revised self-control theory. This study examines the efficacy of these three theories in explaining adolescent cocaine use using data from the 2011 Monitoring the Future survey. The study finds that Hirschi’s (2004) revised theory and peer hard drug use predicted the probability of adolescent cocaine use in the previous 30 days. When examining cocaine use in the prior year, all three theoretical perspectives were significant predictor of cocaine use. The implications of the findings are discussed.     

Kant and the Discipline of Reason

Kant's notion of ‘discipline’ has received considerable attention from scholars of his philosophy of education, but its role in his theoretical philosophy has been largely ignored. This omission is surprising since his discussion of discipline in the first Critique is not only more extensive and expansive in scope than his other discussions but also predates them. The goal of this essay is to provide a comprehensive reading of the Discipline that emphasizes its systematic importance in the first Critique. I argue that its goal is to establish a set of rules for the use of pure reason that, if followed, will mitigate and perhaps even eliminate our tendency to make judgments about supersensible objects. Since Kant's justification for these rules relies crucially on claims he has defended in the Doctrine of Elements, I argue further that, far from being a dispensable part of the Critique as commentators have tended to claim, the Discipline is, in fact, the culmination of Kant's critique of metaphysics.     

Becoming a high‐fidelity – super – imitator: what are the contributions of social and individual learning?

In contrast to other primates, human children's imitation performance goes from low to high fidelity soon after infancy. Are such changes associated with the development of other forms of learning? We addressed this question by testing 215 children (26–59 months) on two social conditions (imitation, emulation) – involving a demonstration – and two asocial conditions (trial‐and‐error, recall) – involving individual learning – using two touchscreen tasks. The tasks required responding to either three different pictures in a specific picture order (Cognitive: Airplane→Ball→Cow) or three identical pictures in a specific spatial order (Motor‐Spatial: Up→Down→Right). There were age‐related improvements across all conditions and imitation, emulation and recall performance were significantly better than trial‐and‐error learning. Generalized linear models demonstrated that motor‐spatial imitation fidelity was associated with age and motor‐spatial emulation performance, but cognitive imitation fidelity was only associated with age. While this study provides evidence for multiple imitation mechanisms, the development of one of those mechanisms – motor‐spatial imitation – may be bootstrapped by the development of another social learning skill – motor‐spatial emulation. Together, these findings provide important clues about the development of imitation, which is arguably a distinctive feature of the human species.     

Sexual Health Risk Behaviors Among Older Men Who Have Sex With Men: Implications for Interventions

Sexual health risk behaviors, HIV and sexually transmitted infection (STI) transmission, substance use, stigma, and loneliness among older men who have sex with men are discussed. Implications for interventions are provided, including (a) assessment of health‐related risk behaviors, (b) brief interventions, (c) HIV and STI screening, and (d) relevant developmental and contextual factors.     

The Myth of the Angry Atheist

Atheists are often portrayed in the media and elsewhere as angry individuals. Although atheists disagree with the pillar of many religions, namely the existence of a God, it may not necessarily be the case that they are angry individuals. The prevalence and accuracy of angry-atheist perceptions were examined in 7 studies with 1,677 participants from multiple institutions and locations in the United States. Studies 1–3 revealed that people believe atheists are angrier than believers, people in general, and other minority groups, both explicitly and implicitly. Studies 4–7 then examined the accuracy of these beliefs. Belief in God, state anger, and trait anger were assessed in multiple ways and contexts. None of these studies supported the idea that atheists are particularly angry individuals. Rather, these results support the idea that people believe atheists are angry individuals, but they do not appear to be angrier than other individuals in reality.