Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12983-018-0261-1/MediaObjects/12983_2018_261_Fig2_HTML.gif)
Frequency of digging (a) and rearing (b) per hour of UE- and SE-daughters during the social encounter week. Spontaneous behavior was merged from recorded videos on the first, second, fourth and last day of the social encounter week. UE-daughters: daughters whose mothers had lived in an unstable social environment during pregnancy and lactation; SE-daughters: daughters whose mothers had lived in a stable social environment during pregnancy and lactation. Data are shown as medians, 10th, 25th, 75th and 90th percentiles, and outliers. Statistics: Wilcoxon signed-rank test, *p < 0.05. NUE-daughters = NSE-daughters = 11