Take it or leave it for something better? Responses to fair offers in ultimatum bargaining

We investigated if responders accept a 50–50 split in a modified version of the ultimatum game, in which rejection yields a higher payoff (€7) than accepting the equal offer (€5). Therefore, the decision to accept the 50–50 split in this modified ultimatum game cannot be perceived as a self-interest act, as opposed to the standard game, in which acceptance may reflect resignation in the knowledge that the equal split is the best one can expect. A substantial proportion of responders accepts the equal split in this modified game (Study 1), which clearly establishes egalitarian preferences. Further studies show that the willingness to accept is not an artifact of indifference towards the extra payoff (Study 2), but reflects true concerns for proposers’ outcomes (Study 3).     

A descriptive study of facial expressions during Brazelton Neonatal Behavior Assessments

The facial expressions of 96 term and preterm neonates were recorded during the Brazelton Neonatal Behavior Assessment. The expressions that occurred most frequently during the neurological reflex items were interest, disgust, sadness, and crying. The predominant facial expression during the orienting items was that of interest. Although happy and surprised faces were more common during the orienting than the reflex items, they occurred very infrequently. Some of the reflex items elicited more negative expressions than others and some of the orienting items elicited more frequent expressions than others and some of the orienting items elicited more frequent expressions of interest than others, suggesting that facial expressions might reflect the degree to which the stimuli were experienced as pleasant or unpleasant and more or less interesting. Although the examiner's face and voice were more effective than inanimate stimuli in eliciting positive expressions in term neonates, the reverse was true for preterm neonates. Thus facial expressions may provide additional information on the degree to which neonates experience stimulation as pleasant/unpleasant and on individual differences in responsiveness to physical and social stimulation.     

The person response function as a tool in person-fit research

Item responses that do not fit an item response theory (IRT) model may cause the latent trait value to be inaccurately estimated. In the past two decades several statistics have been proposed that can be used to identify nonfitting item score patterns. These statistics all yieldscalar values. Here, the use of the person response function (PRF) for identifying nonfitting item score patterns was investigated. The PRF is afunction and can be used for diagnostic purposes. First, the PRF is defined in a class of IRT models that imply an invariant item ordering. Second, a person-fit method proposed by Trabin & Weiss (1983) is reformulated in a nonparametric IRT context assuming invariant item ordering, and statistical theory proposed by Rosenbaum (1987a) is adapted to test locally whether a PRF is nonincreasing. Third, a simulation study was conducted to compare the use of the PRF with the person-fit statistic ZU3. It is concluded that the PRF can be used as a diagnostic tool in person-fit research.The authors are grateful to Coen A. Bernaards for preparing the figures used in this article, and to Wilco H.M. Emons for checking the calculations.     

Focused attention reduces the effect of lateral interference in multi-element arrays

Lateral interference of nearby irrelevant flankers may be reduced when attention is already focused at a relevant position. This hypothesis was tested in three experiments with multi-element arrays consisting of one target and several neutral flankers with reaction time (RT) and proportion of errors (PE) as dependent variables. The arrays were preceded by peripheral cues that varied in size to induce different levels of focused attention. In a first experiment, the eccentricity effect was shown to be affected by attention, but no support was found for a reduction of lateral interference in the case of focused attention. However, these results may be due to an attentional bias for central elements. Two additional experiments were performed in which target-flanker distance was manipulated. RTs and PEs showed that the effect of target-flanker distance was smaller when the precise target position was indicated by a peripheral precue. Thus, focused attention seems to reduce the effect of lateral interference. These results can be explained most easily by a model in which attention already affects early perceptual processing. Received: 11 January 2000 / Accepted: 3 December 2000     

The SYBAR system: Integrated recording and display of video, EMG, and force plate data

A new system—called SYBAR—is introduced, that employs digital video for registration of the movements of a patient while simultaneously recording electromyogram signals of relevant muscles and ground reaction forces (for the lower extremities in gait studies). All information is stored in a multimedia record, which can be viewed by the clinician with a simple user interface. This setup allows an integrated and more detailed view of the movement of the patient and related information (i.e., muscle physiology). It is used by clinicians to assess the causes of movement disorders in their patients. This paper describes the SYBAR system and focuses on the employed methods of data synchronization for both the time and the spatial domains. It is concluded that, although SYBAR was developed for clinical gait studies, the technology can be applied in all situations in which the relation between physiological signals and human or animal behavior is studied.     

Organising Learning in Work Contexts

On assiste dans le domaine du développement des ressources humaines à un passage de l’optique formation à la perspective apprentissage. La formation est de plus en plus perçue comme seulement l’une des solutions disponibles pour mettre en place les processus d’apprentissage dans les organisations de travail, et pas toujours comme étant la plus efficace. Les autres formes d’apprentissage ont pris beaucoup d’importance dans la dernière décennie, en particulier celles étroitement reliées au travail quotidien, sur le lieu de travail et dans le cadre élargi de la culture organisationnelle qui devient un puissant outil d’apprentissage. Après avoir retracé l’histoire du passage de la formation à l’apprentissage, l’article propose trois orientations pour de futures investigations: le travail comme facteur potential d’apprentissage, l’apprentissage sur le lieu de travail et les environnements formateurs. A l’intérieur de chacun de ces thèmes, on analyse d’éventuelles pistes de recherche et quelques problématiques stimulantes sont présentées. The field of human resource development is in the process of shifting from a training to a learning orientation. Increasingly, training is viewed as just one possible way to organise learning processes in work organisations, and not always the most effective one. Other ways of organising learning processes have gained much interest in the last decade, particularly those closely related to everyday work, in the context of the workplace, and in the broader organisational culture as a powerful learning environment. After explaining the history of the shift from training to learning, the article proposes three domains for further research: (1) the learning potential of work, (2) learning in the workplace, and (3) learning environments. Within each of these themes, possible research avenues are discussed and some challenging research questions are put forward.     

Career guidance in Northern Ireland: retrospect and prospect

The history of careers guidance in Northern Ireland has many similarities but also many differences from experiences in other parts of the UK. The Careers Service has remained within central government for the duration, and this has provided a degree of consistency in service provision over time. In line with the Department for Employment and Learning's Corporate Plan for 2005-2008, the new Careers Service for Northern Ireland will aspire to be an all-age guidance service. The development of careers education provision in the education sector is examined, as is the emergence of adult guidance as a province-wide provision. Issues considered include staffing, training, evaluation, targeting need, the merits and demerits of locating the Careers Service within the Civil Service, and potentially conflicting responsibilities to clients and to the employing department.     

The role of feedback information for calibration and attunement in perceiving length by dynamic touch

Two processes have been hypothesized to underlie improvement in perception: attunement and calibration. These processes were examined in a dynamic touch paradigm in which participants were asked to report the lengths of unseen, wielded rods differing in length, diameter, and material. Two experiments addressed whether feedback informs about the need for reattunement and recalibration. Feedback indicating actual length induced both recalibration and reattunement. Recalibration did not occur when feedback indicated only whether 2 rods were of the same length or of different lengths. Such feedback, however, did induce reattunement. These results suggest that attunement and calibration are dissociable processes and that feedback informs which is needed. The observed change in variable use has implications also for research on what mechanical variables underlie length perception by dynamic touch.