Hyperrational is an adjective. The adjective is the word that accompanies the noun to determine or qualify it.

What does Hyperrational mean?

: extremely rational Would a secular, hyperrational country facing this same array of threats have acted differently?— Fareed Zakaria Work was supposed to be a hyperrational realm of logic, filled with timetables, organizational charts and returns on investment.— Anne Kreamer.

What is hyper rational thinking?

The research term is hyper-rational thinking. It's related to the idea that the appraisal centers of your brain highlight and emphasize and amplify the meaning and significance and import of a positive aspect of an experience.