Velazquez Martínez, D.N., Bermúdez Rattoni, F. and Prado Alcalá, R.A. 2011. Effects of halo pendol oit Me perforrmance of a response conditíoned under a fixed-interval schedule. Mexican Journal of Behavior Analysis. 7, 2 (Jun. 2011), 159–164. DOI:https://doi.org/10.5514/rmac.v7.i2.25741.