Additional Study Information: This study aims to understand if Camp Kidpower, a training using either structured games or child-led play, lowers anxiety in 4.0 to 5.99-year-old children. The training will be delivered over 5 sessions to small groups of children at the New York State Psychiatric Institute. Before and after camp, parents will participate in clinical assessments about their child (remote), and children will get an EEG (electroencephalogram; a non-invasive way to look at brain activity)and perform other activities to assess behavior (in-person). Your family will receive compensation up to $275 for participating in this study.