BEIJING – A Chinese government think tank is urging the country’s leaders to start phasing out its one-child policy immediately and allow two children for every family by 2015, a daring proposal to do away with the unpopular policy.

Some demographers see the timeline put forward by the China Development Research Foundation as a bold move by the body close to the central leadership. Others warn that the gradual approach, if implemented, still would be insufficient to help correct the problems that China’s strict birth limits have created.

Xie Meng, a press affairs official with the foundation, said the final version of the report will be released “in a week or two.”