Impulsiveness, attention problems, low intelligence
and low educational attainment may all be
linked to deficiencies in the executive functions of the
brain, located in the frontal lobes. These executive
functions include: sustaining attention and concentration,
abstract reasoning and concept formation,
goal formulation, anticipation and planning, effective
self-monitoring and self-awareness of behaviour, and
inhibitions regarding inappropriate or impulsive
behaviours (79).