Biologists studying short-lived organisms have become aware of the need to recognize an explicit temporal extend of a population over a considerable time. In this article we outline the concept and the realm of populations with explicit spatial and temporary boundaries. We call such populations “temporally bounded populations”. In the concept, time is of the same importance as space in terms of a dimension to which a population is restricted. Two parameters not available for populations that are only spatially defined (...) characterise temporally bounded populations: total population size, which is the total number of individuals present within the temporal borders, and total residence time, which is the sum of the residence times of all individuals. We briefly review methods to estimate these parameters. We illustrate the concept for the large blue butterfly (Maculinea nausithous) and outline insights into ecological and conservation-relevant processes that cannot be gained without the use of the concept. (shrink)

Based on an ad hoc online survey about risk perception and preventive behaviours, we describe three chronological phases related to how people in Germany perceived the Corona pandemic between March 22 and May 10, 2020. In general, participants reported to be less concerned about their own risk than about the risk faced by others. However, a good portion of those who thought that they themselves were low risk actually wrote about their belief that they nevertheless had a responsibility to behave (...) in ways that benefited others, even if it came at a cost to themselves. In loose reference to Immanuel Kant’s notion that humans have a rational duty to act in a socially responsible manner, we interpret people’s comments about other-regarding behaviour as an initiation of a Kantian tendency during the Corona pandemic. Based on these findings, we suggest that policy makers may do better in times of crisis than nudging, incentivizing, or compelling the public by law. They can perhaps accomplish more by nurturing people’s innate sense of the need for socially responsible action to be taken in order to meet the daunting challenges of present and future crises. (shrink)

Biographical note: Jochen Golz, Goethe-Gesellschaft; Manfred Koltes, Goethe- und Schiller-Archiv an der Klassik Stiftung Weimar.

The current situation around COVID-19 portrays a threat to us in several ways: It imposes uncertainty, a lack of control and reminds us of our own mortality. People around the world have reacted to these threats in seemingly unrelated ways: From stockpiling yeast and toilet paper to favoring nationalist ideas or endorsing conspiratorial beliefs. According to the General Process Model of Threat and Defense the confrontation with a threat - a discrepant experience - makes humans react with both proximal and (...) distal threat responses. While the proximal response manifests in behavioral inhibition that leads to heightened anxious arousal and vigilance, distal responses seek to lower behavioral inhibition and the associated state of anxiety and vigilance through engaging in distal defenses. In the present research, we propose that the reactions to COVID-19 may represent distal defense strategies to the pandemic (in the form of environmental or group related worldview defenses) and therefore can be explained and forecasted by the model. Thus we hypothesized increased perceived COVID-19 threat perception to lead to a proximal threat response in the form of heightened behavioral inhibition. This, in return, should enhance the use of distal defenses (i.e.: several ingroup biases, system justification and conspiratorial beliefs) overlapping with the reactions observed as a response to COVID-19. This hypothesized mediated effect of increased perceived COVID-19 threat on distal defenses was tested in two pre-registered studies: In Study 1 (N = 358) results showed perceived COVID-19 threat to be related to behavioral inhibition and in turn to be associated with increased distal defenses (i.e., higher entitativity, control restoration motivation, passive party support). In Study 2 (N = 348) we manipulated COVID-19 threat salience and found results suggesting the distal defenses of system justification and conspiratorial beliefs to be mediated by the proximal threat response. The results of the present research hint towards a common mechanism through which the seemingly unrelated reactions to COVID-19 can be explained. The results might help to predict future behavior during the COVID-19 pandemic and design measures to counteract detrimental effects of the pandemic. (shrink)

The biological sciences have become increasingly reliant on so-called ‘model organisms’. I argue that in this domain, the concept of a descriptive model is essential for understanding scientific practice. Using a case study, I show how such a model was formulated in a preexplanatory context for subsequent use as a prototype from which explanations ultimately may be generated both within the immediate domain of the original model and in additional, related domains. To develop this concept of a descriptive model, I (...) focus on use of the nematode worm Caenorhabditis elegans and the wiring diagrams that were developed as models of its neural structure. In addition, implications of the concept of a descriptive model, particularly its relevance for the data-phenomena distinction as well as its relation to long-standing debates on realism, are briefly examined. (shrink)

What can the manifestations of schizophrenia and other mental disorders reveal about classical notions of philosophy such as thought, perception, self, and rationality? Philosophers, psychiatrists, and clinical psychologists got together to compare notes at Harvard in October 1989, and presented these 16 papers. Annotation copyrighted by Book News, Inc., Portland, OR.

Biology lacks a central organism concept that unambiguously marks the distinction between organism and non-organism because the most important questions about organisms do not depend on this concept. I argue that the two main ways to discover useful biological generalizations about multicellular organization—the study of homology within multicellular lineages and of convergent evolution across lineages in which multicellularity has been independently established—do not require what would have to be a stipulative sharpening of an organism concept.