The interview method matured from intuitive art to teachable craft before becoming a science

Evidence

Interviewing evolved to craft status as its experienced practitioners became able to articulate rules of thumb teachable to apprentices. It is only beginning to develop to the status of a science with an organized body of theory from which new testable relations can be derived and that can evolve by assimilating new findings. — John T. Jost and Jim Sidanius, Political Psychology, 368

Categorization

• DEFINE: Defines a three-stage taxonomy of methods: art, craft, and science, distinguished by whether practitioners can verbalize and transmit their technique.