Table 3.
Variable loadings of the behavioral parameters used in the Principal Component Analysis in the Isolation/Reunion test.
| Percentage per axis | Relative cumulative values | |||||
|---|---|---|---|---|---|---|
| IsoReuPC1 | IsoReuPC2 | IsoReuPC3 | IsoReuPC1 | IsoReuPC2 | IsoReuPC3 | |
| Cumulative inertia | 31.5 | 70.5 | 82 | – | – | – |
| Time spent standing immobile | 22.89 | 3.49 | 6.33 | −50.52 | −5.20 | −7.82 |
| Time spent looking at exit door | 2.98 | 37.10 | 13.93 | −6.57 | −55.32 | −17.21 |
| Time spent in proximal zone | 6.69 | 5.34 | 47.46 | 14.77 | 7.96 | −58.61 |
| Time spent in distal zone | 27.34 | 2.16 | 3.26 | −60.33 | 3.22 | 4.03 |
| Number of virtual zone changes | 21.90 | 5.86 | 19.76 | −48.32 | 8.74 | −24.39 |
| Time spent exploring the room | 12.00 | 25.83 | 2.60 | −26.47 | 38.52 | 3.21 |
| Latency to enter proximal zone | 6.21 | 20.22 | 6.66 | −13.69 | −30.15 | 8.22 |
All Principal components (PCs) having an Eigen value above one were kept to build behavioral response scores. The first line of the table indicates the cumulative inertia explained by the PCs. For each PC, the percentage of (left side) as well as the relative cumulative value (right side) of a given parameter is indicated. Parameters having a percentage above the uniform distribution can be considered as explanatory parameters for a given PC. Parameters quantifying total duration or numbers were standardized per minute.