primitivism

/P R IH1 M AH0 T IH0 V IH0 Z AH0 M/
noun
  1. 1

    The state or quality of being primitive.

  2. 2

    The opinion that life was better or more moral among primitive peoples, or among children, and has deteriorated with civilization.

  3. 3

    Any of a group of related styles in the arts, influenced by a belief in the superiority of primitive forms.

Source: https://en.wiktionary.org/wiki/primitivism