Relative performance and implicit incentives in the intergroup prisoner’s dilemma

This paper illustrates how the payoff matrices of the single group Prisoner’s Dilemma (PD) and the Intergroup Prisoner’s Dilemma (IPD) differentially reinforce cooperation when participants care about relative performance. Examples of particular payoff patterns and thought experiments using a computational simulation demonstrate that withholding cooperation is not always the dominant strategy in the IPD. In the intergroup structure, three conditions differentially reinforce cooperation. When competing groups have equal numbers of cooperators, withholding cooperation is always the dominant strategy just as in the single group structure. In contrast, when one group has more cooperators than the other group, cooperation by its members can dominate withholding cooperation by members of the other group. Thus, the relative advantage of one group over another increases the payoff for cooperation in some configurations of the IPD over the payoff in the PD. Relative payoff is thus an untheorized variable motivating cooperation in the IPD.     

Bergmann’s dilemma: exit strategies for internalists

Michael Bergmann claims that all versions of epistemic internalism face an irresolvable dilemma. We show that there are many plausible versions of internalism that falsify this claim. First, we demonstrate that there are versions of “weak awareness internalism” that, contra Bergmann, do not succumb to the “Subject’s Perspective Objection” horn of the dilemma. Second, we show that there are versions of “strong awareness internalism” that do not fall prey to the dilemma’s “vicious regress” horn. We note along the way that these versions of internalism do not, in avoiding one horn of the dilemma, succumb to the dilemma’s other horn. The upshot is that internalists have many available strategies for avoiding dilemmatic defeat.     

Scylla and Charybdis: the purist’s dilemma

This paper explores the view that, on Mumford’s account of the purist, to the degree that the purist adopts an aesthetic perspective, he or she doesn’t watch the sport in question, and to the degree that he or she does watch the sport, there is a loss of aesthetic appreciation. The idea that spectators oscillate between partisanship and purism means that the purist is unable to avoid either the Scylla of not actually watching the sport, or the Charybdis of loss of aesthetic appreciation at any given point. Ultimately there seems to be both a sport-shaped hole and an aesthetic-shaped hole in Mumford’s account of the purist. It is argued that oscillation is incapable of dealing with the problem precisely because it is disjunctive in nature and entails the spectator either watching sport from an aesthetic perspective or from a partisan perspective at any given time. An alternative conception of the aesthetic is considered that offers one way of dissolving the purist’s dilemma.     

Interindividual–intergroup discontinuity in the prisoner’s dilemma game: How common fate,proximity, and similarity affect intergroup competition

In two experiments with the PDG we manipulated the Campbell (1958), or Wertheimer (1923), indices of entitativity (common fate, proximity, and similarity) to examine when a set of individuals interacts with another set of individuals in the competitive manner that is characteristic of group-on-group interactions. Experiment 1 found that interactions between two 3-person sets were more competitive when participants within each set shared (vs. did not share) common fate. In Experiment 2, the Wertheimer–Campbell indices were manipulated for one 3-person set only (targets). Participants in the other 3-person set were sequestered in separate rooms (observers). Observers as well as targets were more competitive when targets shared (vs. did not share) common fate. Path analyses in both experiments supported the idea that common fate increases competition via increased own-set entitativity and subsequent greed, and via increased other-set entitativity and subsequent fear. We found no consistent evidence for the possible roles of proximity and similarity.     

Expectation and cooperation in prisoner’s dilemmas: The moderating role of game riskiness

This paper investigated the effect of risk orientation, game riskiness, and expectation of cooperation on cooperation in one-shot prisoner’s dilemmas (PD). Participants in pairs played PD games that varied on game riskiness such that for half of the games cooperation was more risky than defection (more risky games) while for another half cooperation was less risky (less risky games). They estimated how likely it was that the other player was going to cooperate (expectation of cooperation) before they made their cooperation/defection decision on each game. Supporting the Goal/Expectation Hypothesis, we replicated the effect that expectation of cooperation enhanced cooperation. We also found that risk-seeking individuals cooperated more in more risky games whereas risk-averse individuals cooperated more in less risky games. More importantly, we found that game riskiness moderated the effect of expectation of cooperation on cooperation. The positive effect of expectation of cooperation on cooperation was stronger for more risky games than for less risky games. Our results illustrated how the relation between expectation and cooperation as stipulated by the Goal/Expectation Hypothesis was moderated by riskiness of the situations.     

