psychological research to investigate theory of mind. It has been suggested that lacking a Theory of Mind may be the reasoning behind some of the communication difficulties accompanied by individuals with autism. Thought Mental chronometry Neuropsychological tests: These are standardized test which are given in the same manner to all examinees and are scored in a similar fashion. The examinees scores on the tests are interpreted by comparing their score to that of healthy individuals of a similar demographic background and to standard levels of operation. List of animal tests Memory Working memory Delayed-non-matching to place Trial-unique delayed non-matching to location Short-term memory Y-maze Long-term memory Morris water maze Contextual fear conditioning Attention 5-choice serial reaction time task Executive control Reversal learning Motivation Fixed-ratio/Progressive ratio task See also Cognition Intelligence quotient References Further reading External links Human Intelligence Psychological tests and scales