They put them into a brain scan machine -- this is apocryphal by the way, but I don't care -- and they had them watch a horror movie, and then they had them describe their feelings toward their wives.
Mereka memasukkan orang-orang ini ke dalam pemindai otak -- sebenarnya ini diragukan kebenarannya, tapi saya tidak peduli -- dan mereka disuguhi film horor dan kemudian diminta menceritakan perasaan-perasaan mereka terhadap istri masing-masing.