A cognitive module is a specialized tool or sub-unit that can be used by other parts to resolve cognitive tasks. It is used in theories of the modularity of mind and the closely related society of mind theory and was developed by Jerry Fodor. It became better known throughout cognitive psychology by means of his book, The Modularity of Mind (1983). The nine aspects he lists that make up a mental module are domain specificity, mandatory operation, limited central accessibility, fast processing, informational encapsulation,‘shallow’ outputs, fixed neural architecture, characteristic and specific breakdown patterns, and characteristic ontogenetic pace and sequencing. Not all of these are necessary for the unit to be considered a module, but they serve as general parameters.