Hawker v Miller

The appeal concerned a dispute between the plaintiff, who had suffered a collision with the defendant's van, and the defendant. The plaintiff sought to challenge the findings of the trial judge regarding the severity of a head injury sustained in the accident and its alleged causal link to his subsequent serious mental illness, diagnosed as schizophrenia or schizoaffective disorder. The appeal was heard by Sulan, Vanstone, and Peek JJ.

The central legal issues before the appellate court were whether the trial judge erred in finding that the plaintiff suffered a mild to moderate head injury, and consequently, whether this injury caused or precipitated the onset of his serious mental illness. The plaintiff contended that the trial judge's findings were not supported by the evidence presented.

The court considered extensive medical evidence from various specialists, including psychiatrists, a neuropsychologist, and a psychologist, who provided opinions on the plaintiff's condition and the potential impact of the head injury. The trial judge had found a mild to moderate head injury, a finding the plaintiff challenged. The court noted the inconsistencies in the evidence regarding the plaintiff's consciousness immediately following the accident, including the defendant's account of a brief period of unconsciousness and the ambulance officer's report indicating no loss of consciousness. The court also considered the Glasgow Coma Scale scores recorded, acknowledging their limitations and the imprecision of the assessment process, particularly in light of potential medication and the subjective nature of the scoring. The appellate judges were required to determine if the trial judge's factual findings were demonstrably against the weight of the evidence.