Intertextuality

Intertextuality is a term used for films which are inspired by other films, this could also be seen as copying things from other directors. One of the main director's that has inspired other directors is Alfred Hitchock. ~
In pshyco his prestigious knife, shower cap shot, white towelts and the white shower curtain are used in other many films, from student films to proffesional hollywood movies.
In the image above we see his mis-en-scene, the white tiles have now been used in many films as phsyco was a big success, other directors want to imitate his success.