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. 2007 Feb 27;274(1614):1181–1187. doi: 10.1098/rspb.2006.0366

Table 2.

Raw and (adjusted) mean ratings of willingness-to-help across distinct cousin categories, adjusted for age differences and residential distance.

category of cousins total sample (N=195) those having all the four cousins (N=56)


mean s.d. N mean s.d.
MoSis children 6.05 (6.12) 1.42 149 5.89 (5.88) 1.23
MoBro children 5.73 (5.74) 1.46 148 5.59 (5.58) 1.36
FaSis children 5.59 (5.68) 1.32 126 5.39 (5.42) 1.55
FaBro children 5.50 (5.51) 1.11 131 5.34 (5.34) 1.67