Breastfeeding and offspring’s compassion and empathy in adulthood: A study with an over 30-year follow-up

This study investigated whether breastfeeding predicts offspring’s dispositional compassion and empathy from early adulthood to middle age. The parents of the participants (N = 1,394) of the Young Finns study answered questions about breastfeeding in 1983, and the participants’ compassion and empathy were evaluated in 1997‒2012 (participants were aged 20‒50 years). Breastfeeding did not predict the course of compassion or empathy in adulthood at the age of 20‒50 years. The associations remained non-significant, when adjusted for age, gender, socioeconomic factors, and a wide range of characteristics of the family environment (including mother’s gestational age; premature birth; birth weight; number of other children at home; parental mental disorder; parental relationship status; parental postnatal smoking; parental postnatal alcohol use; parenting behavior; and child’s externalizing behavior). In conclusion, breastfeeding seems not to predict offspring’s compassion or empathy in adulthood. The findings may present a hopeful perspective for children growing up with non-breastfeeding caregivers.     

Conventions,morals and strategy: Greta’s dilemma and the incarceration game

Synthese - I articulate the question of the value of common knowledge, or the question of why common knowledge is preferred to mere widespread knowledge. I argue that common knowledge often enjoys...     

Opposite haptic and visual induction effects observed with Titchener’s ⊥

Nineteen psychology undergraduates were requested to “grasp” the lines of a computer image of Titchener’s ⊥ with a thumb and index finger pincer grip immediately after the line to be grasped had been indicated and the whole figure extinguished. The hand remained visible. Lines were of three different lengths (6.5, 7, and 7.5 cm), and ⊥s were presented at eight different orientations (rotated in steps of 45°). Lines also had to be judged longer, shorter, or equal, relative to one another. Haptically, subjects responded correctly to the ⊥s’ undivided lines, but scaled their responses to the divided ones according to the undivided ones. Categorical judgments yielded comparable psychometric functions for both kinds of lines, with a significant shift of points of subjective equality from a difference in length between lines of 9.8% to 13.5% when the divided or the undivided line was target. Haptic sensitivity, therefore, appears to be constrained by context, whereas the classical “visual illusion,” associated with Titchener’s ⊥, may be regarded a mere decisional criterion shift.     

Working memory in healthy aging and in Parkinson’s disease: evidence of interference effects

Focusing on relevant information while suppressing the irrelevant one are critical abilities for different cognitive processes. However, their functioning has been scarcely investigated in the working memory (WM) domain, in both healthy and pathological conditions. The present research aimed to study these abilities in aging and Parkinson’s disease (PD), testing three groups of healthy participants (young, older and elderly) and one of PD patients, employing a new experimental paradigm. Results showed that the transient storing of irrelevant information in WM causes substantial interference effects, which were remarkable in elderly individuals on both response latency and accuracy. Interestingly, PD patients responded faster and were equally accurate compared to a matched control group. Taken together, findings confirm the existence of similar mechanisms for orienting attention inwards to WM contents or outwards to perceptual stimuli, and suggest the suitability of our task to assess WM functioning in both healthy aging and PD.     

Sport and children’s spirituality: an Australian perspective

The benefits of sport and physical activity are endorsed by a number of professionals as a means of improving children’s health and their sense of well-being, and their unity with the natural world, other people and the Transcendent. For children, sport is a spiritual source of joy and wonder. Using Champagne’s ‘spiritual modes of being’, my recent study of Victorian children demonstrated their heightened sensory awareness, enriched relationships and robust sense of personal identity, arising from active and passive participation in sport. The children in the study seemed to benefit in each of these areas from Australian culture’s high value of sporting participation and achievement.     

