RT Conference Proceedings T1 Partial extinction and reinstatement A1 Quintero Felipe, María José A1 Molina, Patricia A1 Flores Martín, Amanda A1 López-Gutiérrez, Francisco José A1 Morís Fernández, Joaquín K1 Miedo AB Fear extinction is not permanent but more vulnerable than the original fear memory, as relapse phenomena have traditionally shown. Partial extinction has been proposed as a strategy that may serve to mitigate relapses. Partial extinction differs from the standard procedure as it includes the occasional presentation of CS-US trials at the beginning of the extinction training. The present experiment, using an aversive differential conditioning procedure, evaluates whether partial extinction can reduce reinstatement, a specific form of relapse. The results showed that partial extinction did not mitigate reinstatement but proved effective to diminish the magnitude of the US expectation after a first reacquisition trial in a final test phase. The results reported are more consistent with theories that conceives extinction as the acquisition of new inhibitory learning rather than the erasure of the original conditioning. YR 2018 FD 2018-09-25 LK https://hdl.handle.net/10630/16517 UL https://hdl.handle.net/10630/16517 LA eng NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 4 mar 2026