List context effects in reading Italian words and nonwords: Can the word frequency effect be eliminated?

It has been suggested that when words and non-words are presented mixed in the same blocks in transparent scripts the word frequency effect can be eliminated. This is either because in reading mixed blocks the lexical route is de-emphasised in favour of the nonlexical route (route de-emphasis) or because a homogenisation of reaction times occurs for words and non-words by adjustment of a time criterion for articulation (time criterion). In five experiments using different list manipulations and experimental designs, we assessed the effects of frequency and length in reading aloud words and non-words in the Italian transparent orthography. The effect of word frequency remained constant irrespective of context manipulation and non-word characteristics. As reading non-words may be easier in Italian than in English, control over reading processing may be unnecessary for Italian readers. The results are discussed with respect to current computational models of reading.