<![CDATA[Purpose of the study: This study aims to examine the relationship between language processing speed and academic achievement across multiple domains in elementary school students. It also investigates the differential predictive values of simple versus complex processing speed components and developmental patterns across grade levels. Materials and methods: A quantitative cross-sectional design was employed involving 485 elementary students from grades 1 to 5, aged 6.2 to 11.8 years. Participants underwent assessments of simple and complex processing speed, language processing speed (e.g., Rapid Automatized Naming), and academic achievement using standardized tests in reading, mathematics, and language arts. Data were analyzed using correlation, hierarchical regression, and structural equation modeling to determine the predictive contributions of processing speed components to academic outcomes. Results: Findings indicated significant moderate to strong positive correlations (r = .34 to .67) between language processing speed and academic performance. Complex processing speed was more strongly associated with higher-order academic skills such as reading comprehension and mathematical problem-solving, while simple processing speed related more to basic academic skills. Reading fluency emerged as the strongest predictor of academic achievement, with specific processing speed measures explaining additional variance beyond age, grade, and general cognitive ability. Conclusions: Language processing speed is a critical predictor of academic achievement in elementary students, with complex processing speed playing a pivotal role in higher-order cognitive tasks. Early identification and intervention focusing on processing speed components can enhance learning outcomes. Future longitudinal research is warranted to explore causal pathways and effective interventions for students with processing speed deficits.]]>
