On progress,values, and Marx

Marx, like many of his contemporaries, uncritically assumed that humanity develops from primitive beginnings to ever more perfect stages. In his theory of human development he measured progress by two main standards: the decrease of all forms of dependence, and the increase of universality in man's relations to nature and to his fellow man. In our century, not only have new structures of power and dependence emerged, but successive movements have also been generated to restore the more ordered and limited relationships of the past. If belief in progress is nowadays no longer self-evident, such a state of affairs can help us reflect on the conditions necessary to realize the values which determined Marx's categorical imperative, or his insistence that we overthrow all relations by which man is made a debased and enslaved being. One of these conditions is the voluntary limitation of our needs: the need to use material goods without regard for others, the need to build up or maintain security even at the cost of violence, and the need to restrict the circle of those with whom we identify to our own particular culture, race, class or ways of thinking and acting.     

Process traces of binary choices: Evidence for selective and adaptive decision heuristics

While previous research has shown that human decision processes adjust to the characteristics of choice situations and task demands, the present study examined whether information processing would even adapt to the characteristics of an individual choice pair. By a process tracing method it was found that the amount of inspected information systematically depended upon the particular choice pair. In order to specify the selective and adaptive information processing, criterion-dependent choice models were introduced. These models postulate that information processing continues until the accumulated amount by which one alternative is better than the other reaches or exceeds a certain criterion. These models are strongly supported by the empirical data of the present study. Deviations between model predictions and observed data are explained in terms of fluctuating feature values of the choice alternatives.     

Reconsidering the role of language in medicine

Background

Despite an expansive literature on communication in medicine, the role of language is dealt with mostly indirectly. Recently, narrative medicine has emerged as a strategy to improve doctor-patient communication and integrate patient perspectives. However, even in this field which is predicated on language use, scholars have not specifically reflected on how language functions in medicine.

Methods

In this theoretical paper, the authors consider how different models of language use, which have been proposed in the philosophical literature, might be applied to communication in medicine. In particular, the authors contrast the traditional, indexical thesis of language with new models that focus on interpretation instead of standardization.

Results

The authors demonstrate how paying close attention to the role of language in medicine provides a philosophical foundation for supporting recent changes in doctor-patient communication. In particular, interpretive models are at the foundation of new approaches such as narrative medicine, that emphasize listening to patient stories, rather than merely collecting information.

Conclusion

Ultimately, debates regarding the role of language which have largely resided in non-medical literatures, have important implications for describing communication in medicine. In particular, interpretive models of language use provide an important rationale for facilitating a more robust dialogue between doctors and patients.

     

The sound of enemies and friends in the neighborhood

Previous studies (e.g., Pecher, Zeelenberg, & Wagenmakers, 2005) found that semantic classification performance is better for target words with orthographic neighbors that are mostly from the same semantic class (e.g., living) compared to target words with orthographic neighbors that are mostly from the opposite semantic class (e.g., nonliving). In the present study we investigated the contribution of phonology to orthographic neighborhood effects by comparing effects of phonologically congruent orthographic neighbors (book-hook) to phonologically incongruent orthographic neighbors (sand-wand). The prior presentation of a semantically congruent word produced larger effects on subsequent animacy decisions when the previously presented word was a phonologically congruent neighbor than when it was a phonologically incongruent neighbor. In a second experiment, performance differences between target words with versus without semantically congruent orthographic neighbors were larger if the orthographic neighbors were also phonologically congruent. These results support models of visual word recognition that assume an important role for phonology in cascaded access to meaning.     

Emotional maturity

According to the teachings of modern dynamic psychology, emotional maturity is characterized by ability to become interested in things and persons; to things for their own sake, to give love to other persons. In other words, capacity for altruism is one fundamental characteristic of emotional maturity. This fact supplies the biological foundation of Christian morality.     

Spatial navigation in complex and radial mazes in APP23 animals and neurotrophin signaling as a biological marker of early impairment

Impairment of hippocampal function precedes frontal and parietal cortex impairment in human Alzheimer's disease (AD). Neurotrophins are critical for behavioral performance and neuronal survival in AD. We used complex and radial mazes to assess spatial orientation and learning in wild-type and B6-Tg(ThylAPP)23Sdz (APP23) animals, a transgenic mouse model of AD. We also assessed brain content of nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), and neurotrophin-3 (NT-3). Performance was alike in wild-type and APP23 animals in the radial maze. In contrast, performance in the complex maze was better in wild-type than APP23 animals. Contrary to the wild-type, hippocampal BDNF levels decreased on training in APP23 animals. Hippocampal and frontal cortex NGF levels in APP23 animals correlated with the time to solve the complex maze, but correlated inversely with escape time in wild-type animals. NT-3 levels were alike in wild-type and APP23 animals and were unchanged even after training. Both types of mazes depend on hippocampal integrity to some extent. However, according to the cognitive mapping theory of spatial learning, the complex maze because of the increased complexity of the environment most likely depends more strongly on preserved hippocampal function than the radial maze in the working memory configuration applied here. Greater impairment in complex maze performance than in radial maze performance thus resembles the predominant affliction of the loss of hippocampal function in human AD. NGF and BDNF levels on maze learning are different in wild-type and transgenic animals, indicating that biological markers of AD may be altered on challenge even though equilibrium levels are alike.     

Technical intelligence in animals: the kea model

The ability to act on information flexibly is one of the cornerstones of intelligent behavior. As particularly informative example, tool-oriented behavior has been investigated to determine to which extent nonhuman animals understand means-end relations, object affordances, and have specific motor skills. Even planning with foresight, goal-directed problem solving and immediate causal inference have been a focus of research. However, these cognitive abilities may not be restricted to tool-using animals but may be found also in animals that show high levels of curiosity, object exploration and manipulation, and extractive foraging behavior. The kea, a New Zealand parrot, is a particularly good example. We here review findings from laboratory experiments and field observations of keas revealing surprising cognitive capacities in the physical domain. In an experiment with captive keas, the success rate of individuals that were allowed to observe a trained conspecific was significantly higher than that of naive control subjects due to their acquisition of some functional understanding of the task through observation. In a further experiment using the string-pulling task, a well-probed test for means-end comprehension, we found the keas finding an immediate solution that could not be improved upon in nine further trials. We interpreted their performance as insightful in the sense of being sensitive of the relevant functional properties of the task and thereby producing a new adaptive response without trial-and-error learning. Together, these findings contribute to the ongoing debate on the distribution of higher cognitive skills in the animal kingdom by showing high levels of sensorimotor intelligence in animals that do not use tools. In conclusion, we suggest that the 'Technical intelligence hypothesis' (Byrne, Machiavellian intelligence II: extensions and evaluations, pp 289-211, 1997), which has been proposed to explain the origin of the ape/monkey grade-shift in intelligence by a selection pressure upon an increased efficiency in foraging behavior, should be extended, that is, applied to some birds as well.