View source for Standard of Appellate Review

{{fr|Norme_de_contrôle_en_appel}}
{{Currency2|May|2021}}
{{LevelZero}}{{HeaderAppeals}}
==General Principles==
The "standard of review" represents the "margin or tolerance" of "deviation" in the judge's findings.<ref>
{{CanLIIRP|Skinner|gs6zb|2016 NSCA 54 (CanLII)|NSJ No 255}}{{perNSCA-H|Saunders JA}}{{AtL|gs6zb|17}}("The phrase “standard of review” is simply a label used to explain the margin or tolerance for deviation allowed during appellate review, depending upon the category of issue or question challenged on appeal.  It is a convenient way to describe the view-finder, the lens, through which we, as appellate judges examine the error alleged to have occurred in the court below.")
</ref>

A court of appeal should never set aside a conviction merely on the basis of a different view of the evidence. It is not the duty of the appellate court to re-try the case.<ref>
{{CanLIIR|Andres|g7h7n|1979 CanLII 2238 (SK CA)|[1982] 2 WWR 249}}{{perSKCA|Culliton CJ}} at 251 ("The Court of Appeal cannot and should not set aside a conviction merely because it would have taken a different view of the evidence than did the trial judge.  The Court of Appeal must remember that it is neither its duty nor its function to re-try cases — its function is one of review.")
</ref>

; Meaning of Deference on Review
The concept of deference by an appellate court is "aimed at recognizing and upholding the division of labour (adjudicative authority) as between first instance and appellate ... courts."<ref>
{{CanLIIRP|Sauverwald|jbcs7|2020 ABCA 388 (CanLII)|AJ No 1170}}{{TheCourtABCA}}{{atL|jbcs7|13}} ("Deference is a system-functional concept aimed at recognizing and upholding the division of labour (adjudicative authority) as between first instance and appellate or review courts. Deference relates to fact finding and to exercises of discretion. By comparison, the rule of law requires the appeal court to make a de novo evaluation of whether the flaws in the trial process did in actuality occasion an unfair trial and consequently a miscarriage of justice regardless of innocent intentions: ...")
</ref>

; Categories
All reviewable decisions made by a judge can be seen as answering one of three categories of questions:<ref>
{{CanLIIRPC|Housen v Nikolaisen|51tl|2002 SCC 33 (CanLII)|[2002] 2 SCR 235}}{{perSCC|Iacobucci and Major JJ}}{{AtsL|51tl|8|, 10 to 12}}, {{atsL-np|51tl|26|, 31, 39}}, {{atsL-np|51tl|72|}}, and {{atsL-np|51tl|101|}}</ref>
# questions of law: what is the correct legal test to be applied
# questions of fact: what took place between the parties
# questions of mixed law and fact: whether the facts satisfy the correct legal tests<ref>
see also {{CanLIIRPC|Saint-Jean v Mercier|51vg|2002 SCC 15 (CanLII)|[2002] 1 SCR 491}}{{perSCC|Gothier J}}</ref>

; Questions of law and questions of fact
All questions of law are to be reviewed on a standard of "correctness."<ref>
{{supra1|Housen v Nikolaisen}}{{atL|51tl|8}}<br>
{{CanLIIRP|Mooney|1lbdb|2005 NLCA 49 (CanLII)|66 WCB (2d) 296}}{{perNLCA|Rowe JA}}{{atL|1lbdb|18}}<br>
</ref>

A question of law inquire into the "correct legal test" to be applied for a particular legal issue or the "the application of a legal standard" to facts.<ref>
{{CanLIIRPC|Pushpanathan v Canada (Minister of Citizenship and Immigration)|1fqs6|1998 CanLII 778 (SCC)|[1998] 1 SCR 982}}{{perSCC-H|Bastarache J}}{{atL|1fqs6|37}}<br>
{{CanLIIRPC|Saint-Jean v Mercier|51vg|2002 SCC 15 (CanLII)|[2002] 1 SCR 491}}{{perSCC|Gothier J}}{{atL|51vg|33}}<br>
{{CanLIIRP|Araujo|5231|2000 SCC 65 (CanLII)|[2000] 2 SCR 992}}{{perSCC|LeBel J}}{{atL|5231|18}}<br>
{{supra1|Shepherd}}<br> 
{{CanLIIRP|Brooks|527q|2000 SCC 11 (CanLII)|[2000] 1 SCR 237}}{{perSCC-H|Bastarache J}}<br>
</ref>
This also includes the interpretation of a legal standard<ref>
{{CanLIIRP|Ewanchuk|1fqpm|1999 CanLII 711 (SCC)|[1999] 1 SCR 330}}{{perSCC-H|Major J}}{{atL|1fqpm|21}}</ref> and the application of a standard to settled facts.<ref>
{{CanLIIRP|Mara|1fr12|1997 CanLII 363 (SCC)|[1997] 2 SCR 630}}{{perSCC-H|Sopinka J}}{{atsL|1fr12|18| to 19}}
</ref> 
However, where the facts are in dispute, it is most likely a question of mixed fact and law.<ref>
{{CanLIIRP|Grouse|1hx78|2004 NSCA 108 (CanLII)|189 CCC (3d) 357}}{{perNSCA|Cromwell JA}}{{atL|1hx78|44}}</ref>

; Questions of fact
All questions of fact are reviewed on a standard of "palpable and overriding error".

