Taylor & Francis Online :: Negative Relations Between Pacifier Use and Emotional Competence – Basic and Applied Social Psychology – Volume 34, Issue 5. Negative Consequences of Pacifier Use on Emotional Intelligence Facial mimicry – recognising and copying outward displays of emotion – plays a key role in the development of emotional understanding. Can a … More Taylor & Francis Online :: Negative Relations Between Pacifier Use and Emotional Competence – Basic and Applied Social Psychology – Volume 34, Issue 5