A further complication is that different speakers can regard very different values as prototypical , making it difficult to assess which of two objects is greener even on one dimension ( Berlin and Kay 1969 , pages 10 -- 12 ) .
basic color terms
Brent Berlin Paul Kay
( The green chair , said in the presence of two greenish chairs , would refer to the one that is closest to prototypical green . ) A further complication is that different speakers can regard very different values as prototypical , making it difficult to assess which of two objects is greener even on one dimension ( Berlin and Kay 1969 , pages 10 -- 12 ) . ( Ideally , GRE should also take into account that the meaning of color words can differ across different types of referent .
A further complication is that different speakers can regard very different values as prototypical , making it difficult to assess which of two objects is greener even on one dimension ( @@CITATION , pages 10 -- 12 ) .