Table 1
Mean mental rotation Response Times (RTs, in milliseconds) and Error Rates (%E, in percent) with standard errors (SE), as a function of angle or rotation.
| Angle | RT | Errors | ||
|---|---|---|---|---|
| M | SE | %E | SE | |
| 0 | 1801 | 77 | 5.3 | 0.7 |
| 50 | 2415 | 106 | 7.3 | 1.0 |
| 100 | 3026 | 120 | 13.4 | 1.8 |
| 150 | 3191 | 117 | 18.8 | 2.6 |
Table 2
Cube naming scheme for the 48 baseline objects. For instance, “2_3_3_2” means that the corresponding object is composed of a sequence of 4 connected arms of length 2, 3, 3, and 2 cubes, respectively. More than one distinct object can be generated from a given cube sequence. This is indicated by the letters at the end of the cube sequence descriptors. The stimuli in bold were used in the validation study.
| Cube sequence | Filename |
|---|---|
| 2_3_3_2_A | 1.jpg |
| 2_3_3_2_B | 2.jpg |
| 2_3_3_2_C | 3.jpg |
| 2_3_3_3_A | 4.jpg |
| 2_3_3_3_B | 5.jpg |
| 2_3_3_3_C | 6.jpg |
| 2_3_4_2_A | 7.jpg |
| 2_3_4_2_B | 8.jpg |
| 2_3_4_2_C | 9.jpg |
| 2_3_4_3_A | 10.jpg |
| 2_3_4_3_B | 11.jpg |
| 2_3_4_3_C | 12.jpg |
| 2_4_3_2_A | 13.jpg |
| 2_4_3_2_B | 14.jpg |
| 2_4_3_2_C | 15.jpg |
| 2_4_3_3_A | 16.jpg |
| 2_4_3_3_B | 17.jpg |
| 2_4_3_3_C | 18.jpg |
| 2_4_4_2_A | 19.jpg |
| 2_4_4_2_B | 20.jpg |
| 2_4_4_2_C | 21.jpg |
| 2_4_4_3_A | 22.jpg |
| 2_4_4_3_B | 23.jpg |
| 2_4_4_3_C | 24.jpg |
| 3_3_3_2_A | 25.jpg |
| 3_3_3_2_B | 26.jpg |
| 3_3_3_2_C | 27.jpg |
| 3_3_3_3_A | 28.jpg |
| 3_3_3_3_B | 29.jpg |
| 3_3_3_3_C | 30.jpg |
| 3_3_4_2_A | 31.jpg |
| 3_3_4_2_B | 32.jpg |
| 3_3_4_2_C | 33.jpg |
| 3_3_4_2_D | 34.jpg |
| 3_3_4_3_A | 35.jpg |
| 3_3_4_3_B | 36.jpg |
| 3_3_4_3_C | 37.jpg |
| 3_4_3_2_A | 38.jpg |
| 3_4_3_2_B | 39.jpg |
| 3_4_3_2_C | 40.jpg |
| 3_4_3_3_A | 41.jpg |
| 3_4_3_3_B | 42.jpg |
| 3_4_3_3_C | 43.jpg |
| 3_4_4_2_A | 44.jpg |
| 3_4_4_2_B | 45.jpg |
| 3_4_4_2_C | 46.jpg |
| 3_4_4_3_B | 47.jpg |
| 3_4_4_3_C | 48.jpg |
Figure 1
Example of mental rotation stimuli. At the top is an example of a “same” stimulus in which the object on the right can be put in congruency with the baseline object on the left by a rotation around the vertical axis. At the bottom is an example of a “different” stimulus, for which this is not possible. The angular disparity between the two objects in this case is 150 degrees.
Figure 2
Results of the validation study. Mean response times (top) and error rates (bottom) are shown as a function of angle of rotation for the subset of 96 stimuli used in the study. Only data from correct trials are included in the response times graph.
Figure 3
Single stimulus data. Mean response times for each stimulus used in the study are shown, broken down by trial type and angular disparity.