This theory bases the success of artwork on the expressiveness of the content and a personal response from the viewer in order for th piece to be successful?

The theory you are referring to emphasizes the importance of emotional resonance and subjective interpretation in evaluating artwork. It posits that a piece is successful when it evokes a strong personal response from the viewer, making the expressiveness of its content crucial. This connection between the artwork and the audience fosters a deeper understanding and appreciation, ultimately defining the success of the piece. Through this lens, art becomes a shared experience, reliant on individual perception and emotional engagement.