mood bias

Paying more attention to how my mood may influence my reaction to a work of art.

free radical

In chemistry the ‘radical’ (e.g., an atom without a paired electron) tends to be very reactive. We try to find certain words that have an unpaired electron, so to speak, that will attract and create the reaction that is metaphor, two things binding as they react to (and against) one another and if not creating a chemical reaction per se, creating a strong mental or emotional response in us.