Understanding of and reasoning about object–object relationships in long-tailed macaques?

Diagnostic reasoning, defined as the ability to infer unobserved causes based on the observation of their effects, is a central cognitive competency of humans. Yet, little is known about diagnostic reasoning in non-human primates, and what we know is largely restricted to the Great Apes. To track the evolutionary history of these skills within primates, we investigated long-tailed macaques’ understanding of the significance of inclinations of covers of hidden food as diagnostic indicators for the presence of an object located underneath. Subjects were confronted with choices between different objects that might cover food items. Based on their physical characteristics, the shape and orientation of the covers did or did not reveal the location of a hidden reward. For instance, hiding the reward under a solid board led to its inclination, whereas a hollow cup remained unaltered. Thus, the type of cover and the occurrence or absence of a change in their appearance could potentially be used to reason diagnostically about the location of the reward. In several experiments, the macaques were confronted with a varying number of covers and their performance was dependent on the level of complexity and on the type of change of the covers’ orientation. The macaques could use a board’s inclination to detect the reward, but failed to do so if the lack of inclination was indicative of an alternative hiding place. We suggest that the monkeys’ performance is based on a rudimentary understanding of causality, but find no good evidence for sophisticated diagnostic reasoning in this particular domain.     

Are free testosterone and cortisol concentrations associated with training motivation in elite male athletes?

ObjectivesTo examine correlative associations between salivary free testosterone (T) and cortisol (C) concentrations and training motivation in elite male athletes.DesignSingle group, longitudinal design with repeated measures.MethodsParticipants (n = 15) completed a 5-week progressive resistance training programme. Across 2 weekly workouts, pre and post measures of salivary free T and C concentrations were taken along with voluntary chosen workload, as a proxy for training motivation. Strength and body mass were assessed pre and post training.ResultsIndividual changes in pre-workout free T concentrations correlated strongly to voluntary workloads (pooled r = 0.81, p < 0.001). Pre-workout free C concentrations was weakly correlated to voluntary workload (pooled r = 0.35). Pre-workout hormones (r = 0.57–0.89) and the strength gains were also related.ConclusionsThe salivary free T concentrations of male athletes presented before training were strongly associated with subsequent voluntary workloads, indicating a potential link to training motivation.     

Buddhism and Quantum Physics

Rudyard Kipling, the famous English author of The Jungle Book, born in India, wrote one day these words: ‘Oh, East is East and West is West, and never the twain shall meet’. In my paper I show that Kipling was not completely right. I try to show the common ground between Buddhist philosophy and quantum physics. There is a surprising parallelism between the philosophical concept of reality articulated by Nāgārjuna and the physical concept of reality implied by quantum physics. For neither is there a fundamental core to reality; rather, reality consists of systems of interacting objects. Such concepts of reality cannot be reconciled with the substantial, subjective, holistic or instrumentalistic concepts of reality that underlie modern modes of thought.     

Altruistic Discourse in the Informed Consent Process for Childhood Cancer Clinical Trials

Scholars have debated the role that altruistic considerations play—and should play—in recruitment and decision-making processes for clinical trials. Little empirical data are available to support their various perspectives. We analyzed 140 audiotaped pediatric informed consent sessions, of which 95 (68%) included at least one discussion of how participation in a cancer clinical trial might benefit: 1) the pursuit of scientific knowledge generally; 2) other children with cancer specifically; and 3) “the future” and other vaguely defined recipients. Clinicians initiated most (80%) of these discussions of altruism. The enrollment rate of children in the clinical trial was high (83%) overall, but not higher among children whose parents were involved in an altruism-oriented discussion. These findings suggest that: (1) clinicians invoke a spectrum of altruistic considerations rather than a single monothematic notion of altruism, and (2) the effect of altruistic considerations on subsequent enrollment decisions is marginal. While further research on this topic is warranted, bioethical debate should strive to reflect the diversity of altruistic discourse in clinical research encounters and to place this discourse in the context of other, including nonaltruistic, considerations.     

