What is the test for establishing that a judgment or order of a lower court is correct?

In conducting our appellate review, we presume that a judgment or order of a lower court is correct. The general rule is that "[a]ll intendments and presumptions are indulged to support [the judgment] on matters as to which the record is silent, and error must be affirmatively shown." (Denham v. Superior Court (1970) 2 Cal.3d 557, 564; In re Marriage of Arceneaux (1990) 51 Cal.3d 1130, 1133.)