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Emotion-detecting digital tutor boosts students' grades

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March 6, 2012

The AutoTutor computerized tutorial system is able to adjust its teaching style, according...

The AutoTutor computerized tutorial system is able to adjust its teaching style, according to the detected psychological state of the student (Photo via Shutterstock)

As proposed by psychologist Mihaly Csikszentmihalyi, "flow" is an ideal psychological state in which we are engaged enough by a task not to find it boring, and yet not so challenged by it that we get discouraged. When learning new subjects, however, students often end up falling at one end or the other of that scale. Now, a new computerized tutoring system has been developed to keep students in the "flow" zone. It does so by monitoring their emotional state, then adjusting its teaching method to steer them away from boredom or frustration.

Called AutoTutor, the system was created by University of Notre Dame Assistant Professor of Psychology Sidney D'Mello, Art Graesser from the University of Memphis, and a colleague from MIT. It teaches complex concepts in Newtonian physics, computer literacy and critical thinking.

AutoTutor (along with its sister program, Affective AutoTutor) works by holding a natural-language conversation with the student, in which it asks them questions about the subject. By analyzing their responses, it is able to assess their knowledge level, and can subsequently recognize and address misconceptions that they may have regarding the material. Additionally, it is able to respond to their own questions or criticisms, and is designed to maintain their interest with images, animations and simulations.

More importantly, however, it also monitors their facial features, body language and conversational cues, in order to gauge their psychological state. Should it detect negative emotions, it will subtly alter the pace, direction and complexity of the learning task, to improve the situation. It can also alter its own "emotions" accordingly, by changing the content and intonation of its verbal responses, and the facial expressions of the on-screen animated teacher.

"Most of the 20th-century systems required humans to communicate with computers through windows, icons, menus and pointing devices," said D'Mello. "But humans have always communicated with each other through speech and a host of nonverbal cues such as facial expressions, eye contact, posture and gesture. In addition to enhancing the content of the message, the new technology provides information regarding the cognitive states, motivation levels and social dynamics of the students."

In tests on over 1,000 students, AutoTutor reportedly resulted in a learning gain of approximately one letter grade. According to the researchers, this is better than what can be expected from a novice human tutor, and approaches the proficiency of an expert tutor.

A paper on the technology is about to be published in the journal ACM Transactions on Interactive Intelligent Systems.

Source: University of Notre Dame

About the Author
Ben Coxworth An experienced freelance writer, videographer and television producer, Ben's interest in all forms of innovation is particularly fanatical when it comes to human-powered transportation, film-making gear, environmentally-friendly technologies and anything that's designed to go underwater. He lives in Edmonton, Alberta, where he spends a lot of time going over the handlebars of his mountain bike, hanging out in off-leash parks, and wishing the Pacific Ocean wasn't so far away.   All articles by Ben Coxworth
3 Comments

Very interesting. It seems as though the Education paradigm is shifting quite rapidly.

Bruce H. Anderson
7th March, 2012 @ 08:26 am PST

It might help in some ways, but I doubt it can get around truly challenging learning experiences. I don't think changing the pace and direction of a lesson would make it any easier for me to learn how to play a musical instrument or a foreign language. Some things are simply difficult.

Gadgeteer
7th March, 2012 @ 04:06 pm PST

Just then the waiting will no longer exit. help is on the way....love this.

Okechukwu D Odinaka
9th March, 2012 @ 05:06 am PST
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