State v. Ericson, 566 P.3d 468

Kirk A. Ericson was convicted in Idaho for forcible penetration by use of a foreign object upon J.D., a massage therapy client who had a traumatic brain injury from a prior accident.
Ericson, not licensed as a massage therapist in Idaho, claimed the sexual contact was consensual; J.D. testified she was unable to consent due to having 'frozen' (tonic immobility) during the incident.
Doctor King testified that J.D.'s symptoms during the assault were consistent with tonic immobility, an involuntary biological response to trauma that affects the ability to respond or consent.
Ericson argued both that the State failed to prove J.D. was of 'unsound mind' (incapable of consent) and that the trial court erred by excluding testimony about J.D.'s prior memory issues.
Ericson sought to introduce testimony from a nurse practitioner who saw J.D. almost ten months before the incident for anxiety and memory complaints; the trial judge excluded this as irrelevant and cumulative.
The court affirmed Ericson's conviction, finding sufficient evidence for incapacity to consent and no abuse of discretion in excluding the contested memory testimony.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Sufficiency of the evidence for incapacity	Evidence showed J.D. could not consent due to tonic immobility	No proof J.D. was of unsound mind; tonic immobility is temporary, not a qualifying defect	Evidence sufficient; tonic immobility can render one temporarily of unsound mind
Exclusion of testimony on J.D.'s memory issues	Memory testimony irrelevant/cumulative/confusing	Memory issues relevant to credibility and account of incident	Exclusion proper; testimony was cumulative, irrelevant, and risked confusion

State v. Herrera-Brito, 131 Idaho 383 (Ct. App. 1998) (sets standard for appellate review of criminal conviction sufficiency)
State v. Knutson, 121 Idaho 101 (Ct. App. 1991) (reinforces deference to jury credibility assessments)
State v. Decker, 108 Idaho 683 (Ct. App. 1985) (court won't substitute judgment for jury as to evidence weight)
State v. Smith, 117 Idaho 225 (1990) (broad trial court discretion over admissibility of testimonial evidence)
State v. Garcia, 166 Idaho 661 (2020) (relevance and admissibility of evidence in criminal cases)
State v. Enno, 119 Idaho 392 (1991) (abuse of discretion standard for evidentiary rulings)
State v. Clark, 115 Idaho 1056 (Ct. App. 1989) (I.R.E. 403 balancing for excluding evidence)