Each modality is tested on two levels: Conceptual and Symbolic.
Because language involves words (symbols) and their meanings (concepts), each process in each modality is tested on two levels--conceptual and symbolic.
A Conceptual level test uses no words, just real items, replicas, or pictures of things, which are treated by the brain as real objects.
The Symbolic level test always includes a word in the task.
The following examples are ideal descriptions of how these tests should proceed,
Starting with the Receptive, Inner and Expressive processes in the Auditory modality, the Conceptual tasks are as follows:
Receptive: To demonstrate (by raising a finger) the ability to recognize a particular sound when it is heard again.
Notes: Hear an exampale of an Auditory Receptive Task at the Conceptual level.