In 1932, Rensis Likert published A Technique for the Measurement of Attitudes, introducing the Likert Scale. This now ubiquitous five-point scale measures attitudes by asking participants to answer using numbers 1 through 5, from "strongly disagree" through "disagree," "neutral," and "agree," to "strongly agree." The instrument has remained a staple of the rating industry as well as of training feedback sheets, down to the present day.
1932 | Rensis Likert: A Technique for the Measurement of Attitudes. |