▁survey ▁research ▁at ▁the ▁University ▁of ▁Michigan . ▁He ▁is ▁also ▁a ▁research ▁associate ▁of ▁the ▁National ▁Bureau ▁of ▁Econom ics ▁Research . ▁He ▁is ▁a ▁column ist ▁for ▁the ▁online ▁international ▁business ▁magazine ▁Quart z , ▁where ▁his ▁column ▁co author ed ▁with ▁No ah ▁Smith , ▁" There ▁is ▁one ▁key ▁difference ▁between ▁k ids ▁who ▁excel ▁at ▁math ▁and ▁those ▁who ▁don ' t " ▁was ▁the ▁second ▁most ▁popular ▁article ▁in ▁ 2 0 1 3 . ▁Other ▁popular ▁columns ▁have ▁focused ▁on ▁education , ▁imm igration ▁policy , ▁how ▁to ▁get ▁into ▁Ph D ▁programs ▁in ▁econom ics , ▁ge opol it ics , ▁gay ▁marriage , ▁sex ism ▁in ▁econom ics , ▁the ▁Rein hart ▁and ▁Rog off ▁controvers y ▁and ▁negative ▁interest ▁rates . ▁On ▁his ▁blog , ▁" Conf essions ▁of ▁a ▁Supp ly ▁Side ▁Liberal ," ▁he ▁has ▁been ▁an ▁advoc ate ▁for ▁elimin ating ▁the ▁zero ▁lower ▁bound ▁on ▁nom inal ▁interest ▁rates ▁in ▁order ▁to ▁make ▁deep ▁negative ▁interest ▁rates ▁a ▁vi able ▁mon et ary ▁policy ▁option . ▁Three ▁former ▁Federal ▁Reserve ▁officials , ▁Don ▁K ohn , ▁Ben ▁Bern an ke ▁and ▁Nar ay ana ▁Koch er lak ota , ▁can ▁be ▁seen ▁discuss ing ▁his ▁proposal ▁for ▁elimin ating ▁the ▁lower ▁bound ▁on ▁interest ▁rates ▁here . ▁Many ▁of ▁his ▁blog ▁posts ▁have ▁been ▁translated ▁into ▁Japanese ▁and ▁some ▁into ▁Th ai . ▁Kim ball ▁is ▁a ▁Un itar ian - Univers al ist ▁lay ▁pre acher ▁after ▁having