Sesgo De Respuesta Y Consecuencias Diferenciales “Biológicamente Neutras” en Discriminación Condicional Con Ratas

Abstract

The present experiment explored the differential outcomes effect using "biologically neutral outcomes". Two groups of rats were exposed to a two-choice conditional discrimination procedure. Responses to one of two available levers in the presence of one visual stimulus and responses to the other lever in the presence of a second visual stimulus were reinforced with food pellets. For one group, an auditory stimulus was consistently correlated with reinforcer delivery for responses in one lever but not the other. For the other group, the auditory stimulus was or wasn't presented with reinforcement after either correct response, randomly. Global percentage of correct responses was similar between groups, but rats exposed to the correlated condition showed a bias for the lever that produced food only. Along with previous experiments, the present results question the differential outcomes effect using either biologically neutral or biologically non-neutral outcomes.