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  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <import namespace="http://fasb.org/us-gaap/2017-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd" xmlns="http://www.w3.org/2001/XMLSchema" />
  <import namespace="http://xbrl.sec.gov/country/2017-01-31" schemaLocation="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="OtherForeignCountriesMember" id="crai_OtherForeignCountriesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DescriptionOfBusinessDisclosureAbstract" id="crai_DescriptionOfBusinessDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DocumentAndEntityInformationAbstract" id="crai_DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockRepurchaseDuringPeriodAverageCostPerShare" id="crai_StockRepurchaseDuringPeriodAverageCostPerShare" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AntidilutiveSecuritiesExcludedFromComputationOfWeightedAverageNumberOfDilutedSharesOutstandingAbstract" id="crai_AntidilutiveSecuritiesExcludedFromComputationOfWeightedAverageNumberOfDilutedSharesOutstandingAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfReimbursableExpensesIncludedInRevenuesTableTextBlock" id="crai_ScheduleOfReimbursableExpensesIncludedInRevenuesTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareRepurchaseProgramAbstract" id="crai_ShareRepurchaseProgramAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="crai_AllowanceForUnbilledServices" name="AllowanceForUnbilledServices" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoansCurrent" name="ForgivableLoansCurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoansNoncurrent" name="ForgivableLoansNoncurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_IncreaseDecreaseInForgivableLoans" name="IncreaseDecreaseInForgivableLoans" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoansAbstract" name="ForgivableLoansAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoansDisclosureTextBlock" name="ForgivableLoansDisclosureTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ScheduleOfForgivableLoansActivityTableTextBlock" name="ScheduleOfForgivableLoansActivityTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoansActivityAbstract" name="ForgivableLoansActivityAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoans" name="ForgivableLoans" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoansAmortization" name="ForgivableLoansAmortization" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ScheduleOfNetIncomeAvailableToCommonShareholdersTableTextBlock" name="ScheduleOfNetIncomeAvailableToCommonShareholdersTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoansTranslationAdjustments" name="ForgivableLoansTranslationAdjustments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoansAdvances" name="ForgivableLoansAdvances" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_BasisOfPresentationAndEstimatesDisclosureAbstract" name="BasisOfPresentationAndEstimatesDisclosureAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_NumberOfBroadAreasOfConsultingServices" name="NumberOfBroadAreasOfConsultingServices" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ScheduleOfAccountsReceivableAllowanceTableTextBlock" name="ScheduleOfAccountsReceivableAllowanceTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ScheduleOfAllowanceForUnbilledServicesTableTextBlock" name="ScheduleOfAllowanceForUnbilledServicesTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_AllowanceForUnbilledServicesIncreasesToReserves" name="AllowanceForUnbilledServicesIncreasesToReserves" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_AllowanceForUnbilledServicesAmountsWrittenOff" name="AllowanceForUnbilledServicesAmountsWrittenOff" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_AllowanceForUnbilledServicesEffectsOfForeignCurrencyTranslation" name="AllowanceForUnbilledServicesEffectsOfForeignCurrencyTranslation" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoansRepayments" name="ForgivableLoansRepayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_AllowanceForDoubtfulAccountsReceivableForeignCurrencyTranslationGainLoss" name="AllowanceForDoubtfulAccountsReceivableForeignCurrencyTranslationGainLoss" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_DivestitureOfInterestInConsolidatedSubsidiariesAbstract" name="DivestitureOfInterestInConsolidatedSubsidiariesAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_Gnu123LiquidatingCorpMember" name="Gnu123LiquidatingCorpMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_AllowanceForUnbilledServicesRollForward" name="AllowanceForUnbilledServicesRollForward" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_C1ConsultingLlcMember" name="C1ConsultingLlcMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoansAccruals" name="ForgivableLoansAccruals" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_StockIssuedDuringPeriodValueShareBasedCompensationEmployees" name="StockIssuedDuringPeriodValueShareBasedCompensationEmployees" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_StockIssuedDuringPeriodValueShareBasedCompensationNonEmployees" name="StockIssuedDuringPeriodValueShareBasedCompensationNonEmployees" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_C1ConsultingMember" name="C1ConsultingMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_NewAccountingPronouncementsNotYetAdoptedAbstract" name="NewAccountingPronouncementsNotYetAdoptedAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_IncreaseDecreaseInIncentiveCashAwardsExpenses" name="IncreaseDecreaseInIncentiveCashAwardsExpenses" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ExcessTaxBenefitOnShareBasedCompensationNotPreviouslyRecognized" name="ExcessTaxBenefitOnShareBasedCompensationNotPreviouslyRecognized" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ScheduleOfChangesInContingentConsiderationLiabilityTableTextBlock" name="ScheduleOfChangesInContingentConsiderationLiabilityTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_BusinessAcquisitionEarnOutPeriodMaximum" name="BusinessAcquisitionEarnOutPeriodMaximum" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherCurrentLiabilities" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherCurrentLiabilities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityResultingFromRemeasurements" name="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityResultingFromRemeasurements" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityResultingFromPayments" name="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityResultingFromPayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityEffectsOfForeignCurrencyTranslations" name="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityEffectsOfForeignCurrencyTranslations" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityAcquisition" name="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityAcquisition" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_DeferredRentExpense" name="DeferredRentExpense" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ChangesInContingentConsiderationLiabilityRollForward" name="ChangesInContingentConsiderationLiabilityRollForward" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityAccretion" name="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiabilityAccretion" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_ForgivableLoansReclassificationToOtherReceivables" name="ForgivableLoansReclassificationToOtherReceivables" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="crai_CapitalExpendituresPaidByThirdParty" name="CapitalExpendituresPaidByThirdParty" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
</xsd:schema>
