An information-theory approach to geometry for animal groups

Animal Cognition - One of the hardest problems in studying animal behaviour is to quantify patterns of social interaction at the group level. Recent technological developments in global positioning...     

The universal SNARC effect: the association between number magnitude and space is amodal

It is thought that number magnitude is represented in an abstract and amodal way on a left-to-right oriented mental number line. Major evidence for this idea has been provided by the SNARC effect (Dehaene, Bossini, & Giraux, 1993): responses to relatively larger numbers are faster for the right hand, those to smaller numbers for the left hand, even when number magnitude is irrelevant. The SNARC effect has been used to index automatic access to a central semantic and amodal magnitude representation. However, this assumption of modality independence has never been tested and it remains uncertain if the SNARC effect exists in other modalities in a similar way as in the visual modality. We have examined this question by systematically varying modality/notation (auditory number word, visual Arabic numeral, visual number word, visual dice pattern) in a within-participant design. The SNARC effect was found consistently for all modality/notation conditions, including auditory presentation. The size of the SNARC effect in the auditory condition did not differ from the SNARC effect in any visual condition. We conclude that the SNARC effect is indeed a general index of a central semantic and amodal number magnitude representation.     

Eine Kritik der poiëtischen Vernunft. Anmerkungen zur Wissenschaftstheorie vom technischen Gestalten

A Criticism of Poiëtical Reason. Remarks on Epistemological Philosophy of Technological Shaping. According to Aristoteles human reason can be divided into three independent properties: ?εωρια,πραξισ, and πoιησισ. The latter is required for the technological construction of actuality. Scrutinizing to the conception of μιμησισ it can be figured out that technological acting intends a representation of truth, not an imitation of nature. The concept of nature developed by sciences of modern times is discussed in its lawful disposition. To give some features of an epistemological philosophy of technological shaping first the difference between technological rules and laws of nature is examined. Second, three attributes of technological sciences in distinction to natural sciences are described. Finally, some shaping rules used by engineering sciences are presented. These rules need an epistemological investigation put through other wise than the philosophy of science.     

Information repetition in evaluative judgments: Easy to monitor,hard to control

The sampling approach [Fiedler, K. (2000a). Beware of samples! A cognitive-ecological sampling approach to judgment biases. Psychological Review, 107(4), 659–676.] attributes judgment biases to the information given in a sample. Because people usually do not monitor the constraints of samples and do not control their judgments accordingly, systematic judgment biases occur. Three experiments demonstrate this for an obvious sampling constraint, the emptiness of merely repeated information. When evaluating stock market shares, participants did not correct for the repetition of positive or negative information about a share. Although original and repeated information was reliably distinguished in estimates of occurrence (successful monitoring), preferences were misled by mere repetition of success and failure reports (unsuccessful control). This effect could even override a share’s actual success rate. Explicit instructions to ignore repetitions provided no remedy; however, a cognitive load manipulation reduced repetition’s undue influence. Possible reasons for and benefits of this lack of direct metacognitive control are discussed.     

Suchttherapie bei abhängigen Ärzten

Background

International studies indicate an increased incidence of substance abuse disorders among physicians. This article investigates specific variables in the work field and describes existing treatment programs.

Patients and methods

In a cross-sectional study 107 physicians with and 468 without substance abuse disorders were compared. Two highly developed treatment programs in Germany and Canada are described.

Results

The high work-load associated with the medical work environment leads to reduced performance and social isolation. Treatment programs for addicted physicians work with the concept of ?help before restriction“. The abstinence rate of the 5-year Canadian program is over 90%.

Conclusions

As a form of prevention, medical students should be systematically informed about work-related stress in the medical profession. Structured treatment programs should be implemented nationwide. The expert team ?Risk of addiction in physicians“ of the German Addiction Foundation, whose members are authors of this article, may be a small step in this direction.     

Construal Level Theory as an Integrative Framework for Behavioral Decision‐Making Research and Consumer Psychology

In this comment to Trope, Liberman and Makslak's lead article, I refrain from any attempt to review or recapitulate the growing body of research in social psychology in general and in consumer science in particular that is explicitly devoted to construal level theory (CLT). Rather, granting the status of CLT as a leading contemporary theory, with rich implications and applications in consumer science, I concentrate on recent phenomena in judgment and decision making for which CLT provides an implicit account. Specifically, CLT affords an integrative framework for understanding a whole variety of preference reversals—a major challenge for students of consumer behavior.     

Two meanings of "if"? Individual differences in the interpretation of conditionals

This work investigates the nature of two distinct response patterns in a probabilistic truth table evaluation task, in which people estimate the probability of a conditional on the basis of frequencies of the truth table cases. The conditional-probability pattern reflects an interpretation of conditionals as expressing a conditional probability. The conjunctive pattern suggests that some people treat conditionals as conjunctions, in line with a prediction of the mental-model theory. Experiments 1 and 2 rule out two alternative explanations of the conjunctive pattern. It does not arise from people believing that at least one case matching the conjunction of antecedent and consequent must exist for a conditional to be true, and it does not arise from people adding the converse to the given conditional. Experiment 3 establishes that people's response patterns in the probabilistic truth table task are very consistent across different conditionals, and that the two response patterns generalize to conditionals with negated antecedents and consequents. Individual differences in rating the probability of a conditional were loosely correlated with corresponding response patterns in a classical truth table evaluation task, but there was little association with people's evaluation of deductive inferences from conditionals as premises. A theoretical framework is proposed that integrates elements from the conditional-probability view with the theory of mental models.     

A suicide epidemic in a psychiatric hospital.

The authors report in detail on an epidemic of six inpatient suicides in a psychiatric hospital in Finland. Suggestion and identification had an effect on the timing as well as on the method of four of the suicides. The epidemic is viewed from individual, network, and organizational perspectives. The authors speculate on how such epidemics could be avoided. An increase in inpatient suicide rates has been reported from many countries, and the Werther effect may thus become a topic of considerable importance in psychiatric hospitals in the future.