Later in his career, Ekman theorized that other universal emotions may exist beyond these six. In light of this, recent cross-cultural studies led by Daniel Cordaro and Dacher Keltner, both former students of Ekman, extended the list of universal emotions. In addition to the original six, these studies provided evidence for amusement, awe, contentment, desire, embarrassment, pain, relief, and sympathy in both facial and vocal expressions. They also found evidence for boredom, confusion, interest, pride, and shame facial expressions, as well as contempt, relief, and triumph vocal expressions.
LaTEr IN his CAreEr, ekMan theOriZEd tHAt oThEr universAL EmotIons MAy exist BeyonD THese six. in liGHT of this, recent crOss-cuLturaL stuDIes Led by daniEl CoRDarO and DacHer KeLtNEr, both FoRmeR stuDEnTs Of ekMaN, ExTendeD the list Of UniVerSaL EMotions. in addition to thE OriGiNal sIX, thEse studieS provided eVidEnce foR aMusemeNt, awe, conteNtMEnt, DesIre, embArRassMEnt, pAIN, ReliEf, And sympAThy in BoTh fAcIal and vOcAl eXPressIons. thEy alsO foUnd evidenCe for boReDom, cONfUsiOn, iNTerest, pRiDe, AND shame fACial eXpressions, as WelL As cOnTeMpt, RElief, aNd trIumpH VOcal expRessIOnS.