@article{Nieto_Boakes_2011, title={Approach and Withdrawal Behavior in Pavlovian Aversive Conditioning in the PigeonI}, volume={1}, url={https://revistas.unam.mx/index.php/rmac/article/view/26911}, DOI={10.5514/rmac.v1.i1.26911}, abstractNote={Groups of pigeons were exposed to several types of correlations between keylightand shocks, the pigeons’ behavior was measured as approach or withdrawal from thekeylight. Experiment 1 showed that a signalled avoidance task is learned faster whenthe instrumental response is to withdraw from the signal than when it is to approach thesignal. Experiment 2 showed withdrawal behavior from the keylight in a purely Pavlovianprocedure, but faíled to show the approach towards a Pavlovian inhibitor. Experiment 3showed approach to a keylight between-sessions negatively correlated with shocks,whereas such a behavior was not observed in control groups. Thus, both Pavlovian excitersand inhibitors can elicit behavior which reflect the hedonic consequences of the presentationand omission of a reinforcer.}, number={1}, journal={Mexican Journal of Behavior Analysis}, author={Nieto, Javier and Boakes, Robert A.}, year={2011}, month={Aug.}, pages={173–194} }