| Similarity | Rank | |
|---|---|---|
| qualitative | 0.870 | 8275 |
| empirical | 0.796 | 4558 |
| psychophysical | 0.790 | 55717 |
| co-citation | 0.787 | 50595 |
| observational | 0.785 | 16782 |
| bibliometric | 0.777 | 38436 |
| quantification | 0.777 | 16316 |
| non-experimental | 0.772 | 59691 |
| psychometric | 0.772 | 35230 |
| quantitive | 0.771 | 83119 |
| sociolinguistic | 0.771 | 21133 |
| statistical | 0.769 | 3592 |
| cross-national | 0.765 | 39708 |
| methodology | 0.765 | 5742 |
| analysis | 0.760 | 799 |
| multivariate | 0.758 | 25697 |
| neuropsychology | 0.758 | 51023 |
| quantifiable | 0.756 | 24532 |
| definitional | 0.756 | 31123 |
| probabilistic | 0.755 | 23233 |
| econometric | 0.752 | 18842 |
| correlational | 0.751 | 81763 |
| itpa | 0.751 | 95573 |
| culture-free | 0.749 | 90508 |
| systematic | 0.748 | 4208 |