Expectation of outgroup behaviour: can you trust the outgroup?

Outgroups are usually viewed with suspicion and expected to discriminate against the ingroup. The present study demonstrated that ingroup members attributed past discriminatory behaviour committed by individuals of unknown group membership more to outgroup members than to either ingroup members or members of a neutral group. In contrast, past egalitarian behaviour was attributed less to outgroup members than to members of a neutral group. Ingroup members also expected more discrimination from a future outgroup allocator than from a future neutral group allocator. Finally, the study showed that ingroup members' own behaviour in allocating money became more biased in favour of ingroup members vis-á-vis outgroup members when the future allocator was from an outgroup rather than from a neutral group and when they had witnessed the discriminatory behaviour of an allocator in the past.     

Effect of prior body experience on adaptation to visual displacement

The effect of proprioceptive adaptation to visual displacement is to produce a violation of the normal constraints on the relative position of body parts. In order to investigate the effect of this violation of constraints on the adaptation, the relative position of body parts for a group of dancers and a group of nondancers was determined after 5 and 15 min of adaptation. Empirical and theoretical support were provided for the propositions that (1) there is a tendency to resist the violation of constraints, and (2) the nature of the adaptation process is such as to minimize the amount of violation of constraints.     

Prevalence of behavioral symptoms in rural elementary school children

Third- and fourth grade children attending rural midwestem elementary schools were assessed for the presence of fiftyfive behavior symptoms. In general, prevalence rates were higher for boys and reflected behavioral patterns commonly associated with conduct problems and immaturity. More neurotic forms of behavior were reported for girls. Additionally, an increase in symptoms per sex across grade level was found with fourth grade girls showing an increase common to the conduct disorder cluster.     

Production deficits in aphasia: A voice-onset time analysis

An experimental study was conducted to examine phonetic and phonemic deficits in the speech production of aphasics. Subjects included four Broca's aphasics, four Conduction aphasics, five Wernicke's aphasics, one nonaphasic dysarthric patient, and four normal controls. The subjects read a list of words containing word-initial stop consonants which were subsequently measured acoustically for voice-onset time. The results showed that Broca's aphasics exhibit a more severe production disorder than Conduction aphasics who in turn exhibit a more severe disorder than Wernicke's aphasics, in accord with clinical observations. In addition, although Broca's aphasics produced both phonetic and phonemic errors, the results showed that they have a pervasive phonetic disorder which affects their correct target productions as well as the total number of phonetic errors produced. This deficit however seems to be a speech deficit rather than a low-level motor control problem. In contrast, the Wernicke's aphasics show a deficit characterized by isolated phonemic mistargeting errors. Finally, the pattern of productions for the Conduction aphasics indicates that some patients show a predominantly phonetic disorder similar to the Broca's aphasics and others show predominantly a phonemic disorder similar to the Wernicke's aphasics.     

Time went by so slowly: Overestimation of event duration by males and females

In three experiments, 469 subjects watched a short videotape of a bank robbery and later estimated the duration of the tape. Subjects invariably overestimated the durations. Accuracy of time estimation was unrelated to amount of free recall (Experiment 1) or accuracy of memory (Experiment 2). Females overestimated to a greater degree than males (Experiments 2 and 3). A more stressful version of the event produced greater overestimates than a less stressful version (Experiment 3). The relationship between induced arousal and time estimation appears to be different for men and women.     

Physicalism, Teleology and the Miraculous Coincidence Problem

I focus on Fodor's model of the relationship between special sciences and basic physics, and on a criticism of this model, that it implies that the causal stability of, e.g., the mental in its production of behaviour is nothing short of a miraculous coincidence. David Papineau and Graham Macdonaldendorse this criticism. But it is far less clear than they assume that Fodor's picture indeed involves coincidences, which in any case their injection of a teleological supplement cannot explain. Papineau's and Macdonald's problem is subtly different from a similar one presented by Adrian Cussins. This is no more effective against Fodor's picture, but the kind of account of the relation between the physical and the psychological which could constitute a solution to Cussins' problem is one which, for independent reasons, a physicalist of Fodor's stripe ought to provide.     

Deployment of spatial attention to words in central and peripheral vision

Four perceptual identification experiments examined the influence of spatial cues on the recognition of words presented in central vision (with fixation on either the first or last letter of the target word) and in peripheral vision (displaced left or right of a central fixation point). Stimulus location had a strong effect on word identification accuracy in both central and peripheral vision, showing a strong right visual field superiority that did not depend on eccentricity. Valid spatial cues improved word identification for peripherally presented targets but were largely ineffective for centrally presented targets. Effects of spatial cuing interacted with visual field effects in Experiment 1, with valid cues reducing the right visual field superiority for peripherally located targets, but this interaction was shown to depend on the type of neutral cue. These results provide further support for the role of attentional factors in visual field asymmetries obtained with targets in peripheral vision but not with centrally presented targets.     

Iffy beliefs: Conditional thinking and belief change

The ability to entertain possibilities and draw inferences about them is essential to human intelligence. We examine the hypothesis that conditional if-then statements trigger a mental simulation process in which people suppose the antecedent (if statement) to be true and evaluate the consequent (then statement) in that context. On the assumption that supposing an event to be true increases belief that the event has occurred or will occur, this hypothesis is consistent with the claim that evaluating a conditional will heighten belief in its antecedent more than in its consequent. Two experiments, employing conditionals of the form If animal A has property X, then animal B will have property X, in which X was a property that people could not readily relate to the animals, supported this claim. The effect was stronger following the evaluation of conditionals with dissimilar animal categories.