The essential tool for SLPs understanding the Mandarin speech intelligibility development! Key Features: 1. Evidence-based:The Mandarin Chinese Speech Intelligibility Development Chart provides evidence-based data for both boys and girls regarding intelligibility development for single syllable words. 2. English and Chinese Versions:Our chart caters to a diverse audience with both English and Chinese versions available. 3. Easy to use: With engaging visuals, the chart is a handy and effective