Functional Linguistcs: the Prague School

Prince Nikolai Sergeyevich Trubetzkoy
Was one of the members of the Prague School.  He developed a vocabulary for classifying various types of phonemic, he distinguished between privative oppositions, in which two phonemes are identical except that one contains a phonetic “mark”.
















André Martinet

One of the key concept was the sound change is that of the functional        

yield of a phonological opposition.

Roman Osipovich Jakobson

His approach to phonology is the notion that there is a relatively simple, ordely, universal psychological system of sounds. 

William Labov

 His work is base in interviews of speakers in some speech community,

 being designed to elicit examples of some linguistics form, a variable,

 which is known to be realized in a variety of ways in that community.

The Prague School