What is the test for a jury to convict a defendant of a premeditated murder?

neither reweigh the evidence nor reevaluate the credibility of witnesses. [Citation.] We presume in support of the judgment the existence of every fact the jury reasonably could deduce from the evidence. [Citation.] If the circumstances reasonably justify the findings made by the trier of fact, reversal of the judgment is not warranted simply because the circumstances might also reasonably be reconciled with a contrary finding." (People v. Jennings (2010) 50 Cal.4th 616, 638-639.)

" ' "Generally, there are three categories of evidence that are sufficient to sustain a premeditated and deliberate murder: evidence of planning, motive, and method. [Citations.] When evidence of all three categories is not present, 'we require either very strong evidence of planning, or some evidence of motive in conjunction with planning or a deliberate manner of killing.' [Citation.] But these categories of evidence, borrowed from [Anderson], 'are descriptive, not normative.' [Citation.] They are simply an 'aid [for] reviewing courts in assessing whether the evidence is supportive of an inference that the killing was the result of preexisting reflection and weighing of considerations rather than mere unconsidered or rash impulse.' " ' " (People v. Prince (2007) 40 Cal.4th 1179, 1253.)

" 'Deliberation' refers to careful weighing of considerations in forming a course of action; 'premeditation' means thought over in advance. [Citations.] 'The process of premeditation and deliberation does not require any extended period of time. "The true test is not the duration of time as much as it is the extent of the reflection. Thoughts may follow each other with great rapidity and cold, calculated judgment may be arrived at quickly." ' " (People v. Koontz (2002) 27 Cal.4th 1041, 1080.)

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