Screening for Risk of Dyslexia, Developmental Language Disorder, and Other Reading Difficulties
What this domain tests
This domain covers universal screening and risk indicators for dyslexia, developmental language disorder (DLD), and other reading difficulties. MAP-style items ask you to interpret screening data, distinguish profiles, and choose next steps. Screening flags risk; it does not diagnose.
Core rules and concepts
- Dyslexia risk indicators: weak phonological awareness, poor letter-sound knowledge, slow rapid automatized naming (RAN), inaccurate or labored word reading, and poor spelling-despite adequate instruction.
- DLD risk indicators: receptive and expressive vocabulary delays, syntax errors, difficulty following directions, and weak narrative language; these can affect reading comprehension even when decoding is intact.
- Other reading difficulties include comprehension-specific weaknesses (inference, background knowledge) and fluency-only weaknesses.
- Screening tools report cut scores, sensitivity (true positives), and specificity (true negatives); no single screener is definitive.
- English learners need language-development comparison data before a disability designation.
Worked example
A first grader scores below the cut on phoneme blending and letter-sound fluency, and is very slow on a RAN task, but has age-typical oral vocabulary and syntax. Reasoning: the profile points to dyslexia risk, because phonological and naming-speed weaknesses are core, while language comprehension is intact. The team should provide explicit phonics intervention and monitor progress. If the same student had weak vocabulary, syntax, and narrative retell, DLD risk would need consideration first.
Traps that cost marks
- Treating a single low screener score as a diagnosis.
- Confusing dyslexia (word-level decoding and spelling) with DLD (language comprehension and production).
- Overlooking RAN and spelling when only accuracy is checked.
- Failing to rule out lack of instruction or second-language acquisition.