Critique of the Premises and Statistical Methodology of Parapsychology

A city-wide campaign involving various channels of communication was conducted to obtain high school seniors for a survey. Of the 102 seniors who telephoned to make appointments, 56 later attended their assigned questionnaire session. The rate of attendance differed for the communication channels. Newspaper advertisements attracted the most telephone calls but had the lowest attendance rate; notices on bulletin boards in city recreation centers produced the fewest telephone calls but had the highest attendance rate. Other channels, including personal contact, were intermediate in effectiveness. Additional findings were that nonpersonal channels differed in influence, and that exposure through multiple channels resulted in more influence than exposure through only one. The implications of the findings, especially for conceptualizations of channel influence, were noted.     

Evaluative conditioning depends on higher order encoding processes

Evaluative conditioning (EC) is commonly conceived as stimulus-driven associative learning. Here, we show that internally generated encoding activities mediate EC effects: Neutral conditioned stimuli (CS) faces were paired with positive and negative unconditioned stimuli (US) faces. Depending on the encoding task (Is CS a friend vs. enemy of US?), Experiment 1 yielded either normal EC effects (CS adopting US valence) or a reversal. This pattern was conditional on the degree to which encoding judgements affirmed friend or enemy encoding schemes. Experiments 2a and 2b replicated these findings with more clearly valenced US faces and controlling for demand effects. Experiment 3 demonstrated unconditional encoding effects when participants generated friend or enemy relations between CS and US faces. Explicitly stated friend or enemy relations in Experiment 4 left EC effects unaffected. Together, these findings testify to the importance of higher order cognitive processes in conditioning, much in line with recent evidence on the crucial role of conditioning awareness.     

On the use of discrimination to assess memory

A number of studies have made use of sensory discrimination to assess memory. These experiments have typically employed a temporal two-alternative forced choice paradigm in which the interstimulus interval (ISI) is varied. Many of these tests have shown that ISI has little or no effect on discrimination performance. This has been taken as evidence for perfect or very good memory. An alternative interpretation would be that discrimination tests lack sufficient sensitivity to reveal memory effects. In the present study, computer simulations based on signal detection theory were used to estimate the relative effects of memory noise and direct noise (i.e., noise inherent in the discrimination task) on discrimination performance. These simulations indicate that the amount of memory noise has to be quite large to cause a marked elevation in discrimination thresholds and that sensory discrimination is a relatively insensitive test of memory.     

Can Competition Ever be Fair? Challenging the Standard Prejudice

In this paper, we challenge the usual argument which says that competition is a fair mechanism because it ranks individuals according to their relative preferences between effort and leisure. This argument, we claim, is very insufficient as a justification of fairness in competition, and we show that it does not stand up to scrutiny once various dynamic aspects of competition are taken into account. Once the sequential unfolding of competition is taken into account, competition turns out to be unfair even if the usual fairness argument is upheld. We distinguish between two notions of fairness, which we call U-fairness, where U stands for the usual fairness notion, and S-fairness, where S stands for the sequential aspect of competition. The sequential unfairness of competition, we argue, comprises two usually neglected aspects connected with losses of freedom: first of all, there is an eclipse of preferences in the sense that even perfectly calculating competitors do not carry out a trade-off between effort and ranking; and second, competitive dynamics leads to single-mindedness because the constraints on the competitors choices always operate in the sense of increased competitiveness and, therefore, in the direction of an increased effort requirements. We argue (1) that competition is S-unfair even if it is U-fair, (2) that as S-unfairness increases, the ethical relevance of U-fairness itself vanishes, so that (3) by focusing as they usually do on U-fairness alone, economists neglect a deeper aspect of unfairness.     

When organizational climate is unambiguous, it is also strong

Several recent studies have addressed the topic of climate strength--the degree to which there is agreement among an organization's members regarding the practices and policies as well as the shared values that characterize the organization. To further investigate antecedents of climate strength, the authors used data from the GLOBE Project, totaling 3,783 individuals from 123 organizations. The authors hypothesized that they would find greater climate strength in organizations with climates reflecting mechanistic as opposed to organic organizational forms. Although the authors did in fact find such a trend, they also unexpectedly uncovered significant and strong nonlinear effects, such that climates that are clearly mechanistic or clearly organic have strong climates, with weaker climates emerging for organizations with more ambiguous climates. These findings provide interesting new avenues to pursue in understanding the origins of climate strength.