| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| sperling's experiment | 1.24 | 0.8 | 9907 | 48 | 21 |
| sperling's | 1.08 | 0.8 | 17 | 99 | 10 |
| experiment | 1.46 | 0.4 | 4599 | 96 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| sperling's experiment | 1.48 | 0.5 | 6057 | 74 |
| sperling's experiment on iconic memory | 0.44 | 0.6 | 7501 | 68 |
| sperling iconic memory test | 1.07 | 1 | 9752 | 5 |
| george sperling iconic memory | 0.25 | 1 | 7897 | 37 |
