Non-natural pattern identification for cognitive assessment

A non-transitory computer-readable medium encoding a computer program product operable to cause data processing apparatus to perform operations comprising:

• receiving first information concerning a person, the first information specifying the person's responses, and lack thereof, for items of a cognitive test administered to the person, wherein the cognitive test comprises multiple item-recall trials used to assess cognitive impairment;
• analyzing the first information using a classification algorithm trained on second information concerning a group of people to whom the cognitive test has been administered, the classification algorithm generated in accordance with a first part and a second part, the first part distinguishing between cheaters and non-cheaters, and the second part distinguishing between impaired cheaters and non-impaired cheaters;
• and
• identifying, based on the analyzing, the person as a cheater requiring a verification test to confirm an initial result of the cognitive test.

A system comprising:

• a user device;
• and
• one or more computers operable to interact with the device and to perform operations comprising:
• receiving first information concerning a person, the first information specifying the person's responses, and lack thereof, for items of a cognitive test administered to the person, wherein the cognitive test comprises multiple item-recall trials used to assess cognitive impairment;
• analyzing the first information using a classification algorithm trained on second information concerning a group of people to whom the cognitive test has been administered, the classification algorithm generated in accordance with a first part and a second part, the first part distinguishing between cheaters and non-cheaters, and the second part distinguishing between impaired cheaters and non-impaired cheaters;
• and
• identifying, based on the analyzing, the person as a cheater requiring a verification test to confirm an initial result of the cognitive test.