Charles Wayne Jackson, Appellant v. the State of Texas, Appellee

Summary

The Court affirmed the conviction for voluntary manslaughter, holding that a preliminary competency hearing may be reviewed on appeal from the trial on its merits, that amnesia alone does not render a defendant incompetent, that a psychiatrist may not testify about intent based on hearsay, and that the challenged pistol and confession evidence were harmless errors. Justice Davis also overruled prior Texas cases limiting appellate review of competency findings.