Complexity resolved: profile of a Slovenian child with protracted phonological development over an intervention period.

This paper describes the complex phonological patterns of one Slovenian-speaking girl with protracted phonological development who received phonological intervention. At 4;6, the child's word length, stress and vowels were age-level, but she showed reduced match levels (accuracy) for syllable structure and consonants. Unusual constraints on word position and sequences, particularly concerning fricatives and stops, resulted in many assimilations, reduplications and metatheses. Addressing these constraints in the first intervention period (to 4;9) led to higher overall accuracy and a transition from less typical to more typical mismatches ("errors"), e.g., sibilant grooving (stridency) and rhotic production as singletons and in clusters. The profile focuses on that initial pre- and post-treatment period, giving a brief overview of the follow-up intervention and outcomes and reflecting on implications for future research and clinical practice. The abstract is available in Slovenian language (see Supplementary material).