Effective vocabulary development promotes which outcomes?

• A. Reading speed only
• B. Decoding ability
• C. Comprehension and overall reading success
• D. Spelling accuracy

Answer: (C)

Building a strong vocabulary directly supports understanding the meaning of what you read, which leads to comprehension and overall reading success. When you know many words, you can quickly grasp sentence meaning, follow ideas across paragraphs, and use context to infer information. This makes reading feel more fluent and helps you remember and apply what you’ve read.

Decoding is about letter-sound relationships, so vocabulary doesn’t change how you sound out words, even though knowing word meanings can help you recognize familiar words more quickly. Reading speed can improve as understanding grows, but the key payoff of vocabulary work is deeper comprehension, not just rate. Spelling can be aided by word knowledge as you learn correct forms, but the main impact of vocabulary development is on meaning and overall reading achievement.