What is the test for reviewable questions of fact and assessment of credibility?

Canada (Federal), Canada

The following excerpt is from Villa Ramirez v. Canada (Citizenship and Immigration), 2011 FC 227 (CanLII):

It is settled law that questions of fact and assessment of credibility are reviewable on a reasonableness standard. Reasonableness is concerned mostly with the existence of justification, transparency, and intelligibility within the decision-making process. But it is also concerned with whether the decision falls within a range of possible, acceptable outcomes which are defensible in respect of the facts and law (Dunsmuir v. New Brunswick, 2008 SCC 9, [2008] 1 S.C.R. 190, at para. 47).

Other Questions


Is the adjudicator’s assessment of credibility based on a flawed approach to assessing credibility? (British Columbia, Canada)
What is the test for credibility in a motor vehicle adjudicator's assessment of credibility? (British Columbia, Canada)
What factors must be considered when assessing credibility in a credibility assessment? (British Columbia, Canada)
What is the impact of a review officer’s assessment of credibility in assessing credibility? (British Columbia, Canada)
What is the test for credibility in a trial judge’s assessment of credibility? (Newfoundland and Labrador, Canada)
What is the test for credibility in a motor vehicle adjudicator's assessment of credibility? (British Columbia, Canada)
What principles govern the assessment of credibility of a witness? (British Columbia, Canada)
Does an immigration officer’s veiled credibility finding contribute to a reviewable error? (Canada (Federal), Canada)
What is the impact of the assessment of credibility? (British Columbia, Canada)
Can a self-represented applicant amend the Assessment Questions? (British Columbia, Canada)