Figure 5.

Fraction of Go-responses toward the regular strings (shaded diamonds) and irregular strings (open diamonds) with one y-element more (4 y-elements, pair 3a) or less (2 y-elements, pair 3b) compared to the training strings, creating a 25% increase or decrease of the IXI. Black lines shown the average fraction of Go responses of the six zebra finches. Asterisks indicate a significant difference between the responses to the Go and to the No-go strings. Individual budgerigar results are shown with shaded circles (regular strings) and open circles (irregular strings).