Final answer:
Charles Horton Cooley studied symbolic interactionism and the self within the field of sociology, developing the concept of the looking-glass self.
Step-by-step explanation:
Charles Horton Cooley pursued the discipline of sociology by studying symbolic interactionism and the self. He is well-known for his concept of 'the looking-glass self,' which suggests that individuals form their self-image through their interpretation of how others perceive them. Cooley's work in sociology also addressed concerns about individualism and its impacts on society and familial structures, emphasizing the significance of social interaction in the development of individual identity.