A similar distinction exists between exploratory research and conclusive research.
It may serve as the input to conclusive research.
One camp argues that because there has been no conclusive medical research, children should not be allowed to perform headers until more information is available.
But more conclusive research is needed, she said.
It said: "We found no conclusive research that planning policy or guidance is a particular constraint on economic development.
I have not seen any conclusive research showing that speed itself is actually a cause of accidents.
But there is not conclusive research to determine whether these conditions have a dietary link.
No conclusive research has been published on this hypothesis yet.
As the report acknowledges, there is no conclusive research that links stereotyping with gender inequality.
The Commission says that more conclusive research is needed into how equality is affected.