31 lines
1.2 KiB
Markdown
31 lines
1.2 KiB
Markdown
# Comparative Research Knowledge
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## Comparative Research Principles
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When comparing two or more subjects, align same indicators under same conditions.
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| Criterion | Judgment |
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|-----------|----------|
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| Both subjects' data aligned on same indicator and year | OK |
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| Only one side has data | REJECT |
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| Indicator definitions differ between subjects | Warning (note the differences) |
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| Comparing absolute values without considering scale | Warning (add per-capita ratios) |
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### Aligning Comparison Axes
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When subjects differ in scale or background, direct comparison can be misleading. Normalize (per capita, per area, etc.) and explicitly state condition differences.
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## Comparative Data Collection
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In comparative research, data for only one side halves the value.
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| Criterion | Judgment |
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|-----------|----------|
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| Collected from the same data source for all subjects | OK |
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| Collected from different data sources per subject | Warning (verify comparability) |
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| Data missing for some subjects | Note gaps, limit comparison to available range |
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### Determining Non-comparability
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When indicator definitions fundamentally differ, report "not comparable" rather than forcing comparison. Identify partially comparable items and state the comparable scope.
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