Table 2. Statistical analysis of inter-individual face similarity (cosine similarity) between different family relationships, within the adult marmoset family.

Comparison of t-statistics, p-value, and Cohen’s d on cosine similarities were compared between the three family relationships. The relationship pairs that showed significant differences were bolded.

Relationships	t-Value	p-Value	Cohen’s d
Mother-father vs. father-son	–1.941	0.083	–0.868
Mother-father vs. mother-son	–0.613	0.548	–0.274
Father-son vs. mother-son	1.460	0.177	0.653