Final answer:
Dr. Innis is conducting a case study by examining the tactile perception of a blind woman.
Step-by-step explanation:
The researcher who is conducting a case study is Dr. Innis, who is examining the tactile perception of a blind woman. A case study is an in-depth investigation of a single person, group, event, or community. Dr. Innis's focus on a detailed examination of one individual's perceptions aligns well with the definition of a case study. Dr. Henriette is investigating memory, which could involve experimental research; Dr. Kulik is surveying political attitudes, which fits survey research; and Dr. Jefferson is observing children, which is likely to be naturalistic observation rather than a comprehensive case study approach.