Intertextuality

Intertextuality is where movies borrow some aspects of another movie, this could consist of upon the props, camera, techniques, sound or editing. There are many reasons why movies tend to do this, one reason could be that the producers are illustrating the type of genre the movie is by including similar aspects of a successful movie. Examples of Intertextuality would be scenes from the famous movies of Psycho and Fatal Attraction

Psycho (1960)

This shower scene in Psycho has been borrowed and implemented onto other films by various film producers around the world with various conventions that are alike to that of Psycho, this shower scene is a well known  and recognized scene in film history (Classic Scene) 

Fatal Attraction (1987)

The kitchen knife used in this scene is the same in the one that they use in Psycho, which shows an example of Intertextuality. Another convention that is used is the white tiles and white shower curtains, these elements are aslo borrowed from the shower scene of Psycho