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