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Leonard David Eron (pronounced Ear- On) (April 22, 1920 – May 3, 2007) was an American psychologist best known for his Columbia County Longitudinal Study that concluded television viewing led to violence.

Life and career

Born in Newark, New Jersey, he earned his doctorate in clinical psychology at University of Wisconsin - Madison in 1949.

He taught at University of Iowa from 1962 to 1969, and later at the University of Illinois at Chicago. In 1990 he took a position at University of Michigan.

Co-authored with Monroe M. Lefkowitz and Leopold O. Walder, the study followed participants from 1960 to 2000. They researchers interviewed the parents and peers and analyzed television viewing. They found a correlation between exposure to violence via parents or television and violent behavior.[1]

Husband of Madeline Eron, Father of Barb Eron, Don Eron and Joni Eron Hobson, and Grandfather of Sami Eron and Jesse Eron.

Eron was co-editor of the 1986 report, "Television and the Aggressive Child: A Cross-National Comparison." He also testified before the United States Congress on youth violence in 1992.


In 1980 he was awarded the APA's Award for Distinguished Professional Contributions to Applied Research

He died at his home in Lindenhurst, Illinois of congestive heart failure on May 3rd 2007.[2]


  1. Sullivan, Patricia (May 21, 2007). Leonard D. Eron, 87; Linked TV Content To Aggression and Destructive Behavior. Washington Post
  2. Pearce, Jeremy (May 12, 2007). Leonard Eron, 87, Is Dead; Researcher on TV’s Tie to Violent Conduct. New York Times

External links

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