Early Literacy 321 Practice Test 2026 – All-in-One Guide for Exam Success!

Executive function includes skills like working memory, attention control, and cognitive flexibility that help you decode and comprehend text, stay focused, and monitor understanding as you read. Because these abilities vary among individuals, they can help explain why some readers perform at higher levels than others. When someone struggles with EF, distractions, keeping track of multiple steps in a task, or holding decoded units in memory can interfere with fluency and comprehension, which is why differences in EF often correspond to differences in reading performance. This makes the statement about EF difficulties potentially distinguishing good readers from poor readers the most accurate depiction. It’s not that EF is the only factor—reading also depends on vocabulary, phonological skills, background knowledge, and instruction—but the link between EF and reading performance is real and meaningful.