# Desirable and undesirable difficulties: Influences of variability, training schedule, and aptitude on nonnative phonetic learning

> Research article (Attention Perception & Psychophysics, 2020) · cited 40× · AI/ML

**Wikidata**: [openalex:W4229586216](https://www.wikidata.org/wiki/openalex:W4229586216)  
**Source**: https://4ort.xyz/entity/desirable-and-undesirable-difficulties-influences-of-variability-training-schedule-and-aptitude-on-nonnative-phonetic-le