Covariational conditional

The covariational conditional construction, also known as the comparative correlative construction, is the commonly used "the X'er, the Y'er" structure in English, for example:

"The more I think about it, the less I understand."
"The sooner, the better."

The structure is composed of two Dependent and [independent variables|variables]: an independent variable and a dependent variable.
In construction grammar this pattern is considered a construction because the pattern is not predictable from any other fact of English grammar already established about 'the'.
'The normally occurs with a head noun but in this construction, it requires a comparative phrase. The two major phrases resist classification as either noun phrases or clauses. The requirement that two phrases of this type be juxtaposed is another non-predictable aspect of the pattern. Because the pattern is not strictly predictable, a construction must be posited that specifies the particular form and function involved'.