Table 1.

Eligibility criteria

Inclusion criteria

Exclusion criteria

• Age: 8–17 (participants, who consent as 17-year-olds but turn 18 during the course of the study, will be eligible to complete all procedures) • IQ: all participants will have IQ-scores > 70 as assessed by the WASI • Language: all participants will be fluent in English • Any current anxiety diagnosis for patient group only

• Any serious medical condition or condition that interferes with fMRI scanning • Pregnancy • Current use of any psychoactive substance • Current suicidal ideation • Current diagnosis of ADHD of sufficient severity to require pharmacotherapy, Tourette’s Disorder, OCD, PTSD, conduct disorder, major depressive disorder • Past or current history of mania, psychosis, or severe pervasive developmental disorder

Abbreviations: ADHD attention-deficit hyperactivity disorder, IQ intelligence quotient; OCD obsessive compulsive disorder, PTSD post-traumatic stress disorder, WASI Wechsler Abbreviated Scale of Intelligence