Fig. 2.

Forgetting is competition-dependent. a The four phases used in Experiment 2. A new encoding phase (encoding 2) introduced two copies of a new object J after the practice phase. b The assumed retrieval dynamics during practice. Efforts to retrieve object A would trigger control processes to inhibit B, but not the new competitor memory J encoded post practice. c Discrimination index means ± SEM during test. Individual values used to calculate the mean and SEM are presented as dots. We found a significant interaction for condition × time of encoding, **p = 0.005 (t₂₂ = 3.68), d = 1.52 (RP vs. IC); and *p = 0.019 (t₂₂ = 3.14), d = 1.12 (RP vs. TC). Bonferroni post hoc comparisons after a repeated-measures ANOVA, n = 12 animals