title: Preface to the special issue on covert contrasts.
authors.affiliation: a Department of Speech and Hearing Sciences , University College Cork , Cork , Ireland.
authors.forename: Fiona E
authors.initials: FE
authors.lastname: Gibbon
authors.affiliation: a Department of Speech and Hearing Sciences , University College Cork , Cork , Ireland.
authors.forename: Alice
authors.initials: A
authors.lastname: Lee
mesh_terms: D002648:Child; D002663:Child Language; D006801:Humans; D010700:Phonetics; D013061:Speech Acoustics; D013064:Speech Disorders / Q000175:diagnosis*; D014463:Ultrasonography