The Irrational Behavior Scale is a five-point
Likert scale including 69 items. It mainly
measures the individual’s irrational thoughts
to oneself, for example, thoughts prefaced by
“I should,” “I must,” and “by all means,”
which reveal excessive self-expectations.
The higher the score, the higher the individual’s
degree of irrationality. The 2-week testretest
reliability is between 0.57 and 0.78.
The concurrent validity standard coefficient
is 0.74 (Yang, 1983) when using the “individual
existence faith” as index, which was
modified by S.L. Cai for measuring the degree of irrationality. This scale was used to
measure the patient’s irrational beliefs