This is the 9757th most frequent Spanish word.
autobiográficos
Relating to or describing a person's own life or experiences.
Here, 'autobiográficos' is used as an adjective describing the noun 'diarios', indicating that the journals pertain to the author's own life.
Los diarios del autor son completamente autobiográficos.
The author's journals are entirely autobiographical.
In this sentence, 'autobiográficos' describes 'elementos', specifying that the elements in the stories are reflective of one's own life.
Prefiero leer cuentos que incluyan elementos autobiográficos.
I prefer to read stories that include autobiographical elements.
The term 'autobiográficos' is used here to describe 'tintes', showing that the movie has aspects influenced by the director's personal experiences.