Demonstrating the differential effectiveness of instructional approaches for learners is difficult because learners differ on multiple dimensions. The present study tests a person-centered approach to investigating differential effectiveness, in this case of reading instruction. In N = 517 German third-grade students, latent profile analysis…

Although numerous studies have reported the predictive power of various factors for academic performance in regular students, little is known about the predictive power of students with Special Educational Needs (SEN). In the present study, we investigated the relative importance of thoroughly selected factors like prior performance, intelligence,…

Testing language abilities is common in the context of migration. It has been observed that approximately 6.2 million adults in Germany are low literate and that approximately 47% of this group does not have German as their L1. Similar findings have been reported for other modern Western societies with compulsory schooling and a well-developed…

Literacy influences all aspects of life. Unfortunately, a rising number of students struggle with reading and spelling, which can result in enormous educational barriers. Difficulties in literacy accompanied by learning-related problem behavior can create additional risk factors. Effective interventions for these students should consider…

Efficiency in reading component skills is crucial for reading comprehension, as efficient subprocesses do not extensively consume limited cognitive resources, making them available for comprehension processes. Cognitive efficiency is typically measured with speeded tests of relatively easy items. Observed responses and response times indicate the…