What is kitchen sink drama ? it's dramatist ? & kitchen sink realism ?

this is to add to what PAYAL has already mentioned

A kind of drama that was termed so as it realistically presented the world of working class living in one room apartment whoch served as kitchen , bedroom, living room. such as in ...

kitchen sink drama or kitchen sink realism is a movement started in 1960s in which the social reality could be seen in novel. in these kind of drama, the protagonist is disillusion...