other evidence on adjudication pursuant to Welfare and Institutions Code section 602.
Penal Code section 26, subdivision One provides that children under the age of 14 years are incapable of committing a crime “in the absence of clear proof that at the time of committing the act charged against them, they knew its wrongfulness.” This requirement applies as well to juvenile court proceedings under section 602 of the Welfare and Institutions Code charging the minor with having committed a crime. (In re Gladys R. (1970) 1 Cal.3d 855 [83 Cal.Rptr. 671, 464 P.2d 127].)
“Only if the age, experience, knowledge, and conduct of the child demonstrate by clear proof that he has violated a criminal law should he be declared a ward of the court under section 602.” (In re Gladys R. supra, 1 Cal.3d at p. 867.) To prohibit evidence as to the child’s conduct on the occasion in question would often result in omission of the only truly relevant evidence on the subject. In the present case, for example, we would be left with evidence that the minor, 13 years of age, is a bright boy whose mother told him it was wrong to hurt people and that in her opinion the minor knows that it is wrong to shoot another person—hardly the “clear proof’ required by Penal Code section 26, subdivision One. Turning to evidence of the minor’s conduct on the occasion in question, however, and the two days preceding, there are numerous circumstances which in our opinion were relevant to show that the minor knew the wrongfulness of his act at the time it was committed and collectively satisfy the “clear proof’ requirement of section 26, subdivision One.
It should be noted also that the minor himself presented psychiatric testimony on the issue, to the effect that the minor was a victim of transient psychosis at the time of the killing and unaware that his act was wrongful. The doctor’s opinion included a consideration of the circumstances surrounding the event, without which such evaluation would be of little or no value. The judge as fact finder rejected the evidence, as he had a right to do. (Pen. Code, § 1127b.) Certainly, however, the apparently intentional killing of his stepfather by a 13-year-old boy is so abhorrent and abnormal that psychiatric evaluation would be essential, and that would necessarily include consideration of and testimony concerning the minor’s conduct at the time of the crime charged.
Although most of the above facts were proved by witnesses other than the minor, his declarations can also be considered for the purpose. (In re Tanya L. (1977) 76 Cal.App.3d 725 [143 Cal.Rptr. 31].) The case of In re