SCIENCE: In Interrogations, Teenagers Are Too Young to Know Better.

Even when police interrogators left the room, cameras kept recording the teenage suspects. Some paced. Several curled up and slept. One sobbed loudly, hitting his head against the wall, berating himself. Two boys, left alone together, discussed their offense, joking.

What none did, however, was exercise his constitutional rights. It was not clear whether the youths even understood them.

Therefore none had a lawyer at his side. None left, though all were free to do so, and none remained silent. Some 37 percent made full confessions, and 31 percent made incriminating statements.

These were among the observations in a recent study of 57 videotaped interrogations of teenagers, ages 13 to 17, from 17 police departments around the country. The research, published in Law and Human Behavior, adds to accumulating evidence that teenagers are psychologically vulnerable at the gateway to the criminal justice system. Youths, some researchers say, merit special protections.

Hmm.