Tru st is a tricky busines s、 On the one hand, i t’s a necessary con dition _ __1_ __ m an y w or th wh ile th ings: ch ild c are, frie ndshi ps , etc、 On the oth er hand, putting your ___2___ , in the wrong place often carries a high ___3___ 、_ __4___, w hy do we trust a t all? Wel l, becaus e it f eels g ood、 ___5___ people place th eir tr ust in a n individual or an institu ti on , t heir brains release o xytocin , a horm on e t hat ___6 ___ plea surable feelin gs and triggers the herding in stru ct that prom pts humans to ___7___ with one another 、 Sc ie ntists ha ve found that exposur e __ _8 ___ this hormone puts us in a tr ust ing _ __9__ _: I n a Swi ss study, r esearchers spr ayed oxyt ocin into the n oses of half the subjects; those subjects were ready to lend significa ntly h ig her amou nt s of m oney t o st rangers than were thei r _ __10___ who in haled someth ing else、_ __11___ for us, we also have a sixth sense for dishon esty that may ___12___ us、 A Cana dia n s tudy fou nd t hat chi ld ren as young as 14 mon th s can differe nti at e _ __13___ a cre dible p er son and a dishon est one 、 Sixt y toddl er s were each _ __14___ to an adult t ester hol ding a plasti c c ontai ner 、 T he tes ter wo uld ask, “What's in her e?” before looki ng i nt o t he container , s mil ing, and excl aiming , “ Wow!” Each subject w as then in vited to look ___15___ ...