Empirical evidence shows that non-Likert scale (0,1,2,3) is 92% reliable while the Likert-type of scale had 90, 89, and 88% reliability. Validity was tested by using the Fisher transformation of the estimated Z score of series. The response space was proxied as a system to create a range between maximum and minimum values in the scale. Reliability was measured by the estimated of under system analysis. The data came from the numerical values of each type of scale. Our objective is to determine the reliability and validity of Likert and non-Likert scales used in research instrument. Reliability measures consistency and validity measures precision. In this paper, we answered two questions: What is the reliability of a response scale in a question? What is the validity of a response scale in a question? The purpose of this paper is to present practical tools for measuring the reliability and validity of response scales used in written survey.
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