| Abstract | Morphological facilitation was examined in immediate (Experiment 1) and long-term (Experiment 2) lexical decision with English materials. For the target (payment), related primes consisted of base-alone (pay), affix-plus-base (prepay), or base-plus-affix (payable) combinations, thereby defining position of overlap. In addition, modality of presentation varied for primes and targets (Experiment 1). At short lags, the advantage for prepay-payment over payable-payment type pairs was significant when primes were visual (V) and target were auditory (A), marginal under AV conditions, and nonexistent under VV conditions. At long lags, the magnitude of VV did not vary with position of overlap. Morphological facilitation was stable across changes in modality following suffixed primes presented cross-modality implicates modality-specific processing. |