Effect of abortion cost on fertility

The availability and cost of abortion has been considered an important factor influencing female fertility. This page discusses some channels of influence, and how one might tease apart those channels of influence.

Broad description of channels of influence

Story where the availability or cost reduction in abortion reduces the female's completed fertility by one

The most plausible story for this is that all the following happen:

Condition	What happens if the condition is violated?
The female was not planning to have any additional children at the time she got pregnant.	If the female was anyway planning to have more children, then the availability or lack thereof of abortion may simply substitute between present kids and future kids rather than affecting her completed fertility.
The female's having a pregnancy that she wishes to abort was not affected by the availability or cost of abortion	It may well be possible that the availability of abortion causes females to have more unprotected (or poorly protected) sex than they otherwise might, and therefore, the fetuses they end up aborting are fetuses they would not have had in the first place had the law been stricter or the costs higher.