Development of the Chinese Smell Identification Test.

Smell identification ability reflects the functional integrity of the human olfactory system. Its deficit is a prodromal marker for Parkinson's disease and is also implicated in Alzheimer's disease and other neurological and psychiatric disorders. Considering the impact of cultural factors on odor identifiability, we have developed a smell identification test specifically for the Chinese population (CSIT), which includes 40 odor items that are familiar to this population, presented in a multiple-choice format.