Table 2 Statistical summary of performance metrics: improved IGAs vs. standard IGAs.
|  |  | groups | Average | Difference 95% CI | SD | t | p | df | Cohen’s d |
|---|---|---|---|---|---|---|---|---|---|
Completion time | Improved IGAs | Professional group (n = 80) | 108.813 | 102.061 ~ 115.564 | 30.34 | 32.078 | < 0.0001 | 79 | 3.586 |
Non-professional group (n = 40) | 130.65 | 119.832 ~ 141.468 | 33.827 | 24.427 | < 0.0001 | 39 | 3.862 | ||
Standard IGAs | Professional group (n = 80) | 163.637 | 152.887 ~ 174.388 | 48.307 | 30.298 | < 0.0001 | 79 | 3.387 | |
Non-professional group (n = 40) | 175.575 | 157.644 ~ 193.506 | 56.067 | 19.806 | < 0.0001 | 39 | 3.132 | ||
Number of clicks | Improved IGAs | Professional group (n = 80) | 20.175 | 19.370 ~ 20.980 | 3.617 | 49.889 | < 0.0001 | 79 | 5.578 |
Non-professional group (n = 40) | 23 | 21.834 ~ 24.166 | 3.644 | 39.914 | < 0.0001 | 39 | 6.311 | ||
Standard IGAs | Professional group (n = 80) | 29.337 | 28.161 ~ 30.514 | 5.287 | 49.636 | < 0.0001 | 79 | 5.549 | |
Non-professional group (n = 40) | 31.85 | 29.820 ~ 33.880 | 6.347 | 31.737 | < 0.0001 | 39 | 5.018 | ||
Iteration number | Improved IGAs | Professional group (n = 80) | 12.313 | 11.621 ~ 13.004 | 3.108 | 35.431 | < 0.0001 | 79 | 3.961 |
Non-professional group (n = 40) | 13.95 | 12.796 ~ 15.104 | 3.609 | 24.448 | < 0.0001 | 39 | 3.866 | ||
Standard IGAs | Professional group (n = 80) | 14.225 | 13.426 ~ 15.024 | 3.59 | 35.444 | < 0.0001 | 79 | 3.963 | |
Non-professional group (n = 40) | 16.975 | 15.960 ~ 17.990 | 3.174 | 33.821 | < 0.0001 | 39 | 5.348 |
