In this type of statistical test, the statistical null hypothesis is the hypothesis which, if true, supports the experimenter's theoretical hypothesis. Consequently, in AS testing, the experimenter would prefer not to obtain "statistical significance."
In AS testing, accepting the null hypothesis supports the experimenter's theoretical hypothesis.
For more information see the chapter on Power Analysis .

The following video provides you with the correct English pronunciation of the word "Accept-Support (AS) Testing", to help you become a better English speaker.