All findings of facts are questions of fact.<ref>
{{CanLIIRP|Shepherd|24kx6|2009 SCC 35 (CanLII)|[2009] 2 SCR 527}}{{perSCC-H|McLachlin CJ and Charron J}}</ref>

The standard of "palpable and overriding error have been broken down into two components. "Palpable" means that the error is obvious. The logic must be obviously flawed. This would include findings of fact without any evidence or logical errors.<Ref>
{{CanLIIRPC|Benheim v St. Germain|gvk2h|2016 SCC 48 (CanLII)|[2016] 2 SCR 352}}{{perSCC|Wagner J}}{{atL|gvk2h|38}}
</ref>
"Overriding" means that the error "affects the outcome of the case". That is to say, but for one or more palpable errors, the outcome would have been different.<Ref>
{{ibid1|Benheim}}
</ref>

; Questions of mixed fact and law
Where the question is neither purely a question of law or question of fact, then it is considered a question of "questions of mixed law and fact".

; Exercises of Discretion
The appellate court owes deference to exercises of discretion. However, where the exercise is unreasonable, then no deference is required.<ref>
{{CanLIIRP|Haaretz.com v Goldhar|hsd2n|2018 SCC 28 (CanLII)|[2018] 2 SCR 3}}{{perSCC|Côté J}}{{atL|hsd2n|49}}<Br>
{{CanLIIRP|Victoria|hv666|2018 ONCA 69 (CanLII)|359 CCC (3d) 179}}{{TheCourtONCA}}{{atL|hv666|81}}<br>
{{CanLIIRP|Imola|j184j|2019 ONCA 556 (CanLII)|439 CRR (2d) 352}}{{TheCourtONCA}}{{atL|j184j|17}} ("We are of the view that the trial judge erred in declining to hear the application. Trial judges have considerable discretion to manage the cases before them and an appellate court will not lightly interfere with that discretion. However, deference is not owed to unreasonable exercises of discretion")<Br>
</ref>

{{reflist|2}}

==Questions of Law==
* [[Appeal of an Error of Law]]

==Questions of Fact==
Findings of fact are given deference on appeal.<ref>
{{CanLIIRx|D'Onofrio|fwfwf|2013 ONCA 145 (CanLII)}}{{TheCourtONCA}}{{atL|fwfwf|1}}<br>
{{CanLIIRx|Yi|1qvpt|2007 ONCA 185 (CanLII)}}{{TheCourtONCA}}{{atL|1qvpt|1}}<br>
{{CanLIIRx|JF|gvtp3|2016 ONCA 900 (CanLII)}}{{TheCourtONCA}}{{atL|gvtp3|7}}<br>
{{CanLIIRP|Goulet|fmfnb|2011 ABCA 230 (CanLII)|277 CCC (3d) 557}}{{perABCA|Slatter JA}}{{AtL|fmfnb|7}} ("The sentencing judge’s findings of fact are entitled to deference.")<Br>
{{CanLIIRP|Skinner|gs6zb|2016 NSCA 54 (CanLII)|NSJ No 255}}{{perNSCA|Saunders JA}}{{AtL|gs6zb|23}}("...a judge’s decisions on questions of fact are not evaluated on a standard of correctness.  A high degree of deference is accorded.  Even though opinions may differ with regards to particular factual rulings, they will not likely be disturbed because the margin or tolerance for deviation is wide enough to accommodate other outcomes which are reasonable and find support in the evidence.  Recalling my analogy, striking the outer rings on the target will suffice and appellate intervention will not be warranted.")
</ref>
The court of appeal should not substitute their own view of the evidence with the findings of facts of the trial judge.<ref>
{{CanLIIRP|Magagna|1bz2d|2003 CanLII 655 (ON CA)|173 CCC (3d) 188}}{{TheCourtONCA}}{{atL|1bz2d|12}}
</ref>
Findings of fact, whether adjudicative, social, or legislative are reviewed on a standard of "palpable and overriding error."<ref>
{{CanLIIRP|Canfield|jb956|2020 ABCA 383 (CanLII)|395 CCC (3d) 483}}{{TheCourtABCA}}{{atL|jb956|14}}<Br>
{{CanLIIRPC|Canada (Attorney General) v Bedford|g2f56|2013 SCC 72 (CanLII)|[2013] 3 SCR 1101}}{{perSCC-H|McLachlin CJ}}{{atL|g2f56|56}}
</ref>

