| Process | Terms | Databases/search engine | Matches |
| Step 1 |
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| Search 1: Specific terms | - definition of learning - concept of learning | EBSCO Host Library databases | - definition of learning (N = 255) - concept of learning (N = 2.843) |
| Search 2: Specific terms | - definition of learning - concept of learning | ERIC | - definition of learning (N = 337) - concept of learning (N = 1.065) |
| Search 3: Specific terms | - definition of learning - concept of learning | PubPsych | - definition of learning (N = 33) - concept of learning (N = 176) |
| Search 4: Specific terms | - definition of learning - concept of learning | FID | - definition of learning (N = 7) - concept of learning (N = 12) |
| Search 5: Specific terms | - definition of learning - concept of learning | PhilPapers | - definition of learning (N = 0) - concept of learning (N = 73) |
| Step 2 |
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| Search excluding - exact duplicates - specific forms of learnings - lack of higher-level concept of learning - lack of differentia specifica - lack of any information about a definition of learning |
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| Total: N = 28 |
| Step 3 |
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| Search 6: Specific terms | - definition of learning - concept of learning | Bibliography of identified texts | - definition of learning (N = 1) - concept of learning (N = 1) |