The effect of morphological priming was operationalized as the difference between the reaction time for words preceded by morphological primes and the reaction time for words preceded by orthographic primes or non-related primes, divided by the standard deviation of overall reaction time.
The words preceded by morphological primes were recognized 119 ms faster than those preceded by non-related primes.
Nevertheless, in studies where the SOA was longer, words preceded by morphological primes were recognized faster than words preceded by a pseudo-derived prime.
The results indicate that the difference between non-related prime and morphological prime was significant when the SOA was 250 ms: t 31) = 2.62, p = 0.01.
The words preceded by morphological primes were recognized 86 ms faster than those preceded by non-related primes, and were recognized 109 ms faster than those preceded by orthographic primes.
In this school grade, when compared to words preceded by orthographic primes or by non-related primes, words preceded by morphological primes were recognized faster in the 250-ms SOA and in the 60-ms SOA.
When compared to words preceded by non-related primes, words preceded by morphological primes were recognized 76 ms faster in the 250-ms SOA [t 37) = 2.67, p = 0.01] and 62 ms faster in the 60-ms SOA (p = 0.059 being just significant).
When compared to words preceded by orthographic primes, words preceded by morphological primes were recognized 86 ms faster in the 250-ms SOA and 76 ms faster in the 60-ms SOA [t 37) = 3.69, p < 0.01 and t 37) = 2.42 p = 0.02, respectively].
The behavioral data showed significant effects of morphological and semantic priming, with the magnitude of morphological priming being significantly larger than the magnitude of semantic priming.
However, it is possible to argue that in this school grade, the morphological priming effect is very small, once it does not differ from the orthographic prime.
