Performance of various patient groups with hippocampal damage in the acquired equivalence task. (a–d) Patients with hippocampal atrophy, hypoxia, or schizophrenia, were impaired at transfer generalization performance, particularly during the performance of transfer trials (Keri, Juhasz et al., 2005; Myers et al., 2008; Myers et al., 2003). (e) Simulated hippocampal damage. Simulation results are quantitatively similar to all other groups with hippocampal damage.