1. A computer based system for testing the cognitive performance of at least one examinee comprising: at least one source network entity (SNE) having machine readable instructions, at least one test development system, local memory, and a plurality of executable files stored in said memory; a data distribution system (DDS) logically connected to said source network entity; at least one destination network entity (DNE) logically connected to said data distribution system wherein said DNE has local memory; (b) generating a computer signal train comprising said at least one set of instructions, said at least one test development system and said plurality of executable files and transmitting said computer signal train to said data distribution system; (c) embodying said computer signal train in a carrier wave using said data distribution system; (d) distributing said carrier wave embodying said computer signal train to said destination network entity; (e) displaying general and motivational instructions to said examinee;