La productividad científica colombiana es limitada considerando indicadores como el número de artículos publicados en revistas de alto impacto y el índice h. La ausencia de una línea de base y de metodologías de comparación de productividad dificulta trazar las expectativas de publicación provenientes de las instancias nacionales. El objetivo del presente estudio es el de evaluar de manera comparativa aspectos relacionados con el impacto y la calidad de la productividad académica de los investigadores en neurociencia comportamental utilizando modelos animales en Colombia. Se encontró que aunque los investigadores en Colombia publican de manera significativa (0.9 artículos por año), están rezagados en todos los aspectos de productividad con relación a investigadores internacionales. Se espera que la metodología propuesta pueda extenderse a la evaluación del impacto y calidad de la productividad en temáticas específicas de otras áreas de investigación.
The progressive ratio (PR) schedule of reinforcement is widely used to assess reinforcement strength. Rats typically complete higher ratio requirements for more palatable food. This effect is well characterized by the Mathematical Principles of Reinforcement (MPR). In this experiment, either standard food pellets or amaranth grain were delivered according to PR schedules, with requirements increasing in steps of 1 (PR 1) or 3 (PR 3). Rats completed higher ratio requirements and displayed shorter pre-ratio pauses for pellets than for amaranth. Nevertheless, run-rates were similar across reinforcers. In terms of the theoretical parameters of MPR, similar values in a parameter (which indices incentive value) were obtained for amaranth and pellet reinforcers. This finding suggests that, although amaranth engenders less responding than pellets, amaranth grain is a reliable reinforcer for operant procedures. The MPR model accounted for the differences in quality of food.
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