The self-report measures that make up the Behavior Assessment Battery (BAB) for children have been internationally investigated and shown to be reliable and valid test procedures. The cross-cultural data relative to emotional reaction to and speech disruption in speech situations (Speech Situation Checklist), coping behaviors used (Behavior Checklist) and speech-associated attitude (Communication Attitude Test and KiddyCAT) are in overwhelming agreement. They indicate higher scores for CWS than CWNS on each of the BAB test procedures. The BAB tests are useful as an aid in differential diagnostic decision making and allow for identification of treatment targets.