Studies, such as those by William Labov in the 1960s, have shown that social aspirations influence speech patterns. This is also true of class aspirations. In the process of wishing to be associated with a certain class (usually the upper class and upper middle class) people who are moving in that direction socio-economically will adjust their speech patterns to sound like them. However, not being native upper class speakers, they often hypercorrect, which involves overcorrecting their speech to the point of introducing new errors. The same is true for individuals moving down in socio-economic status.