noun
authorial identity; distinctive style as a writer/creator
Refers to the unique, recognizable qualities that define a writer's or creator's work, such as themes, voice, or artistic signature. Often used in literary and media criticism.
彼の作品には強い作家性が感じられる。
You can feel a strong authorial identity in his works.
この監督の映画は作家性がはっきりしている。
This director's films have a clear distinctive style.
作風 is 'style of a work' or 'artistic style', focusing on the outward characteristics of the works themselves, whereas 作家性 emphasizes the creator's inner identity and consistent personal touch.
Compound of 作家 (writer, creator) and 性 (nature, quality). The exact origin is uncertain, but it likely emerged in modern literary criticism to discuss the concept of 'auteur' or authorial signature.