Study aim: Determining the effectiveness of art therapy with a painting approach on emotional regulation, hopelessness, loneliness, and shyness in divorced children Design: This study is a randomized, double-blind, parallel-group clinical trial conducted in Phase 2 on 30 children of divorce (15 in each group). The sample allocation is done by simple randomization using the RAND function in Excel software; first, each participant receives an identification code and is divided into two groups of 15 based on a random number. Settings and conduct: This research will use a field experimental research method and an extensive pre-test and post-test design. The research will be conducted in the city of Izeh. All participants, clinical caregivers, and evaluators who interpret the data will be kept confidential and all information will be kept anonymous. Participants/Inclusion and exclusion criteria: Inclusion Criteria Be between 7 and 12 years old Be children of divorce. The children and their parents must consent to participate in the research. Exclusion Criteria Having a physical illness that interferes with the treatment process. Use of psychiatric medications. Intervention groups: Intervention group: Art therapy intervention with a painting approach based on the therapeutic protocol of Shelani et al. (2017) is implemented in a group setting in 8 45-minute sessions, one session per week. Control group: Do not receive any intervention. Main outcome variables: Emotional regulation; hopelessness; loneliness; shyness.