It has been observed that in the 1960s, the Ig (index of marital fertility) in Sri Lanka for the first time, fell at least ten per cent below the plateau level of the pre-1960 decades [1].

It has been observed that in the 1960s, the Ig (index of marital fertility) in Sri Lanka for the first time, fell at least ten per cent below the plateau level of the pre-1960 decades [1].

Once effective methods of fertility limitation become widely available within a population, the impact of fertility intentions on subsequent fertility becomes a matter of both theoretical and practical importance.

Once effective methods of fertility limitation become widely available within a population, the impact of fertility intentions on subsequent fertility becomes a matter of both theoretical and practical importance.