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Language comprehension percentile (preschool language scale-3) for matched groups [family history positive (HX+) and family history negative (HX−)] at 24 months, as a function of D prime (difference between hit and false alarm rates) at 6 months, in a psychophysical task assessing discrimination of two 75-ms duration complex tones separated by an interstimulus-interval of 70 ms. Poor discrimination is represented by D primes below 0.9. Figure used with permission from A. A. Benasich.†
