National Ict Australia Limited

Eric Choi

Fang Chen

Muhammad Asif Khawaja

Natalie Ruiz

This invention concerns measuring cognitive load. A word based input is produced by a person while performing a task (). Predetermined grammatical features of the word based input are identified (). Then, the identified grammatical features are weighted and combined to provide a measure indicating the person's cognitive load (). The use of grammatical features represents a divergence from the known methods of providing a measure of a person's cognitive load. It is an advantage of the invention that by concentrating on the grammatical features it is able to provide an objective, non-intrusive measure of the person's cognitive load. Aspects the invention include a method, a computer system and software that are used to perform the method.

Measuring cognitive load

This invention concerns a method for measuring cognitive load of a person in performing a task. In other aspects the invention can be expressed as a computer and as software that are used to perform the method. The computer () has an interface having a plural number of unimodal input (to) and output devices, and a cognitive load analyzer (). The analyzer comprises a receiver to receive input data signal streams (and) from respective devices (and). A classifier (to), (to) and (to) is also provided to identify predetermined 'meta-interaction patterns' from the streams (and), and to weight the identified predetermined 'meta-interaction patterns' to produce respective weighted outputs. A combiner () to fuse the outputs to produce a measure indicating the person's cognitive load.

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West Pennant Hills, Australia

Eric Choi