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Fact · Languages and accents

55percent

The 11 dictations in the 2002 Tehran study equal 55 percent of the term's 20 sessions, if each dictation fell in a separate session.

Checked against its source on October 17, 2026

What it measures: A simple ratio of the two counts above.
How it is calculated: 11 / 20 = 0.55, so 55 percent
What it does not show: It assumes no session had two dictations; the abstract does not say.

Calculated from

In the 2002 Tehran study, the experimental group was given dictation 11 times during the term, in addition to the textbook listening exercises.
The term in the 2002 Tehran study consisted of 20 sessions.

Cited on

Dictation for Language Learning: How and Why It WorksGuide

Dictation was 55 percent of the 2002 term's sessions | Yap