Animate being: an inquiry into Being in Heidegger’s Being and Time

Continental Philosophy Review - This paper questions the ontological integrity of Dasein as Heidegger specifies Being in Being and Time. It does so with reference to the real-life, real-time...     

State gratitude for one’s life and health after an acute coronary syndrome: Prospective associations with physical activity,medical adherence and re-hospitalizations

Abstract

Gratitude may be associated with beneficial health outcomes, but studies of this association have been mixed, and in these studies gratitude has often been conceptualized as a stable, unidimensional trait. We used four specific items to examine the prospective association of state- and domain-specific gratitude with medical outcomes among 152 patients with a recent acute coronary syndrome. State gratitude for one’s health 2 weeks post-event was associated with increased physical activity (measured via accelerometer) 6 months later, controlling for relevant demographic, social, medical and psychological factors (β = 340.9; 95% confidence interval = 53.4–628.4; p = .020). Gratitude for one’s life was associated with increased self-reported medical adherence at 6 months on the maximally adjusted model (β = .60; 95% confidence interval = .16–1.04; p = .008); no gratitude items were associated with rehospitalizations. In contrast, dispositional gratitude, measured by the Gratitude Questionnaire-6, was less dynamic and responsive to change over the 6-month period and was not associated with physical activity.     

The effects of instruction and environmental demand on state anxiety,driving performance and autonomic activity: Are ego-threatening manipulations effective?

A small yet emerging body of research on the relationship between anxiety and driving suggests that higher levels of state anxiety may lead to more dangerous driving behaviours. The aim of the current research was to investigate the effects of increased state anxiety on driving behaviours within a simulated environment using instructional sets to manipulate anxiety levels. In Study One, whilst a set of safety-related instructions were able to increase state anxiety, this did not result in changes to driving behaviours. In Study Two, ego-threatening instructions were not able to successfully increase state anxiety. This has implications regarding instructional sets in research, including their task relevance and the necessity for a motivational incentive. However, when changes in anxiety were considered regardless of instruction group, Study Two found changes in SDLP and skin conductance levels related to state anxiety increases. As these effects were context specific, it is argued that some of these changes may be due to poorer processing efficiency, leading to suggestions about the types of behaviours that may need to be trained in potential therapies for those who show high state anxiety levels whilst driving.     

Gemmules and Elements: On Darwin’s and Mendel’s Concepts and Methods in Heredity

Inheritance and variation were a major focus of Charles Darwin’s studies. Small inherited variations were at the core of his theory of organic evolution by means of natural selection. He put forward a developmental theory of heredity (pangenesis) based on the assumption of the existence of material hereditary particles. However, unlike his proposition of natural selection as a new mechanism for evolutionary change, Darwin’s highly speculative and contradictory hypotheses on heredity were unfruitful for further research. They attempted to explain many complex biological phenomena at the same time, disregarded the then modern developments in cell theory, and were, moreover, faithful to the widespread conceptions of blending and so-called Lamarckian inheritance. In contrast, Mendel’s approaches, despite the fact that features of his ideas were later not found to be tenable, proved successful as the basis for the development of modern genetics. Mendel took the study of the transmission of traits and its causes (genetics) out of natural history; by reducing complexity to simple particulate models, he transformed it into a scientific field of research. His scientific approach and concept of discrete elements (which later gave rise to the notion of discrete genes) also contributed crucially to the explanation of the existence of stable variations as the basis for natural selection.     

