title: Comparative Markedness and Induced Opacity.
abstract: Results are reported from a descriptive and experimental study that was intended to evaluate comparative markedness (McCarthy 2002, 2003) as an amendment to optimality theory. Two children (aged 4;3 and 4;11) with strikingly similar, delayed phonologies presented with two independent, interacting error patterns of special interest, i.e., Deaffrication ([tɪn] 'chin') and Consonant Harmony ([ɡɔɡ] 'dog') in a feeding interaction ([kik] 'cheek'). Both children were enrolled in a counterbalanced treatment study employing a multiple base-line single-subject experimental design, which was intended to induce a grandfather effect in one case ([dɔɡ] 'dog' and [kik] 'cheek') and a counterfeeding interaction in the other ([ɡɔɡ] 'dog' and [tik] 'cheek'). The results were largely supportive of comparative markedness, although some anomalies were observed. The clinical implications of these results are also explored.
authors.affiliation: Department of Linguistics, Indiana University Memorial Hall 322, 1021 E. Third Street Bloomington, IN 47405, U.S.A.  dinnsen@indiana.edu.
authors.forename: Daniel A
authors.initials: DA
authors.lastname: Dinnsen
authors.forename: Judith A
authors.initials: JA
authors.lastname: Gierut
authors.forename: Ashley W
authors.initials: AW
authors.lastname: Farris-Trimble