A Multiple‐Channel Model of Task‐Dependent Ambiguity Resolution in Sentence Comprehension

Traxler, Pickering, and Clifton (1998) found that ambiguous sentences are read faster than their unambiguous counterparts. This so‐called ambiguity advantage has presented a major challenge to classical theories of human sentence comprehension (parsing) because its most prominent explanation, in the form of the unrestricted race model (URM), assumes that parsing is non‐deterministic. Recently, Swets, Desmet, Clifton, and Ferreira (2008) have challenged the URM. They argue that readers strategically underspecify the representation of ambiguous sentences to save time, unless disambiguation is required by task demands. When disambiguation is required, however, readers assign sentences full structure—and Swets et al. provide experimental evidence to this end. On the basis of their findings, they argue against the URM and in favor of a model of task‐dependent sentence comprehension. We show through simulations that the Swets et al. data do not constitute evidence for task‐dependent parsing because they can be explained by the URM. However, we provide decisive evidence from a German self‐paced reading study consistent with Swets et al.'s general claim about task‐dependent parsing. Specifically, we show that under certain conditions, ambiguous sentences can be read more slowly than their unambiguous counterparts, suggesting that the parser may create several parses, when required. Finally, we present the first quantitative model of task‐driven disambiguation that subsumes the URM, and we show that it can explain both Swets et al.'s results and our findings.     

Making history philosophical: Kant,Maimon, and the evolution of the historiography of philosophy in the critical period

ABSTRACT

In this article I explore Maimon’s role in the evolution of Kant’s understanding of the function of the history of philosophy in philosophical enquiry. Kant is often viewed as holding an ambivalent relation to the history of philosophy. On the one hand, he dismisses past philosophers as victims of transcendental illusion and downplays the value of the historiography of philosophy. On the other hand, by framing his project as a synthesis of several philosophical traditions, Kant embeds the critical philosophy into a sweeping historical narrative in a manner that highlights the importance of the past for present philosophical aims. In this article, I argue that for most of his career Kant held a position reflective of the former view, but that the publication of Maimon’s response to a prize question announced by the Royal Academy led Kant to develop an understanding of the history of philosophy more in line with the latter view. The result is a distinctively post-Kantian model for a ‘philosophical history of philosophy’ that is both methodologically nuanced and potentially relevant to contemporary debates.     

Test-dependent expression of behavioral syndromes: A study of aggressiveness,activity, and stress of chub

Aggressiveness has been one of the behavioral traits most examined with various standard testing methods. We used two distinct methods (the mirror and the real opponent tests) to evaluate individual aggression and relate it to the activity and individual stress of chub (Squalius cephalus L.). Three hypotheses were formulated and tested: (a) there is a significant positive relationship between the aggressiveness of individuals measured with the mirror and the real opponent tests, indicating their convergent validity; (b) the irregularities in response to the aggressiveness and activity tests lead to the context-specific expression of the behavioral syndromes; and (c) there is a significant positive relationship between the stress induced in individuals by both tests of aggressiveness, demonstrating individually consistent stress-coping strategies. The first and the second hypothesis were confirmed, while the third hypothesis was rejected. Our results suggest that particular tests of aggressiveness could act as a situation with high strength, leaving little variation between individual responses. Thus, we propose that for the proper interpretation of various studies using different tests to study identical behavioral traits, it is important to consider the convergent validity of not only the tested behavioral traits but also the individual stress responses. The chub also showed stress relieve through aggressiveness, suggesting the species as a prospective animal model to the study interaction between the stress and the aggressiveness. A detailed aggression ethogram of chub was provided to facilitate the use of this specie in future studies.