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We examined the double-deficit hypothesis in Finnish. One hundred five Finnish children with high familial risk for dyslexia and 90 children with low family risk were followed from the age of 3½ years until Grade 3. Children's phonological awareness, rapid naming speed, text reading, and spelling were assessed. A deficit in rapid automatized naming (RAN) predicted slow reading speed across time and spelling difficulties after Grade 1. A deficit in phonological awareness predicted difficulties in spelling, but only in the familial risk sample. The effect of familial risk was significant in the development of phonological awareness, RAN, reading, and spelling. Our findings suggest that the basic premise of the double-deficit hypothesis—that RAN and phonological awareness are separable deficits with different effects on reading and spelling outcomes—holds also in a consistent orthography. [ABSTRACT FROM AUTHOR]

In this study, 91 Finnish-speaking preschoolers (ranging in age from 6.4 to 7.4 years) were tested by using 2 structural equation models. None of the participants had entered school at the time of the study because the age of school entry in Finland is 7 years. The structural equation models were built particularly to examine the connections between children's reading abilities and their phonological skills. The main results of this study show that, in a very transparent language such as Finnish, the model that emphasized sensitivity to the phonological structure of the word as the prerequisite for learning to read fit our data well. The other model, which was likewise theoretically and statistically quite accessible, implied, by contrast, the reciprocity between learning to read and the emergence of phonemic awareness. The results of this study suggest that skills related to reading at preschool age are in many respects the same and have the same relations in a transparent language such as Finnish as they do in English. However, there also seem to be differences, especially in the relations between phonemic awareness skills and reading that may be language specific and require further investigation. [ABSTRACT FROM AUTHOR]