Theory 80/Tip-of-the-tongue/Threshold lens
Blocking Needs Partial Access
The claim
A tip-of-the-tongue state requires a threshold of partial access, so a word with no features retrieved produces no feeling of knowing.
01Mechanism
The state is triggered by partial activation; below the threshold there is nothing to feel.
02Prediction
Occurrence should track partial retrieval.
03Refutation
Occurrence tracking familiarity would remove the threshold.