response: Things like child intentions, cohabitation, social support among other things.
history: I grew up with 8 older siblings, pretty crazy right? I think it has something to do with a fertility factor, but I have no idea what that is really, can you explain it? Hey sure!  Fertility factors can determine the likely number of children a person will have. Hmm I see.  Do they cause that prediction of the number of kids? Well no, they are mainly correlations, either positive or negative. Alright, can you elaborate on what some of those things are?
knowledge: Factors generally associated with increased fertility include the intention to have children, very high gender equality, religiosity, inter-generational transmission of values, marriage and cohabitation, maternal and social support, rural residence, and pro family government programs.