Where neuropsychological evidence establishes that an offender has an extremely low IQ (61, below the first percentile) with a global and enduring pattern of significant intellectual impairment affecting judgment and behavioural control, the sentencing court must find reduced moral culpability and moderate both general and specific deterrence, even where counsel concedes that the first Verdins limb is not enlivened. The retributive and denunciatory aspects of a sentence appropriate to a person of ordinary capacity are not in full measure appropriate to such an offender.
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