The value of qualitative improvements poses tricky problems for economists.

Natural selection does not select for any kind of qualitative improvement.

To bring about qualitative improvement in teaching and learning process.

The quantitative loss would be met by a qualitative improvement.

Overall there would be some increase in the recruitment of girls, but no qualitative improvement.

We are not succeeding in implementing this line of reform, which is intended to bring about a qualitative improvement.

We also note a qualitative and quantitative improvement in the management of those funds.

This can be described as both a quantitative and qualitative improvement.

We hope this will serve to increase transparency and constitute a qualitative improvement.

It is not, therefore, just a quantitative increase which is involved, but also an important qualitative improvement.