An emerging effective way of measuring the proficiency of a heritage speaker is by speech rate. A study of gender restructuring in heritage Russian showed that heritage speakers fell into two groups: those who maintained the three-gender system and those who radically reanalyzed the system as a two-gender system. The heritage speakers who reanalyzed the three-gender system as a two-gender system had a strong correlation with a slower speech rate. The correlation is straightforward—lower proficiency speakers have more difficulty accessing lexical items; therefore, their speech is slowed down.