Where a palpable and overriding error has been found, the judge may intervene with its view of the evidence as well as draw inferences based on that evidence.<ref>
{{CanLIIRPC|L(H) v Canada (Attorney General)|1k864|2005 SCC 25 (CanLII)|[2005] 1 SCR 401}}{{perSCC-H|Fish J}}</ref>

The following have been found to be questions of fact and so reviewable on the palpable and overriding error:
* findings of fact<ref>
{{CanLIIRP|Biccum|fqhdj|2012 ABCA 80 (CanLII)|286 CCC (3d) 536}}{{TheCourtABCA}}{{atL|fqhdj|10}}<br>
{{CanLIIRP|Fan|gxrk4|2017 BCCA 99 (CanLII)|352 CCC (3d) 280}}{{perBCCA|Dickson JA}}{{atL|gxrk4|47}}<Br>
{{CanLIIRP|Caron|2fnq2|2011 BCCA 56 (CanLII)|269 CCC (3d) 15}}{{perBCCA|Frankel JA}}{{atL|2fnq2|26}}<br> 
{{CanLIIRP|Clark|1jmfj|2005 SCC 2 (CanLII)|[2005] 1 SCR 6}}{{perSCC-H|Fish J}}{{atL|1jmfj|9}}<br>
</ref>, including:
** findings of fact relating to Charter breaches<ref>
{{CanLIIRP|Schmidt|fm8bm|2011 ABCA 216 (CanLII)|527 WAC 265}}{{TheCourtABCA}}{{AtL|fm8bm|14}}<br>
</ref>
* Findings of credibility<ref>
{{CanLIIRP|Brooks|527q|2000 SCC 11 (CanLII)|[2000] 1 SCR 237}}{{perSCC-H|Bastarache J}}</ref>
* whether an inference can be drawn from established facts<ref>
{{CanLIIRP|Thomas|1ttvl|1952 CanLII 7 (SCC)|[1952] 2 SCR 344}}{{perSCC|Cartwright J}}<br>
{{supra1|Clark}}{{atL|1jmfj|9}}<br>
{{CanLIIRP|Morin|1fs8t|1992 CanLII 40 (SCC)|[1992] 3 SCR 286}}{{perSCC-H|Sopinka J}}{{atp|297}} ("a different theory of the facts and the inferences that could be drawn from those facts" are not a question of law)<br>
</ref>
* whether an officer had an honest subjective belief in the existence of a ground<ref>
{{{supra1|Biccum}}{{atL|fqhdj|10}}</ref>
* assessing the weight given to an item of evidence or evidence as a whole in determining whether it meets the standard of proof<ref>
{{CanLIIRP|Powell|27xmw|2010 ONCA 105 (CanLII)|251 CCC (3d) 475}}{{perONCA|Juransz JA}}{{atL|27xmw|40}}<br>
{{CanLIIRP|AA|gkd9q|2015 ONCA 558 (CanLII)|327 CCC (3d) 377}}{{perONCA-H|Watt JA}}{{atL|gkd9q|65}}<br>
</ref>

A judge's assessment of evidence, such as whether a judge can rely on a document for the truth of its contents, is reviewed on a standard of palpable and overriding error that the finding of fact played an essential part in the reasoning.<ref>
{{CanLIIRP|Lohrer|1jx8r|2004 SCC 80 (CanLII)|[2004] 3 SCR 732}}{{perSCC-H|Binnie J}}{{atL|1jx8r|1}}<br> 
{{CanLIIRP|Lee|27scf|2010 ABCA 1 (CanLII)|251 CCC (3d) 346}}{{TheCourtABCA}} (2:1){{atL|27scf|8}}<br>
{{CanLIIRP|O'Neil|frg82|2012 ABCA 162 (CanLII)|545 WAC 351}}{{TheCourtABCA}}<br>
</ref>

Reviewing inferences drawn from facts it is not sufficient that a different inference can be drawn from the facts.<ref>
{{CanLIIRPC|HL v Canada (Attorney General)|1k864|2005 SCC 25 (CanLII)|[2005] 1 SCR 401}}{{perSCC-H|Fish J}}{{atL|1k864|74}}<br>
</ref>

