Wright contra McDowell on perceptual knowledge and scepticism

One of the key debates in contemporary epistemology is that between Crispin Wright and John McDowell on the topic of radical scepticism. Whereas both of them endorse a form of epistemic internalism, the very different internalist conceptions of perceptual knowledge that they offer lead them to draw radically different conclusions when it comes to the sceptical problem. The aim of this paper is to maintain that McDowell’s view, at least when suitably supplemented with further argumentation (argumentation that he may or may not agree with), can be shown to be a viable alternative to Wright’s anti-sceptical proposal, one that retains the driving motivation behind Wright’s proposal while avoiding one of its most fundamental problems. Wright’s wholesale rejection of the McDowellian anti-sceptical strategy is thus premature.     

Adult Attachment in Children Raised by Parents with Schizophrenia

Maternal schizophrenia is known to have an adverse effect on the quality of mother–infant interaction; and children of parents with severe mental illness run a higher risk of poor mental health and social outcomes. Hence, children raised by a parent with schizophrenia may be less likely to attain secure attachment, although there is less evidence so far to support this. Moreover, there is a lack of research in this field that focusses on the needs and experiences, the strengths and vulnerabilities, of the children themselves. Qualitative methods are thus needed to generate new insights and hypotheses. The present study uses semi-structured interviews with 23 adults who, as children, were raised with a parent who experienced schizophrenia. This reveals a range of attachment problems, resulting in difficulties in forming secure adult relationships. Problems with trust and intimacy were found to be common.     

Numerical reproduction in pigeons

Pigeons were trained to match the number of responses made during a production phase to the number of keylight flashes (2, 4, or 6) in a previous sample phase. In Experiment 1, there were 2 conditions in which the flashes were programmed to occur at a constant rate or within a constant overall duration. For both conditions, although accuracy was relatively low, responding increased linearly with flash number and coefficients of variation decreased. Positive transfer to novel numbers was obtained only when test and baseline trials had the same temporal organization, but multiple regressions revealed significant control by number independently of temporal cues. In Experiment 2, flashes were programmed to occur pseudorandomly to degrade the validity of temporal cues. Results were similar to in Experiment 1. A prototype response class model accounted for the major features of the data. According to the model, responses during the production phase are shaped into higher order units that are associated with different stimulus numbers and function as a rough category scale of numerosity.     

Personal Political Salience: The Role of Personality in Collective Identity and Action

Personal political salience (PPS) is proposed as a personality characteristic that assesses individuals' linkage of political events with their personal identities. Its role in facilitating the development of politicized collective identity and action is examined. In four samples of midlife and activist women, we show that PPS was consistently related both to politicized gender identity and political participation. Further analyses show similar results for PPS, politicized racial identity, and political participation. Politicized gender identity mediated the relationship between PPS and women's rights activism, and politicized racial identity mediated the relationship between PPS and civil rights activism. PPS is demonstrated to independently predict political action and also to provide a personality link between group memberships, politicized collective identity, and political participation.     

Reconciliation and variation in post-conflict stress in Japanese macaques (Macaca fuscata fuscata): testing the integrated hypothesis

Reconciliation in primates, a post-conflict affiliative interaction between former opponents, appears to have two functions: (1) to repair relationship damaged by aggression such that animals who share more valuable relationships are more likely to reconcile, and (2) to reduce the post-conflict uncertainty and stress of former combatants. The 'integrated hypothesis' of reconciliation links these functions by arguing that the disturbance of a valuable relationship by aggression should result in particularly high levels of stress, which in turn should facilitate efforts to reconcile and thus gain relief from post-conflict stress. A key prediction of the integrated hypothesis is that victims of aggression suffer more stress following conflicts with individuals with whom they share a valuable relationship. In this article, we test the integrated hypothesis by observing the post-conflict behaviour of victims among a free-ranging provisioned troop of Japanese macaques (Macaca fuscata fuscata) living in Shiga Heights, Nagano, Japan. In this troop, monkeys reconciled roughly one in seven conflicts. The only factor that we could significantly relate to the occurrence of reconciliation was kinship; kin reconciled more frequently than non-kin did. Receiving aggression increased and reconciliation reduced the probability of being re-attacked after aggressive interactions, supporting the hypothesis that reconciliation repairs relationships. Victims' self-directed behaviour (SDB) – a behavioural index of stress comprising increases in scratching, self-grooming, and body-shaking – was elevated following aggression but decreased rapidly following reconciliation, supporting the idea that reconciliation functions to reduce post-conflict stress. Post-conflict SDB varied as follows: (1) victims showed a higher level of stress following aggression with kin than with non-kin, and (2) juvenile victims were less distressed than adults. The level of post-conflict SDB performed by juveniles following conflicts with kin was indistinguishable from that performed by adults but was greatly reduced following attacks from non-kin. These results indicate that post-conflict SDB keenly reflects the value of relationships between opponents, and that the post-conflict behaviour of free-ranging Japanese macaques fits the predictions of the integrated hypothesis. Accepted after revision: 11 September 2001 Electronic Publication