Mirror invariance in the subsequent acquisition of a script with separate forms for reading and writing

Purpose: Does suppression of mirror-invariance in one script generalize to a subsequently learned script? Method: We examined mirror invariance in writing and recognition among native Latin-scriptal children and adults (n = 181) learning the Hebrew print script (for reading), and among a subset (n = 92) also learning the Hebrew cursive script (for writing). Hebrew-Latin biscriptal Israeli adults (n = 17) provided comparison. Results: For the most part, mirror invariance was more evident in Hebrew print than in Latin in both writing and recognition among native Latin-scriptals. The number of previously acquired scripts had no effect. Letters’ text-frequency inversely affected written mirror-error frequency. Written reversal errors were less frequent in cursive; orientation recognition was more fluent in print. Conclusions: Mirror-invariance suppression in one's native script does not generalize to a subsequently acquired script. Factors affecting mirror-invariance suppression in the subsequent script include its form and function and individual letters’ text-frequency.