Two words appear side by side. Pick the one that appears more frequently in everyday English. Tests lexical access speed, implicit vocabulary knowledge, and the mental lexicon's sensitivity to word frequency.
Very Easy
10 trials — very common vs. rare words, unlimited time.
Easy
12 trials — very common vs. rare words — 8 seconds each.
Medium
15 trials — common vs. moderately frequent words — 6 seconds.
Hard
18 trials — all difficulty tiers — 4 seconds each.
Expert
22 trials weighted toward close-frequency pairs — 3 seconds each.
Scientific Background
Based on: Word Frequency Judgment (Kucera & Francis, 1967; Brysbaert & New, 2009; Zipf, 1935) (Kucera et al., 1967)