TABLE 3B.

Post-hoc t-test results for Rough-and-Tumble Play induced 50-kHz USV in pairs of juvenile female HET and WT rats.

SAME GENOTYPE CAGE MATES
Pair First play partner	WT-WT	HET-HET	t-test (WT-WT vs. HET-HET)	HET-WT	WT-HET	t-test (WT-WT vs. HET-HET)
Same-genotype	233.4 + 8.1	159.3 + 26.5	t17 = 3.751, p = 0.002*	245.6 + 22.3	279.7 + 14.7	t18 = 0.777, p = 0.447
Opposite-genotype	278.4 + 46.6	275.6 + 17.4	t8 = 2.050, p = 0.075	243.1 + 9.9	256.2 + 16.9	t7 = 3.305, p = 0.013*
t-test (same vs. opposite)	t8 = 2.437, p = 0.041*	t7 = 3.810, p = 0.007*		t8 = 0.102, p = 0.922	t8 = 1.054, p = 0.323
MIXED GENOTYPE CAGE MATES
Pair First play partner	WT-WT	HET-HET	t-test (WT-WT vs. HET-HET)	HET-WT	WT-HET	t-test (WT-WT vs. HET-HET)
Same-genotype	251.0 + 15.4	209.8 + 29.7	t18 = 0.986, p = 0.337	265.0 + 22.7	283.8 + 12.9	t18 = 2.537, p = 0.021*
Opposite-genotype	259.6 + 26.3	245.9 + 15.8	t8 = 0.493, p = 0.635	236.6 + 6.0	241.2 + 10.8	t8 = 0.407, p = 0.695
t-test (same vs. opposite)	t8 = 0.280, p = 0.787	t8 = 1.071, p = 0.316		t8 = 1.207, p = 0.262	t8 = 2.539, p = 0.035*

All data are shown as mean number of calls per min + SEM.

*Indicates a significant difference of p < 0.050. Section “3.3.2. Effects of the First Play Partner and Genotype of the Cage Mate on 50-kHz USV.”