The emergence of a new paradigm in ape language research

In recent years we have seen a dramatic shift, in several different areas of communication studies, from an information-theoretic to a dynamic systems paradigm. In an information processing system, communication, whether between cells, mammals, apes, or humans, is said to occur when one organism encodes information into a signal that is transmitted to another organism that decodes the signal. In a dynamic system, all of the elements are continuously interacting with and changing in respect to one another, and an aggregate pattern emerges from this mutual co-action. Whereas the information-processing paradigm looks at communication as a linear, binary sequence of events, the dynamic systems paradigm looks at the relation between behaviors and how the whole configuration changes over time. One of the most dramatic examples of the significance of shifting from an information processing to a dynamic systems paradigm can be found in the debate over the interpretation of recent advances in ape language research (ALR). To some extent, many of the early ALR studies reinforced the stereotype that animal communication is functional and stimulus bound, precisely because they were based on an information-processing paradigm that promoted a static model of communicative development. But Savage-Rumbaugh's recent results with bonobos has introduced an entirely new dimension into this debate. Shifting the terms of the discussion from an information-processing to a dynamic systems paradigm not only highlights the striking differences between Savage-Rumbaugh's research and earlier ALR studies, but further, it sheds illuminating light on the factors that underpin the development of communication skills in great apes and humans, and the relationship between communicative development and the development of language.     

Inter-group alliance dynamics in Indo-Pacific bottlenose dolphins (Tursiops aduncus)

Animal Cognition - The social intelligence hypothesis holds that complex social relationships are the major selective force underlying the evolution of large brain size and intelligence. Complex...     

The Relationship Between the Repression-Sensitization Scale and the Incomplete Sentences Blank

Prior research with the Repression-Sensitization (R-S(scale has isolated certain differential behavior patterns in Ss scoring at the extremes of the scale. Thus Byrne's formulation of the R-S scale hypothesized a curvilinear relationship between the R-S scale and psychological adjustment. However, other research suggests that the relationship may be linear. Using Rotter's Incomplete Sentence Blank, College Form (ISB), it was hypothesized that there would be a linear relationship between the R-S scale and ISB. 204 college students took both the R-S and ISB. No significant sex differences were obtained. While the correlation between the R-S scale and ISB was significant (r = 59, p < .01), the results did not prove linearity, but there is insufficient evidence to support any other kind of relationship.     

Test-Taking Behaviors by Hypertensive and Normotensive Individuals

Systematic ratings were made on the Tulane Test-Behavior Scale of the global and integrated behaviors observable for hypertensive and normotensive subjects as they worked to complete a battery of neuropsychological tests—the degree of attention and effort displayed, for example, self-confidence and self-criticism. The results for 82 subjects (41 subject pairs matched for age, race, and education) revealed substantial and consistent differences between groups. Early, mild hypertensive subjects (unmedicated) displayed significantly less optimal behaviors than did normotensive controls. These may be best understood as subtle functional consequences of the abnormal physiological state imposed on the brain by a chronically elevated blood pressure, just as the functional disruptions of reduced kidney filtration fraction or minor abnormalities of the electrocardiogram appear early in the course of the disorder for other target organs. Certain testable implications of this hypothesis are discussed.