Currently listed as an endangered language, San Pedros de Cajas dialect of Quechua has been under study and found in use mainly at home with Spanish being used in schools.
A survey conducted in a secondary school resulted in only one out of fifty students answering that he/she used Quechua at home.
North Junín Quechua holds a division of non-final verb suffixes into the left and right block.
The right block, usually inflectional, participates in similar fashion to final verb suffixes in allowing long vowels.
The "Down" morpheme "rpu" exists as a left hand block suffix and has productively led to "lpu" meaning overcoming resistance in addition to simplification to "ru.
[7] In addition, stops do not have aspiration or glottalization, but can be voiced; as discussed earlier, vowel length can be phonemic.
The variety of Tarma spoken in San Pedro de Cajas lacks a voiced bilabial stop /b/ and adds a voiceless uvular fricative /χ/.