J.S. v. State, 292 P.3d 709

J.S., an eleven-year-old, appeals an adjudication that he intentionally damaged property at school.
The juvenile court found J.S. broke a toilet flushing mechanism valve by jumping on it.
J.S. argued he cannot form the required intent because he is under fourteen under Utah law.
J.S. urged cognitive-development theory (Piaget) to show lack of intent, but the court did not admit or rely on it.
The court rejected a bright-line age limit, requiring case-specific assessment of intent.
The appellate court affirms the adjudication, holding evidence supports intentional damage and no error occurred in excluding Piaget theory.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Is J.S. capable of forming the required intent due to age?	J.S. argues under-14 cannot form the intent for destruction of property.	State contends intent can be shown by conduct and is not defeated by age alone.	No reversible error; intent can be inferred and J.S. admitted breaking it.
Whether Piaget cognitive-development theory was properly excluded as evidence?	Piaget theory suggests under-twelve lack appreciation of consequences.	Theory was not properly admitted or argued; not ruled on below.	Exclusion affirmed; evidence not considered for intent ruling.
Did the evidence establish intentional damage by J.S. beyond a reasonable doubt?	J.S. admitted he jumped on the valve and broke it, showing intent.	No specific evidence shows inability to form intent or a lack of intent.	Yes; admission and conduct show intentional damage.

State v. Hamilton, 70 P.3d 111 (2003 UT 22) (intent can be inferred; review for correctness on legal standards)
Huish v. Munro, 191 P.3d 1242 (2008 UT App 283) (standard of review for intent in juvenile cases)
Kumho Tire Co. v. Carmichael, 526 U.S. 137 (1999) (Daubert factors on admissibility of scientific testimony)
State v. Kihistrom, 988 P.2d 949 (1999 UT App 289) (intent can be proven by circumstantial evidence)
State v. Holgate, 10 P.3d 346 (2000 UT 74) (explicitly discusses proving intent)