| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| evolutionary theory of sleep | 0.51 | 0.1 | 812 | 83 | 28 |
| evolutionary | 1.13 | 0.7 | 7466 | 33 | 12 |
| theory | 0.73 | 1 | 9226 | 28 | 6 |
| of | 1.9 | 0.4 | 8448 | 81 | 2 |
| sleep | 1.83 | 0.3 | 4138 | 49 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| evolutionary theory of sleep | 1.27 | 0.2 | 6286 | 34 |
| evolutionary theory of sleep psychology | 1.69 | 0.1 | 5193 | 31 |
| what is the evolutionary theory of sleep | 0.6 | 0.8 | 4755 | 86 |
| evolutionary hypothesis about sleep | 0.82 | 0.9 | 4156 | 42 |
| theories of sleep psychology | 0.66 | 0.5 | 6936 | 83 |
| evolutionary function of sleep | 1.9 | 0.2 | 247 | 7 |
| the evolution of sleep | 1.68 | 0.3 | 285 | 41 |
| evolutionary insights into sleep evolution | 1.64 | 0.7 | 1867 | 14 |
| adaptive theory of sleep psychology | 0.58 | 0.3 | 7275 | 79 |
| evolution of sleep in humans | 0.76 | 0.5 | 2942 | 39 |
| the origins and evolution of sleep | 0.2 | 0.1 | 5836 | 78 |
| what theories explain the function of sleep | 0.53 | 0.1 | 4365 | 32 |
| sleep theories ap psychology | 1.31 | 0.8 | 8364 | 23 |
| the role that sleep plays in evolution | 0.18 | 0.8 | 9765 | 56 |
| theories of why we sleep | 0.53 | 0.7 | 7972 | 40 |
| two theories explaining the purpose of sleep | 1.24 | 0.7 | 7235 | 15 |
| theories about sleep duration | 0.2 | 0.1 | 1080 | 63 |
