Executive CEFR Velocity & Phonemic Transfer Radar
Longitudinal CEFR progression, Dominican Spanish linguistic phonemic transfer radar metrics, and dropout early-warning telemetry calibrated with Lurexa Mind models.
CEFR Cohort Velocity Radar & Progression Benchmarks
Empirical time-to-proficiency compared against international CEFR duration guidelines
Top Dominican Phonological Transfer Patterns
Acoustic error frequency detected in speaking submissions
Coda /s/ Aspiration / Deletion
Loss of plural & 3rd-person inflections
Initial /s/-cluster Epenthesis
Vowel insertion before 'sp-', 'st-', 'sk-'
Liquid Neutralization (/l/ vs /r/)
Lateralization in syllable codas
Tense vs. Lax Vowel Confusion (/i/ vs /ɪ/)
Minimal pair distinction (sheep vs ship)
Early Warning Radar: At-Risk Cohort Telemetry
Real-time indicators for learners falling behind pace
2 days inactive • Risk score: 78/100 (phonological stagnation)
9 days inactive • Risk score: 85/100 (dropout inactivity)