The Simple View of Reading

The Simple View of Reading (SVR) is a widely accepted formula (Decoding (D) x Language Comprehension (LC) = Reading Comprehension (RC)) that posits reading comprehension relies on two basic components: word recognition (decoding) and language comprehension. This formula is supported by research and helps educators assess reading weaknesses and provide effective instruction. It highlights that strong reading comprehension requires both strong decoding skills and robust language comprehension abilities, and that interventions must target specific weaknesses in D or LC.

Decoding (D) is defined as efficient word recognition and encompasses fast, accurate reading of familiar and unfamiliar words. Language Comprehension (LC) refers to the ability to derive meaning from spoken words and includes receptive vocabulary, grammatical understanding, and discourse comprehension. Reading Comprehension (RC) is language comprehension derived from print. Decoding is considered a teachable skill with a narrow scope of knowledge, whereas comprehension is a complex, knowledge-based process involving higher-level mental functions, rather than a single skill.

Research supporting the SVR yields four critical findings. First, reading comprehension is composed of two distinct categories: decoding and language comprehension. Second, reading difficulties fall into three types: poor at language comprehension (strong decoding, weak LC), poor at decoding (strong LC, weak decoding), or weaknesses in both areas. Third, both D and LC must be strong for strong RC. If one is weak, it limits RC. Fourth, RC scores are not an average of D and LC; if one component is strong, RC equals the weaker component. If both are less than strong, RC will be lower than either, due to the multiplier effect.

The SVR is an algebraic equation, meaning if two of the three variables (RC, D, LC) are known, the third can be estimated. This reduces assessment time. Analyzing student responses to intervention demonstrates the SVR's utility. A student with strong decoding but weak language comprehension (Student A) greatly benefited from comprehension-focused intervention. A student with strong language comprehension but weak decoding (Student B) saw minimal improvement from the same intervention, highlighting the need to address decoding. A student with weaknesses in both (Student C) showed moderate improvement in LC but still needs decoding intervention. This underscores that interventions must be tailored to the specific weakness (D, LC, or both) for optimal results, as teaching to a strength will not significantly improve comprehension.

Multiple studies, including Hoover and Gough (1990) and Catts, Adlof, & Weismer (2006), validate the SVR. Hoover and Gough found high correlations between actual RC scores and those predicted by D x LC. Catts et al. demonstrated that the SVR effectively classifies poor readers, showing that poor comprehenders have general language deficits, while poor decoders have phonological processing difficulties. In conclusion, the Simple View of Reading provides clear guidance for assessing students with low reading comprehension scores, stressing the need for data on both decoding skills and language comprehension abilities to determine effective interventions. It also emphasizes the importance of early decoding instruction and fostering strong content knowledge and higher-order thinking skills.