Shame as a Self-Other-Conscious Emotion

On many standard readings, shame is an emotion that targets and involves the self in its totality. In shame, the self is affected by a global devaluation: it feels defective, objectionable, condemned. The basic question the speaker wishes to raise and discuss is the following: What does the fact that we feel shame tell us about the nature of self? Does shame testify to the presence of a self-concept, a (failed) self-ideal, and a capacity for critical self-assessment, or does it rather, as some have suggested, point to the fact that the self is in part socially constructed? Should shame primarily be classified as a self-conscious emotion, or is it rather a distinct social emotion?