average number of subordinate ideas correctly recalled per topic 

University of Michigan - Ann Arbor

- Topic Access
- Correlation
- Conditional Recall
- Overall recall

This could provide some insights for our study, but again, this experiment focuses on how participants encode and recall passages and what text processing mechanisms participants are using, not to prove that headings improve recall which is already backed by several experiments 

Performance of free recall was measured in 4 aspects 

Sanchez, Rebecca Polley ; Lorch, Elizabeth Pugzles ; Lorch, Robert F. (n.d.). Effects of Headings on Text Processing Strategies. Contemporary educational psychology. San Diego, CA: Elsevier Inc.

Effects of Headings on Text Processing Strategies

defined as the number of topics recalled if at least one subordinate idea is correctly paraphrased 

Topic Access

order of topics recalled vs order of same topics in the text

Correlation 

Conditional Recall

Overall recall is a performance metric in memory experiments, defined as the total number of ideas correctly recalled by a participant during a free recall task.

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