Dr. Okawa is interested in studying the effect that neurological trauma can have on short-term memory. Firstly, he collects detailed information from a small number of individuals who have experienced brain damage. Using information provided by medical records, interviews, and observations, he attempts to create an in-depth portrait of each individual. What type of research method was used in this study

case study

Explanation:

A case study is defined as a process or a method of research where a detailed information or a detailed study is done on a person or a population over a period of time. It is an in-depth thorough study done on the subject of interest to come to conclusion within the real world context.

In the context, Dr. Okawa first collects the data or information form a small number of individuals suffering from brain damage and then creates a in-depth study on the information provided by the interviews conducted or the from the medical records.

Thus, Dr. Okawa uses case study as a research method for this study.

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