This article re-evaluates the concept of "difficult temperament," documenting the difficulty of differentiating normal difficult behavior from difficult temperament, and difficult temperament from diagnosable psychiatric disorder. Researchers and clinicians acknowledge that childhood aggression is occurring with greater frequency and at younger…

The goal of this review of the clinical and research literature is to identify, describe, and critique published methods for assessment of attention and related functions in preschool children (ages 6 and younger). The need for valid assessment of preschool children has grown dramatically in the past two decades following the implementation of…

Negative emotionality and poor attention may combine or interact as risk factors in development. Negative emotionality is considered a challenge for self-regulation, whereas good attention is a potential means of self-regulation. In the current study, composites of 1- and 2-year maternal ratings of negative emotionality and global ratings of…