Automatic and strategic effects in semantic priming: An examination of Becker’s verification model

Becker’s (1980) verification model, in conjunction with a two-strategy hypothesis, is cited as an alternative to a dual-process model (e.g., Posner & Snyder, 1975) of word recognition and semantic priming. Becket’s approach suggests that individuals can use either an “expectancy” or a “prediction” strategy in word recognition, and maintains that the verification model successfully predicts certain patterns of facilitation and inhibition in a semantic priming task that a dual-process model cannot. The present study demonstrated that when a long stimulus-onset asynchrony (SOA = 1,000 msec) is used between prime and target, support is given to Becker’s findings, and to the verification model approach. However, at a short SOA (200 msec), no evidence is found for the hypothesized difference between strategic processes. The results are consistent with other findings (e.g., Neely, 1977) in showing that strategic factors in semantic priming are largely inoperative at short prime-target SOAs, and suggests that Becker’s model is not general enough to rule out some type of dual-process model.     

Necessity and Opportunity: the 1-Year Master’s ABA Program at Auburn University

The Auburn University Master of Science program in Applied Behavior Analysis was designed to accommodate not only the requirements of the Behavior Analyst Certification Board for approved course sequences and practicum training, but unavoidable limitations in faculty and other resources. These limitations were incompatible with the more traditional 2-year curriculum model, so a 1-year program was designed that met the necessary conditions. This article describes the resulting academic and practicum curriculum, the key funding mechanisms that allowed the program to develop, and the opportunities and benefits that this model afforded.     

Redefining Queer: Women’s Relationships and Identity in an Age of Sexual Fluidity

This paper examines ways some women work to define their sexual identities outside of or between traditional binary categories today. How does one’s own gender and the gender of one’s sexual and relationship partners through the life course affect the creation and maintenance of a sexual identity? Does our current system of sexual categories fit women’s experiences and identities? This study looks at women’s sexual experiences through an examination of female sex store patrons. Using Anthony Giddens theories of the pure relationship and plastic sexuality and ideas from queer theory alongside qualitative data about women’s sexual and relationship experiences, this paper sheds light on relationship and identity choices some American women are making today around their sexuality and provides new views on identity maintenance, gender, and sexual relationships.     

Meaning is in the beholder’s eye: Morpho-semantic effects in masked priming

A substantial body of literature indicates that, at least at some level of processing, complex words are broken down into their morphemes solely on the basis of their orthographic form (e.g., Rastle, Davis, & New, Psychonomic Bulletin and Review 11:1090–1098, 2004). Recent evidence has shown that this process might not be obligatory, as indicated by the fact that morpho-orthographic effects were not found in a cross-case same–different task—that is, when lexical access was not necessarily required (Duñabeitia, Kinoshita, Carreiras, & Norris, Language and Cognitive Processes 26:509–529, 2011). In this study, we employed a task that required understanding a series of words and, thus, implied lexical access. Masked primes were shown very briefly right before the appearance of the target word; prime–target pairs entertained a morpho-semantic (dealer–DEAL), a morpho-orthographic (corner–CORN), or a purely orthographic (brothel–BROTH) relationship. Eye fixation times clearly indicated facilitation for transparent pairs, but not for opaque pairs (or for orthographic pairs, which were used as a baseline). Conversely, the usual morpho-orthographic pattern was found in a control experiment, employing a lexical decision task. These results indicate that the access to a morpho-orthographic level of representation is not always necessary for lexical identification, which challenges models of visual word identification that cannot account for task-induced effects.     

What to Do in an Unjust State?: On Confucius’s and Socrates’s Views on Political Duty

Confucius argued for the centrality of the superior man’s political duty to his fellow human beings and to the state, while Socrates suggested that the superior man (the philosopher) may have no such political duty. However, Confucius also suggested that one not enter or stay—let alone save—a troubled state, while Socrates stayed in an unjust state, apparently fulfilling his political duty to the state by accepting an unjust verdict. In this essay, I will try to show how Confucius could solve these apparent contradictions. I will then examine the reasons Socrates directly and indirectly offers to resolve his seemingly conflicting positions in light of the discussion of the Confucian case. This article is a first step toward a deeper understanding of both Confucius and Socrates (Plato) by way of comparative studies, and of the general issue of a superior man’s political duty to a bad state.