Oddly Wired
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memory

Your brain processes familiar words faster than uncommon ones.

The word-frequency effect shows that you recognize high-frequency words significantly faster than words you encounter rarely.

Lexical decision tasks demonstrate that this happens even when visual clarity is identical. Your brain optimizes its processing speed for the vocabulary you use daily, creating a subtle bias in how you read and interpret text. This efficiency occurs below the level of conscious awareness.

Your familiarity dictates how easily you process information.

Where this comes from

Study
Howes and Solomon, 1951
What the check found
The word-frequency effect is a well-established psycholinguistic phenomenon. Howes and Solomon (1951) provided early foundational evidence for it, despite using a different measurement technique than modern studies.
Confidence
Solid, with limits

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.