Jameson Young, 4, left, plays with a smart phone as his brother Nolan, 3, looks on at their home, in Boston, Monday, Jan. 27, 2014. Child development experts say it?s natural for toddlers to be fascinated with their own image, and that interest plays an important developmental role as they develop a sense of self. (AP Photo/Steven Senne)
Nolan Young, 3, front, looks at a smart phone while his brother Jameson, right, 4, looks at a smart tablet at their home, in Boston, Monday, Jan. 27, 2014. Child development experts say it?s natural for toddlers to be fascinated with their own image, and that interest plays an important developmental role as they develop a sense of self. (AP Photo/Steven Senne)
Julie Young, a Boston-based behavioral analyst, center, sits with her sons Nolan, 3, left, and Jameson, 4, right, while looking at a smart phone at their home, in Boston, Monday, Jan. 27, 2014. Child development experts say it?s natural for toddlers to be fascinated with their own image, and that interest plays an important developmental role as they develop a sense of self. (AP Photo/Steven Senne)
In this December 2012 image provided by Brandi Koskie, her husband Shelton Koskie is shown seated with their daughter Paisley Koskie, then age two, at their Wichita, Kansas home as she plays with an iPad. An increasing number of parents of toddlers are finding their tech-savvy 2- and 3-year-old kids are obsessed with selfies. (AP Photo/Brandi Koskie)
In this January 2014 photo provided by Brandi Koskie, her daughter, Paisley, 3, uses Facetime at her home in Wichita, Kansas to chat with her cousin, who lives in Oklahoma. An increasing number of parents of toddlers are finding their tech-savvy 2- and 3-year-old kids are obsessed with selfies (AP Photo/Brandi Koskie)
This January 2014 screen grab shows a photo collage provided by Brandi Koskie of her daughter, Paisley, 3, in selfies that Paisley shot on her mother’s phone in an unsupervised moment at her Wichita, Kansas home. An increasing number of parents of toddlers are finding their tech-savvy 2- and 3-year-old kids are obsessed with selfies. (AP Photo/Brandi Koskie)
Massachusetts Gov. Deval?Patrick, right, greets Transit Police Officer Richard Donohue, left, as he enters the House chamber at the Statehouse before his State of the State address, Tuesday, Jan. 28, 2014, in Boston. Donohue suffered a gun shot wound during a shoot-out with the Boston Marathon bombing suspects. (AP Photo/Steven Senne)
Massachusetts Gov. Deval?Patrick, center, greets law makers and guests as he enters the House chamber at the Statehouse before his State of the State address, Tuesday, Jan. 28, 2014, in Boston. While the economy continues to recover, the governor says many people in the state are still being left behind. (AP Photo/Steven Senne)
Massachusetts Gov. Deval?Patrick, right, delivers his State of the State address in the House chamber at the Statehouse, Tuesday, Jan. 28, 2014, in Boston. While the economy continues to recover, the governor says many people in the state are still being left behind. Mass. Speaker of the House Robert DeLeo is seated at left. (AP Photo/Steven Senne)
ADDS WIFE'S NAME - Massachusetts Gov. Deval?Patrick, right, greets Transit Police Officer Richard Donohue, left, and his wife Kim, as he enters the House chamber at the Statehouse before his State of the State address, Tuesday, Jan. 28, 2014, in Boston. Donohue suffered a gun shot wound during a shoot-out with the Boston Marathon bombing suspects. (AP Photo/Steven Senne)
ADDS WIFE'S NAME - Massachusetts Gov. Deval?Patrick, right, greets Transit Police Officer Richard Donohue, left, and his wife Kim, as he enters the House chamber at the Statehouse before his State of the State address, Tuesday, Jan. 28, 2014, in Boston. Donohue suffered a gun shot wound during a shoot-out with the Boston Marathon bombing suspects. (AP Photo/Steven Senne)