Sportisnotonlyphysicallychallenging,butitcanalsobementallychallenging.Criticismfromcoaches,parents,andotherteammates,aswellaspressuretowincancreateanexcessiveamountof__1__orstressforyoungathletes.Stresscanbephysical,emotional,orpsychologicalandresearchhasindicatedthatitcanleadtoburnout.Burnouthasbeendescribedas__2__orquittingofanactivitythatwasatonetimeenjoyable.Theearlyyearsofdevelopmentare__3__yearsforlearningaboutoneself.Thesportsettingisonewherevaluableexperiencescantakeplace.Youngathletescan,forexample,learnhowto__4__withothers,makefriends,andgainothersocialskillsthatwillbeusedthroughouttheirlives.Coachesandparentsshouldbeaware,atalltimes,thattheirfeedbacktoyoungsterscan__5__affecttheirchildren.Youngstersmaytaketheirparents’andcoaches’criticismstoheartandfindaflaw(缺陷)inthemselves.Coachesandparentsshouldalsobe__6__thatyouthsportparticipationdoesnotbecomeworkforchildren.Thatoutcomeofthegameshouldnotbemoreimportantthanthe__7__oflearningthesportandotherlifelessons.Intoday’syouthsportsetting,youngathletesmaybeworryingmoreaboutwhowillwininsteadof__8__themselvesandthesport.Followingagamemanyparentsandcoaches__9__ontheoutcomeandfindfaultwithyoungsters’performances.Positivereinforcementshouldbeprovidedregardlessoftheoutcome.Researchindicatesthatpositivereinforcementmotivatesandhasagreatereffectonlearningthatcriticism.Again,criticismcancreate__10__levelsofstress,whichcanleadtoburnout.