Schutz's View on Consciousness Perception

The question asks about the theorist who believed individuals understand others' consciousness from their own subjective experience, or "stream of consciousness."

Understanding Alfred Schutz's Phenomenology

Alfred Schutz, a key figure in phenomenology and sociology, explored how individuals experience the social world. He focused on the subjective, first-person perspective – the individual's "stream of consciousness."

Schutz argued that our understanding of others is fundamentally based on our own lived experience. We interpret the actions and consciousness of others by projecting our own subjective states and common-sense knowledge onto them. This process occurs within the unique framework of our individual consciousness.

This perspective directly addresses the idea of grasping the consciousness of others *while* living within one's own subjective reality. It emphasizes the inherent subjectivity in social perception.

Identifying the Correct Theorist

Based on Schutz's phenomenological approach to the social world and intersubjectivity, he is the theorist associated with the view that people grasp the consciousness of others from within their own stream of consciousness.

Therefore, the correct option is Alfred Schutz.