Recent research studies have been conducted to compare working memory between speech and ASL (American Sign Language). Your text describes two studies that have compared the memory spans for spoken language versus signed language. The results of these two studies are best characterized as:

The correct answer is :  As one study

Explanation:

This is considered as one study reporting similar memory spans for speaking and signing individuals and the other reporting differences in memory spans for speaking and signing individuals. Verbal working memory tasks involve language production for recall and in both fields the integration shows mechanisms for verbal information.