The physician-researcher conflict of interest, a long-standing and widely recognized ethical challenge of clinical research, has thus far eluded satisfactory solution. The conflict is fairly straightforward. Medical research and medical therapy are distinct pursuits; the former is aimed at producing generalizable knowledge for the benefit of future patients, whereas the latter is aimed at addressing the individualized medical needs of a particular patient. When the physician-researcher combines these pursuits, he or she serves two masters and cannot — no matter how (...) well-intentioned — avoid the risk of compromising the duties owed in one of the professional roles assumed. Because of the necessary rigidity of a research protocol, the more demanding of the two masters is frequently the research.The problem of the physician-researcher conflict has been evident since the first attempts to regulate human research in the United States. Otto E. Guttentag, a physician at the University of California School of Medicine in San Francisco, addressed the conflict in a 1953Sciencemagazine article. (shrink)

Human expression is open-ended, versatile, and diverse, ranging from ordinary language use to painting, from exaggerated displays of affection to micro-movements that aid coordination. Here we present and defend the claim that this expressive diversity is united by an interrelated suite of cognitive capacities, the evolved functions of which are the expression and recognition of informative intentions. We describe how evolutionary dynamics normally leash communication to narrow domains of statistical mutual benefit, and how expression is unleashed in humans. The relevant (...) cognitive capacities are cognitive adaptations to living in a partner choice social ecology; and they are, correspondingly, part of the ordinarily developing human cognitive phenotype, emerging early and reliably in ontogeny. In other words, we identify distinctive features of our species' social ecology to explain how and why humans, and only humans, evolved the cognitive capacities that, in turn, lead to massive diversity and open-endedness in means and modes of expression. Language use is but one of these modes of expression, albeit one of manifestly high importance. We make cross-species comparisons, describe how the relevant cognitive capacities can evolve in a gradual manner, and survey how unleashed expression facilitates not only language use, but also novel behaviour in many other domains too, focusing on the examples of joint action, teaching, punishment, and art, all of which are ubiquitous in human societies but relatively rare in other species. Much of this diversity derives from graded aspects of human expression, which can be used to satisfy informative intentions in creative and new ways. We aim to help reorient cognitive pragmatics, as a phenomenon that is not a supplement to linguistic communication and on the periphery of language science, but rather the foundation of the many of the most distinctive features of human behaviour, society, and culture. (shrink)

A long‐standing debate in the study of human communication centers on the degree to which communicators tune their communicative signals (e.g., speech, gestures) for specific addressees, as opposed to taking a neutral or egocentric perspective. This tuning, called recipient design, is known to occur under special conditions (e.g., when errors in communication need to be corrected), but several researchers have argued that it is not an intrinsic feature of human communication, because that would be computationally too demanding. In this study, (...) we contribute to this debate by studying a simple communicative behavior, communicative pointing, under conditions of successful (error‐free) communication. Using an information‐theoretic measure, called legibility, we present evidence of recipient design in communicative pointing. The legibility effect is present early in the movement, suggesting that it is an intrinsic part of the communicative plan. Moreover, it is reliable only from the viewpoint of the addressee, suggesting that the motor plan is tuned to the addressee. These findings suggest that recipient design is an intrinsic feature of human communication. (shrink)

We investigate partner effects on spatial perspective taking behavior in listeners, comparing behavior with a human versus a computer partner (Experiments 1 and 2), and with computer partners of different perceived capabilities (Experiment 3). Participants responded to spoken instructions from their partner which could be interpreted egocentrically (from their own perspective) or othercentrically (from their partner's perspective). In contrast to earlier work, we found that participants were more egocentric with a computer than a human partner. Participants were also more egocentric (...) with a computer partner that appeared more modern and capable, compared to one that appeared outdated and limited in ability. Our results show that perspective taking behavior is sensitive to information about one's partner; in particular, listeners consider their partner's potential ability to collaborate, adjusting their egocentric tendencies accordingly. Moreover, we highlight what appears to be a shift in listeners' expectations regarding computers' collaborative capabilities, leading to greater willingness to push the burden of perspective taking onto a computer partner. (shrink)

Nach einem Überblick über die Unterscheidung von Pausen, Schweigen und Stille und einer knappen Diskussion älterer Auffassungen zum Schweigen in therapeutischen Sitzungen wird ein theoretischer Bezugsrahmen entworfen. Danach sind Pausen nicht Gegensatz, sondern Element der Konversation und sie können nicht individuell zugerechnet werden, weil der andere sie gewährt. Das unterscheidet sie vom Schweigen. Es werden Transkriptbeispiele therapeutischer Situationen analysiert, in denen Pausen vorkommen. Sie lassen sich als Folgen von Ereignissen vor der Pause analysieren. Der theoretische Hintergrund ist die Konversationsanalyse, die (...) Anschluss an neurowissenschaftliche Überlegungen zu Sprechpausen gewinnt. Gesprächsstrukturelle Momente und motivationale Zusammenhänge lassen sich auf der Annahme von Harvey Sacks, des Begründers der Konversationsanalyse, zusammenführen: Jede Konversation wird von einer stillen Dimension, die er »my-mind-is-with-you« nannte, begleitet. (shrink)

In the absence of pre‐established communicative conventions, people create novel communication systems to successfully coordinate their actions toward a joint goal. In this study, we address two types of such novel communication systems: sensorimotor communication, where the kinematics of instrumental actions are systematically modulated, versus symbolic communication. We ask which of the two systems co‐actors preferentially create when aiming to communicate about hidden object properties such as weight. The results of three experiments consistently show that actors who knew the weight (...) of an object transmitted this weight information to their uninformed co‐actors by systematically modulating their instrumental actions, grasping objects of particular weights at particular heights. This preference for sensorimotor communication was reduced in a fourth experiment where co‐actors could communicate with weight‐related symbols. Our findings demonstrate that the use of sensorimotor communication extends beyond the communication of spatial locations to non‐spatial, hidden object properties. (shrink)

In an ordinary interaction, communicants have various, mostly unconscious goals which reflect their interactional, social and personal needs. In these interactions, people’s minds try to find a balance between reaching these goals and consuming cognitive energy. If a speaker puts too little effort into speech production, she risks not achieving her communicative goals. This is especially typical when the atmosphere is relaxed, a good example of which is family discourse. An analysis of recorded conversations shows that there are certain regular (...) manifestations of risk-taking in family discourse, such as expressing immature thoughts, raising a large variety of topics and overguessing. A substantial amount of risk-taking in family discourse is in one way or another connected with false confidence in the interlocutors’ common ground. Family members know each other well, which results in an overestimation of the similarity of their understanding of words and objects. This attitude leads them to use cryptic, hard-to-comprehend speech. Quick, everyday interactions are mostly automated, and the speakers do not recognise that their speech is full of implicitness and underdeterminacy. (shrink)