The study examined: (a) the role of phonological, grammatical, and rapid automatized naming (RAN) skills in reading and spelling development; and (b) the component processes of early narrative writing skills. Fifty-seven Turkish-speaking children were followed from Grade 1 to Grade 2. RAN was the most powerful longitudinal predictor of reading speed and its effect was evident even when previous reading skills were taken into account. Broadly, the phonological and grammatical skills made reliable contributions to spelling performance but their effects were completely mediated by previous spelling skills. Different aspects of the narrative writing skills were related to different processing skills. While handwriting speed predicted writing fluency, spelling accuracy predicted spelling error rate. Vocabulary and working memory were the only reliable longitudinal predictors of the quality of composition content. The overall model, however, failed to explain any reliable variance in the structural quality of the compositions. Likewise, our current understanding of the component processes of early narrative writing skills in consistent orthographies is very limited. Three central processing skills have been identified to underlie the early composition writing skills of children. These are the transcription (e.g., handwriting and spelling), verbal memory (e.g., short term memory and working memory), and text generation (e.g., oral language skills such as grammar and vocabulary) (Berninger, 1999;McCutchen, 2000). However, as the research evidence almost 4 exclusively comes from studies conducted in English, we do not know the relative importance of these processing skills in consistent writing systems.The present study seeks to address these issues and has two primary aims. First, to investigate the relative role of grammatical awareness, phonological awareness, and RAN in reading and spelling; second, to investigate the role of the three central component processes