And there was no association between TV or any screen time and other issues such as hyperactivity or problems interacting with friends.

BBC: TV time 'does not breed badly behaved children'

The researchers assessed children at the age of three-and-a-half for signs of emotion problems, such as worry and sadness, and behavioural problems, such as hyperactivity.

BBC: NEWS | Health | Father's blues can blight babies

What undoubtedly benefits a small number of children with specific problems, such as hyperactivity, can all too easily become an instant, cheap cure-all for youngsters who may be misbehaving because they are bored, miserable, badly nourished or for any other reason.

ECONOMIST: Education: Behave, or else | The

The advice also stresses the need to make sure that children take medicine for conditions such as attention deficit hyperactivity disorder or for behavioural problems on the trip.

BBC: NEWS | Health | Homesickness 'can be prevented'

Now, the first study of its kind has found that most are psychologically healthy, though they're at "slightly increased risk" for behavioral problems such as attention deficit hyperactivity disorder or oppositional defiant disorder.

NPR: Adopted Teens Face Higher Risk for ADHD

The project could lead to new understandings of various diseases such as schizophrenia, autism and attention deficit hyperactivity disorder.

FORBES: Magazine Article

Low-birth weight is linked to an increased risk death and disability, and a range of long-term health problems, such as diabetes, heart disease, Attention Deficit Hyperactivity Disorder (ADHD) and depression.

BBC: NEWS | Health | More tiny babies being born in UK