Who keeps children alive? A review of the effects of kin on child survival

Evolution and human behavior Vol/Iss. 29(1) Elsevier Published In Pages: 1-18
By Sear, Rebecca, Mace, Ruth


The presence of older siblings who are potential helpers will have a positive effect on child survival (11).


5 of the 6 studies for which there was sufficient data found that potential sibling helpers has a positive effect on child survival. "Potential helpers" included only siblings several years older than the focal child. (Hypothesis tested by observing the proportion of previous studies with the hypothesized effect. No formal statistical test)


Test NameSupportSignificanceCoefficientTail


Variable NameVariable Type OCM Term(s)
Child MortalityDependentMortality
Sibling MortalityIndependentMortality