A fourth use of a reference model is to create clear roles and responsibilities.

The sooner everyone can agree on a clear role, the better off the Blazers will be moving forward.

People talk about the role of chairman or chief executive as though these are clear definitive roles.

Japanese women had a very clear role in Japanese society.

Simply by doing their jobs, the city workers have taken on clear symbolic roles.

Though it's still being studied, getting enough sleep has other clear roles in helping kids stay fit.

They provide Islamic education for children, thereby filling a clear religious and social role in the country.

Guard officials say that 384 of the base's 926 members would have no clear role without the A-10 planes.

Using imaging studies, scientists found that the visual word form area played a clear role in reading.

But in other areas, cultural differences played a clear role in student achievement.