The present authors studied on the corrective measure in Likert technique in comparing the strength of psychological motive among various groups with different value systems.
The principles of this corrective measure are as follows:
1) Calculate the corrective coefficient (K).
a: sum of the maximum weighting score which have been categorized for confirmation.
b: sum of the maximum weighting score which have been categorized for negation.
2) Correct the scoring rate (Crude Index: C.I.) by means of I. The crude Index for each person have been calculated by a'/b'.
a' is the sum of obtaining score for each person who have been categolized for confirmation, and b' is the sum of obtaining score for each for negation.
The Corrective Index (Cr. I.) can be obtained by a'/b'. E1/K.
This corrective measure would make it easy to compare scores in various groups as shown in an example of Morale survey by Likert technique.