Fricative&AffricateSoundChangesContinuants-15Fricatives-9Sibilants–4Note–thisisahierarchy!!Duration&IntensityDifferences•VoicelessFricatives–longer&moreintensethanvoicedcognates.•**ErrorsonVLsoundsmorenoticeablethanonVsounds.•**TherapyonVL–shouldbegivenpriority.Frequency(Pitch)Differences•Asplacemovesbackpitchlowers.TongueConfiguration•Placement/GroovingDifferences•V&VL“th”–tongueisflat•/s/and/z/-narrowgroove•“sh”androuge–grooveiswider!LipPositionDifferences•Fricatives&affricates(except/f/and/v/)–lippositionisneutral(flat&spread)•/h/-freeofspecificationsforlip&tongueposturesDistribution&FrequencyofOccurrence•Fricative&affricates–occurinallwordpositionswith2exceptions!!•Rouge–doesn’toccurinwordinitialposition•/h/-doesn’toccurinwordfinalposition•/s/-occursmostfrequently!•“ch”androuge–occurmuchlessfrequently.ClusterData•Fortherapy–needtolookatclusterdataaswell!!•VLfricativeclusters–moreprevalentthanvoiced.•“s”clusters–mostprevalent.Fricative&AffricateSubstitutions•Substitutionsforfricatives/affricates–generallyinvolveotherfricativesorstops.•PracticeTape3A(module5)Dentalizedsibilants•Dentalized–tonguegetstoocloseorabutswithaveolarridge.•PracticeTape3A–module6Lateral“lisps”•“wet”or“slurpy”•PracticeTape3A–module7