Another important contribution of Paul Lazarsfeld was his advancement to media effects research that he was able to bring into fruition. Lazarsfeld's “most important methodological contributions were the Lazarsfeld-Stanton Program Analyzer and focus group interviewing” according to Everett Rogers. The LazarsfeldStanton Program Analyzer, or "Little Annie" as it was called, provided audience members with a device that had a red button and a green button. When an experimental audience member viewed mediated content, they were able instantly communicate through the two buttons if what they witnessed was likable or it was not. The second research method that was used in tandem with Little Annie was focus group interviewing. After using the tool and viewing the artifact, the participants of the study then filled out a questionnaire, and then discussed the content. The tool was a boon because it allowed for broadcast content to be revised and also be rated for effectiveness. This tool was useful to truly measure audience analysis and reception of a message via a mediated channel. These tools produced both qualitative and quantitative data.