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Copyright of Acta Colombiana de Psicologia is the property of Universidad Catolica de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Mexican Journal of Behavioral Analysis / Revista Mexicana de Análisis de la Conducta is the property of Sociedad Mexicana de Analisis de la Conducta and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The interaction between conceptual complexity and different types of directed verbalization on conceptual attainment and abstraction was studied. Two types of concepts were manipulated: unidimensional and conditional, and three types of directed verbalization in each trial: description of contingencies, exemplar construction and criterion formulation, with a control condition of verbal interference. The ultimate goal was to examine the role of linguistic mediation in adjustment to relations systems that includes the abstraction of system itself. 48 undergraduate students participated, and it was used a receptive classification task with three problems of the same concept, which included choice and verbalization trials, and a final task of abstraction of each of these three concepts and of the generic concept the integrated them. The results indicate that the unidimensional concept was attained even without directed verbalization while only one participant attained the conditional one. Only when the unidimensional concept was attained consistently in all three problems at optimal levels, it was found dependence upon correct verbalization and, therefore, linguistic mediation. The latter was clearly established in the criterion formulation condition and in turn, was associated with the possibility of abstract each criterion explicitly but without the generic abstraction necessarily. The findings are discussed in terms of the process leading to the criterion identification and abstraction, focusing it as a progressive adjustment in which the linguistic dominance is established. [ABSTRACT FROM AUTHOR]

Copyright of Acta Comportamentalia is the property of Instituto de Psicologia y Educacion de la Universidad Veracruzana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Comportamentalia is the property of Instituto de Psicologia y Educacion de la Universidad Veracruzana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Comportamentalia is the property of Instituto de Psicologia y Educacion de la Universidad Veracruzana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Comportamentalia is the property of Instituto de Psicologia y Educacion de la Universidad Veracruzana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The continuity assumption in the operant tradition, that is, to consider the behavior of all species in terms of the same processes, has induced a confusion of categories that prevents the study and understanding of proper human behavior. Continuity arguments are reviewed, especially those based on scientific simplicity and phylogenetic continuity. Three counterarguments are developed, showing how the possibility of different behavioral processes among species, including the human one, is defensible, without denying that the origins of different species and of the behavior of organisms respond to the same principles. In the end, a proposal is outlined about the possibility of identifying different behavioral processes, as an analysis of behavioral organization, which would allow a more fruitful study of properly human behavior from a behavioral perspective. [ABSTRACT FROM AUTHOR]

Copyright of Acta Comportamentalia is the property of Instituto de Psicologia y Educacion de la Universidad Veracruzana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Se presenta una introducción a la revista, en la cual se discurre sobre la historia de los experimentos psicológicos, los aspectos éticos de la experimentación en los animales y el estudio del comportamiento humano.