Individual differences and cross-situational consistency of dyadic social behavior.

A new theoretical analysis of individual differences and cross-situational consistency of behavior is proposed. The authors hypothesized that the social behavior of mice (Mus musculus) is determined by individual differences among animals in behavior emitted (i.e.

Early precursors of low attention and hyperactivity in a preterm sample at age four.

The increased numbers of low birth weight (LBW) survivors has raised questions about the direct association between LBW and later diagnosis of Attention Deficit Hyperactivity Disorder (ADHD) in early childhood. A longitudinal data set was used to determine the relationship among perinatal morbidity and medical and neurological status during the toddler period (18 and 30 months) with lower attention and higher activity, cardinal features of ADHD at age 4. The sample of 39 full term and 149 preterm infants were recruited at birth.