What is the test for ineffective assistance of counsel?

To establish ineffective assistance of counsel, a defendant must demonstrate that his counsel's performance was deficient and that defendant suffered prejudice as a result. (People v. Ledesma (1987) 43 Cal.3d 171, 216-217.) Counsel's performance was deficient if his or her representation " 'fell below an objective standard of reasonableness . . . under prevailing professional norms.' " (Id. at p. 216.) To show prejudice, defendant must show a reasonable probability that he would have received a more favorable result had counsel's performance not been deficient. (Id. at pp. 217-218.) " 'A reasonable

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probability is a probability sufficient to undermine confidence in the outcome.' " (Id. at p. 218.)