Which of the following research projects is NOT a descriptive design? FYI, all of these were real studies! HINT: re-watch the Week 2 methods lectures to make sure you understand the difference between experimental and descriptive designs

a. Jane Goodall observed chimpanzees for years and was eventually accepted into chimp society as a low-ranking female. Through her observations, she discovered that chimps use tools.
b. Alfred Kinsey interviewed people about their sexual experiences. Based on his findings, he developed a scale measuring sexual orientation, ranging from " O " (completely heterosexual) to "6" (completely homosexual).
c. In a gruesome accident, a railroad worker named Phineas Gage had a three foot long iron tamping rod shoot through his head. He survived the accident but his personality changed completely. As a result of the changes in his behavior and abilities, doctors studying his case hypothesized that the frontal