he Tuskegee syphilis study is often used as an example of: A groundbreaking study using facebook A study that did not take into account ethical considerations A study guided by the ethical guidelines of the American medical association (AMA) A study that breached confidentiality of participants 15- what is another term for the independent variable? Treatment variable Dependent variable Control variable Factorial variable 16- qualitative research can be defined by which of the following? Directly tests the quality of a cause and effect relationship Examines human behavior in the contexts in which they occur Typically leads to high-quality numeric data One of the oldest formalized types of research used in the social and behavioral sciences .