STFP. (A) Wild-type (n = 15) and Syt IV mutant (n = 16) mice were tested for food preference 24 h after a single interaction with a demonstrator mouse that had just eaten cued food. Columns and error bars represent mean ± SEM, respectively. Planned comparisons reveal that wild-type mice exhibit a strong preference for cued food. [F (1, 14) = 13.7; P < 0.01]. In contrast, Syt IV mutant mice did not demonstrate a statistically different preference for cued food [F (1, 15) = 1.5; P > 0.2]. (B) Wild-type (n = 9) and Syt IV mutant (n = 10) mice were tested for food preference immediately after a single interaction with a demonstrator mouse that had just eaten cued food. Wild-type and Syt IV mutant mice both exhibit a strong preference for cued food. Wild-type [F (1, 8) = 5.8; P < 0.05]; Syt IV mutant mice [F (1, 9) = 12.8; P < 0.01].