Table 1.
Activity data (total number of crossovers; mean ± SEM) from Experiment 1.
| Experiment 1 | |||||
|---|---|---|---|---|---|
| Age of Experimental Animal (months) | |||||
| Test Day |
Testing Conditions |
Scoring Interval | 1.5 | 3.0 | 18.0 |
| 1 | Pre-Exposure | 30 min. | 33.13 ± 3.51* | 22.63 ± 2.86 | 8.88 ± 1.22* |
| 2 | Novel Object |
First 10 min. (with object) |
12.75 ± 1.90 | 11.63 ± 1.43 | 5.75 ± 0.94* |
| 3 | Familiar Object |
First 10 min. (with object) |
10.13 ± 1.87 | 6.88 ± 1.13 | 3.75 ± 1.13 |
| 4 | Novel (age- matched) |
10 min. (with social partner) |
32.75 ± 2.86* | 13.75 ± 1.50 | 3.13 ± 0.44* |
| 5 | Familiar (age- matched) |
10 min. (with social partner) |
26.38 ± 2.46* | 12.00 ± 1.32 | 4.38 ± 0.82* |
|
6 & 71 |
1.5 month partner (Novel) |
10 min. (with social partner) |
32.75 ± 2.86 | 11.13 ± 1.75# | 4.38 ± 1.05# |
| 3 month partner (Novel) |
10 min. (with social partner) |
20.63 ± 1.46 | 13.75 ± 1.50 | 3.75 ± 0.67 | |
| 18 month partner (Novel) |
10 min. (with social partner) |
15.88 ± 2.37 | 11.75 ± 2.66 | 3.13 ± 0.44 | |
1
Data for the same-aged unfamiliar partner were obtained from Day 4 of testing.
*
On days 1, 4, and 5 of testing, an asterisk denotes a significant difference from the 3-month-old group.
#
On days 6 and 7 of testing, a pound sign indicates a significant deviation from the crossovers exhibited by an animal interacting with an age-matched unfamiliar partner (value highlighted in gray).