Final answer:
Southam's second research study is not mentioned; instead, examples of unethical research practices, such as the Tuskegee Syphilis Study in Alabama and Laud Humphrey's restroom observations, are provided for historical context.
Step-by-step explanation:
Southam's second research study is not specifically mentioned in the provided references.
However, speaking generally about the historical context of unethical research practices, we can give examples such as the infamous Tuskegee Syphilis Study conducted by the U.S. Public Health Service. In this study, research subjects were African-American men in Alabama from 1932 to 1972.
This unethical study aimed to track the progression of syphilis among these men, who were misled and not treated, even after an effective treatment was found.
Another example includes Laud Humphrey's research in the 1960s, where he observed and questioned men at a park restroom without revealing his true identity or purpose.
Additionally, the Stanford prison experiment also involved ethical concerns, recruiting students from Stanford University to act as prisoners and guards.