315. one of the major probrems facing dever.oping countries in the field of humanresources ls the so-called "brain drain". Because of the differences in li.ving anatworking conditions in developed and developing countries, many professionalsemigraee fron the developing countries to the deveroped market economies.Deveroping countries lose nol only millions of dortars of potential cDp but alsotheir investment in the education of these emigrants. The developing countriesthus lose much of thelr most skilled rabour force - the most important factor ofeconomic and social development. C. Some lessons of experience 316' Frorn this survey it is clear that, contrary to the opinion of some observersbefore the launching of the deveropment decades, the developing countries provedtheir ability to devetop rapidly over an extended period of time. rn addition toundergoing significant structural change and transforming the physical basis oftheir produccion, during the tears reviewed nany deveroping countries were abre toraise considerably their i.nvestment and saving rates, thereby rayinq the foundationfor their continued growth and development. However, it is also evident thatdespite considerable progress on the part of some deveroping countries, the overarlgrowth performance of the developlng countries during Ehe development decades wassignificantly belo!, their target rates of gronth during most of these years- TheIeast developed economies, ln particular. have laggeil in the process of worlddevelopment and continue to present a picture of persistent poverty andunder -development. one disturbing consequence of the alisappointing record withregard Co economic growth is the uidening disparities in standards of llvingbetween developed narket and qeveloping market economi.es and, within the lattergroup, betrreen the richer and poorer groups of developing countries.
**Analysis**
The text discusses the issue of brain drain in developing countries, which affects their human resources and economic growth. It also mentions the disparities in standards of living between developed and developing countries, as well as within the latter group. The text seems to focus on the economic and social aspects of development, particularly in the context of human resources and employment.

**Category**
Economic development, Employment