TABLE 2.

Descriptive statistics

Variable	Mean (SD)	Min, Max (possible range)	Skewness	Kurtosis
Maternal anxiety symptoms (EPDS-3A)	1.94 (0.7)	1, 3.67 (1–4)	0.46	−0.66
Perceived Stress Scale	12.99 (6.54)	0, 34 (0–40)	0.55	0.28
Maternal depression symptoms (mean of items 1, 2, 6, 7, 8, 9, 10)	1.5 (0.47)	1, 3.14 (1–4)	1.18	1.02
Dyadic reciprocity	3.69 (0.64)	2, 5 (1–5)	−0.17	−0.38
Fluency	3.51 (0.69)	1, 5 (1–5)	−1.15	2.87
Adaptation regulation	3.9 (0.7)	2, 5 (1–5)	−0.17	−0.5
Behavioral synchrony (composite)	3.71 (0.54)	2.33, 5 (1–5)	−0.22	−0.03