Oddly Wired
← all facts
memory

You have a limit to your internal mental voice.

The phonological loop was introduced as a model component by Baddeley and Hitch in 1974, but the finding that its capacity is limited by rehearsal/pronunciation time was demonstrated by Baddeley in 1975.

Change the citation from 1974 to 1974/1975 to distinguish between the model's inception and the empirical validation of its capacity constraints.

Your ability to hold information in mind is limited by your internal speaking speed.

Where this comes from

Study
Alan Baddeley, 1974
What the check found
Baddeley and Hitch (1974) proposed the phonological loop as a component, but the specific empirical constraint based on articulation time came in 1975.
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.