One hypothesis is that nonverbal and verbal codes, being functionally independent, can have additive effects on recall.

The kids had developed a verbal code, or flight language, to guide Icarus.

One is that if there are verbal 'codes', they cannot be fixed: on the contrary, they must be changing all the time.

Both visual and verbal codes can be used when recalling information (Sternberg, 2003).

It was a kind of verbal code he made up for himself to protect his destinations from those who might overhear.

Most of that was in verbal code and I've already stuck my neck out letting you phone at all.

He picked up on the verbal code and turned back to Cramer.

Adelle can switch November to a combat-ready personality using verbal codes.

It was short, in verbal code, and signed by Magnan.

This falls into two categories: verbal codes, and transmitted codes.