Table 1.
Analysis of deviance table (Type II tests) of main effects and interaction effects (order-one interactions; *) in the selected model of MR task performance (measured as the natural logarithm of the response time; log RT).
| Fixed effects | Chisq | df | p | Chisq/df |
|---|---|---|---|---|
| Main effects | ||||
| d° | 159.25 | 1 | 1.65e−36 | 159.25 |
| PlaneDir | 253.81 | 5 | 8.36e−53 | 50.76 |
| PA | 42.86 | 2 | 4.93e−10 | 21.42 |
| Gender | 14.47 | 1 | 1.42e−4 | 14.47 |
| FR | 2.04 | 1 | .15 | 2.04 |
| Interaction effects | ||||
| PA*d° | 146.14 | 2 | 1.84e−32 | 73.07 |
| PlaneDir*d° | 52.63 | 5 | 4.01e−10 | 10.52 |
| PlaneDir*PA | 43.79 | 10 | 3.59e−6 | 4.38 |
| PlaneDir*FR | 20.81 | 5 | 8.81e−4 | 4.16 |
This analysis covered: d° (degrees of the rotation to be imagined), PlaneDir (plane and direction in which the rotation was performed), PA (physical activity of the subjects), Gender (sex of the subjects), FR (frame of reference used by the subjects to perform the MR task). The Table also shows, for each possible main effect and each statistically significant interaction effect, Chi-squared statistics (Chisq), degrees of freedom (df), p-value (where p is the probability that a Chi-squared distribution with a given df is superior to the observed Chisq) and a statistic (Chisq/df) in order to stress the importance of the various effects (the higher the ratio, the more important the effect39).