Expected handedness for Austruca lactea is 50% right-handed and 50% left-handed
Observed handedness (based on raw totals across all data sets) is 50.32% right-handed, 49.68% left-handed
The following figure displays the left and right counts for each individual data set.
| Reference | Right Count | Left Count | Right % | Left % | Notes |
|---|---|---|---|---|---|
| Rosenberg (2000) | 2 | 4 | 0.333 | 0.667 | |
| Yamaguchi (1977) | 312 | 315 | 0.498 | 0.502 | |
| Yamaguchi (1977) | 902 | 877 | 0.507 | 0.493 | |
| Yamaguchi (1977) | 791 | 801 | 0.497 | 0.503 | |
| Yamaguchi (1977) | 113 | 117 | 0.491 | 0.509 | |
| Yamaguchi (1977) | 482 | 464 | 0.510 | 0.490 | |
| Yamaguchi (1977) | 533 | 525 | 0.504 | 0.496 | |
| Yamaguchi (1977) | 273 | 273 | 0.500 | 0.500 | |
| Yamaguchi (1977) | 86 | 96 | 0.473 | 0.527 | |
| Yamaguchi (1977) | 51 | 52 | 0.495 | 0.505 | |
| Yamaguchi (1977) | 14 | 17 | 0.452 | 0.548 | |
| Yamaguchi (1977) | 26 | 22 | 0.542 | 0.458 | |
| Yamaguchi (1977) | 69 | 69 | 0.500 | 0.500 | |
| Yamaguchi (1977) | 50 | 41 | 0.549 | 0.451 | |
| Yamaguchi (1977) | 72 | 71 | 0.503 | 0.497 | |
| Yamaguchi (1977) | 30 | 21 | 0.588 | 0.412 | |
| Yamaguchi (1977) | 169 | 161 | 0.512 | 0.488 | |
| Yamaguchi (1977) | 98 | 95 | 0.508 | 0.492 | |
| Yamaguchi (1994) | 29 | 29 | 0.500 | 0.500 |