{{Reflist|2}}
===Reviewing Findings of Credibility===
{{seealso|Analyzing Testimony}}
Matters of credibility are given considerable deference. <ref>
{{CanLIIRP|Gagnon|1n54q|2006 SCC 17 (CanLII)|[2006] 1 SCR 621}}{{perSCC-H|Bastarache and Abella JJ}}{{atL|1n54q|20}} (... “It is very difficult for a trial judge to articulate with precision the complex intermingling of impressions that emerge after watching and listening to witnesses and attempting to reconcile the various versions of events. That is why this court decided..., that in the absence of a palpable and overriding error by the trial judge, his or her perceptions should be respected.”)
</ref>
The trial judge has a "significant advantage" of being able to see and hear the evidence.<ref>
see {{CanLIIRP|W(R)|1fsbj|1992 CanLII 56 (SCC)|[1992] 2 SCR 122}}{{perSCC-H|McLachlin J}}{{atp|131}}<br>
{{supra1|Gagnon}}<br>
{{CanLIIRP|Ceal|fpn0l|2012 BCCA 19 (CanLII)|315 BCAC 138}}{{perBCCA|D Smith JA}}{{AtL|fpn0l|24}}<br>
{{CanLIIRP|François|1frqm|1994 CanLII 52 (SCC)|[1994] 2 SCR 827}}{{perSCC-H|McLachlin J}}<br>
{{CanLIIRP|Horton|23253|1999 BCCA 150 (CanLII)|133 CCC (3d) 340}}{{perBCCA|Esson JA}}<br> 
{{CanLIIRP|McLean|2bd3r|2010 BCCA 341 (CanLII)|290 BCAC 75}}{{perBCCA|Ryan JA}}{{atL|2bd3r|51}}<Br>
{{CanLIIRx|Ramos|jbtj6|2020 MBCA 111 (CanLII)}}{{perMBCA|Mainella JA}}{{atL|jbtj6|74}}
</ref> 
It is assessed not just of “what was said, but how it was said.”<ref>
{{CanLIIRP|Howe|1jkc6|2005 CanLII 253 (ON CA)|192 CCC (3d) 480}}{{perONCA-H|Doherty JA}}{{atL|1jkc6|46}}
</ref>

Unless there is a "palpable and overriding error" in the findings of fact by the judge in assessing credibility, the findings should not be overturned.<ref>
{{ibid1|Ceal}}{{atL|fpn0l|25}}<br>
{{CanLIIRx|Jacobs|ggfk7|2015 BCCA 83 (CanLII)}}{{perBCCA|Neilson JA}}{{AtL|ggfk7|44}}<br>
{{supra1|Gagnon}}{{atL|1n54q|20}}<br>
</ref>

Sufficiency of reasons in determining credibility are also accorded deference.<ref>
see {{CanLIIRP|Dinardo|1wtt2|2008 SCC 24 (CanLII)|[2008] 1 SCR}}{{perSCC|Charron J}}{{atL|1wtt2|26}}
</ref>

{{Reflist|2}}

==Question of Mixed Fact and Law==

A question that is of mixed fact and law will be considered on a standard of "palpable and overriding error."<ref>
{{CanLIIRPC|Housen v Nikolaisen|51tl|2002 SCC 33 (CanLII)|[2002] 2 SCR 235}}{{perSCC|Iacobucci and Major JJ}}{{atsL|51tl|8| to 37}}<br>
</ref>

Where the judge has considered all evidence required by law and comes to the wrong conclusion. This will be an error of mixed fact and law.<ref>
{{CanLIIRPC|Hunter v Southam|1mgc1|1984 CanLII 33 (SCC)|[1984] 2 SCR 145}}{{perSCC|Dickson J}}{{AtsL|1mgc1|41| to 45}}<Br>
</ref>

However, where the issue may appear to be of mixed fact and law but relates to a failure to consider one or more factual findings, such error will normally be treated as a question of fact and not a mixed question.<ref>
{{supra1|Southam}}{{atL|1mgc1|39}}
</ref>

Where the question involves "the application of a legal standard to a set of facts", then it is a mixed question of fact and law.<ref>
{{supra1|Housen v Nikolaisen}}{{atL|51tl|27}}<br>
contra: {{CanLIIRP|Goulet|fmfnb|2011 ABCA 230 (CanLII)|277 CCC (3d) 557}}{{perABCA|Slatter JA}}{{atL|fmfnb|7}} ("While the sentencing judge’s factual findings are entitled to deference, the application of a legal standard to the facts of the case is a question of law")
</ref>

The following have also been considered questions of "mixed fact and law":
* A defence appeal of conviction to [[Guilty Plea|withdraw a guilty plea]]<ref>
{{CanLIIRP|Miller|flps0|2011 NBCA 52 (CanLII)|965 APR 302}}{{perNBCA|Richard JA}}{{atL|flps0|6}}</ref>
* [[Voluntariness]] of a statement<ref>
{{CanLIIRP|Petri|5fc5|2003 MBCA 1 (CanLII)|171 CCC (3d) 553}}{{perMBCA|Kroft JA}}{{atL|5fc5|35}}
</ref>

{{reflist|2}}

==See Also==
* [[Grounds of Appeal from Sentence#Standard of Review]]