In this study we analyze the meaning of symbols based on the psychological approach of Piaget. In addition, we would like to stimulate more research in this area. A symbol has sense when it has a nexus with a specific…

Prehistoric rock paintings from Northern Mexico are becoming better known. Twenty sites for a single municipio in the state of Nuevo Leon have recently been described. Not all the paintings that are being found are a spectacular as the ones…

The present paper argues for the systematization of the established knowledge on eating behavior in Conditioning and in Motivation on the basis of the quantitative contiguities between some of its controlling variables. A variable in common to both types of…

This article discusses centers of origin  and genetic divesification of domesticated plants in Mexico, in the context of the introduction of transgenic hybrids to Mexico. The teritories of present day indigenous groups are associated with strains of corn. Mexico needs…

El análisis paleoepidemiológico y paleodemográfico en las poblaciones mayas ha sido un tema que se ha tratado en forma separada por diversos investigadores, llegando a interpretaciones sesgadas por la escasa conjunción de estas áreas complementarias que abordan los estudios antropofísicos. Más aún, la…

Health studies in ancient populations is a very complex field. Many years passed by before anthropologists showed concern to know about health in ancient populations, and paleopathological studies of skeletal remains shifted from the traditional clinic orientation of individual cases to population and…

Dopamine is a neurotransmitter strongly involved in the feeding behavior regulation. It has been reported that different dopamine receptor agonists inhibited voluntary food intake, nevertheless, dopamine depletion induced intense hypophagia. Current knowledge of D2 receptors and D3 mRNA expression in…

The state of psychology as a knowledge discipline is examined. Some reflections are made about the application of psychological knowledge, taking into account: a) the nature of knowledge being applied, b) the translation of analytic knowledge typical of basic science,…

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Se destaca la importancia que tuvo la obra de Skinner en la aplicación del conocimiento psicológico a una diversidad de problemas como los de Ia educación, la salud y otros más, It is emphazised the importance of Skinner's works in…