Figure 4.

Lexical-phonological properties for words retrieved in letter fluency for trained and untrained letters. In each panel the y axis represents, for the 8 letters of each set, the average value of the psycholinguistic variable examined, averaged across letters. The x axis represents the different assessment times, with “Pre-phase 2” also corresponding to three months after the end of phase 1. Panels A and B: log frequency, for trained and untrained letters, respectively. Panels C and D: Age of Acquisition, for trained and untrained letters, respectively.