Thank you.
My name is Dr. Thomas Brown. I'm a senior researcher and director of the addiction research program at the Research Centre of the Douglas Mental Health University Institute in Montreal; assistant professor in the Department of Psychiatry, McGill University; and a licensed clinical psychologist in the province of Quebec. I'm also a mental health specialist designated by the U.S. Consulate to Canada to assess non-U.S.-citizen visa applicants who are suspected of suffering from substance use disorder related to harmful behaviour, mostly impaired driving. My expert opinion is sought as part of the U.S. visa waiver program, and I have provided it hundreds of times. I am honoured to be provided an opportunity to participate in this session.
Mr. Chair, I would like to express my opinion on two issues with respect to my understanding of the amendments to Bill C-226. The first issue is a general one and relates to value of increasing severity of punishments following a conviction. The severity of punishment to a conviction sends an important message and may on its own deter some individuals from this criminal behaviour. At the same time, my understanding of the available evidence is that the deterrent effects of sanctioned severity are achieved when they are coupled with certainty and celerity in the enforcement of relevant laws. This is also observed in other forensic contexts.
Clinically, while I observe that sanctions in many cases do hurt and appear dissuasive for many offenders, they are frequently seen as unjustified and prosecutory by many other offenders who I and other authorities would consider the most at risk for recidivism and therefore the ones we should be most worried about.
One aspect of this response is that these drivers have probably driven many times, if not by some estimates hundreds of times, without being arrested or suffering mishap. This personal experience is a powerful narrative that distorts their risk assessment when deciding to take the wheel of a car, especially after drinking excessively. They often say, “I can do it”, “I have done it plenty of times in the past”, “I'm only four blocks away from home”, etc. Indeed, it competes quite successfully, especially in a significantly impaired state, with any deterrent effect from the remote possibility of an arrest and other severe negative consequences, including injury.
Our research, as well as that of others, runs in the same direction as these clinical observations. Changing this narrative for offenders requires something more, and measures that facilitate and enhance the use of highly visible enforcement measures, and in particular the addition of checkpoints and random roadside testing, will go a long way in making severe sanctioning more persuasive for primary prevention as well as prevention of recidivism.
My second issue, Mr. Chair, relates to the provisions regarding blood alcohol concentration as a benchmark for an aggravating condition for sentencing purposes. The meaning of BAC in impaired driving is surprisingly controversial. Excessive alcohol use is a necessary precondition for impaired driving, though the actual BAC level for per se conviction is very arbitrary. BAC is an established marker of crash risk, which rises exponentially as BAC increases. Increased risk for injury from all causes starts much lower however, at .02, and, by the time it reaches .05 or .08, it is already several-fold greater than zero BAC. Hence, it is a good marker for impairment and crash risk and is pragmatic as well.
At the same time, the available scientific literature suggests that arrest BAC has not been proven to be a particularly reliable predictor of recidivism risk. Therefore, this confuses me as to its justification as part of a deterrent strategy and possibly triggering more severe sanctions. What does this provision seek to accomplish? Most impaired drivers do not intend to break the law or harm others, but they still must take responsibility for their criminally negligent behaviour.
We have set our criminal per se threshold at .08%, and the law is the law. We have selected the current per se limit for many reasons, but in terms of riskiness and the degree to which it impairs judgment, .08% is already significant. For most Canadians, it represents an excessive amount of alcohol intake. In my opinion, this amendment seems to be saying that being arrested at a BAC of .08% is bad, but a BAC of .12% is worse, even if a crash had not occurred in either case.
We have set a reasonable, some would argue excessively liberal, per se limit for impaired driving. Why would we want to diminish or confuse the significance of our current benchmark by adding another higher benchmark?
Another facet of this concern relates to the utility of an arrest due to BAC. As noted above, an arrest has not proven to be a particularly reliable predictor of recidivism. I also have never heard an impaired driver report to me that being impaired at over .08% was not enough, and that they were motivated to be even at a higher BAC level when driving.
More typically, they drink excessively, frequently to the point of being over the per se limit while having access to a vehicle, and the proclivity to drive it. To what extend they drink over the per se BAC limit involves factors other than greater negligence or more disregard for the safety of others. Indeed, most individuals do not and cannot drink that much.
Impaired drivers frequently report that they felt fit to drive just before an arrest, which we and other researchers hypothesize is a signal for disordered drinking. Moreover, highly elevated BACs suggests the capacity for drinking a lot of alcohol, which again flags the possibility of tolerance, which is also a signal for disordered drinking. In other words, the ability to appraise the level of impairment, which is already difficult for most people, frequently appears even weaker in impaired drivers, and they are also more likely to suffer from bona fide alcohol use disorder.
From this perspective, an arrest due to BAC is likely a more useful indicator of disordered drinking and alcohol use disorder than risk for more impaired driving. Both are characterized clinically by poor control over drinking.
Raising sanctions in the case of a highly elevated BAC risks punishing individuals who are more likely to have a problem that, in many cases, would meet thresholds for alcohol use disorder. In these cases, punishment is an inappropriate deterrent or preventative measure.
In many jurisdictions, an arrest due to BAC is used for remedial and therapeutic decision-making during re-licensing. I consider this to be the more appropriate method to intervene in disordered drinking indicated by elevated BAC, namely as a public health strategy rather than a legal strategy for deterrence or punishment.
Thank you.