Section 2(1) of the Homicide Act 1957 restricts diminished responsibility p
leas to abnormalities of mind which arise from one or more of the bracketed
causes contained in the subsection. It is only recently that the Court of
Appeal has begun to give any detailed consideration to the aetiological com
plexities of section 2(1). This article draws on these appellate decisions
and gives a critical analysis of the current legal position.