This PhD aims to investigate the intergenerational effects of trauma in three generations and the implications on the wellbeing of left-behind children in the skipped-generation migrant households in Cambodia. The sample of the study consists of three generations; generation 1 (G1)-grandmother: 128, generation 2 (G2)-mother: 41, and generation 3 (G3)-children in older cohort: 39 (aged 15-22) and younger cohort: 82 (aged 5-9). The data files of this PhD contents data on trauma symptoms of caregivers and children, parenting styles, overall psychological adjustment (anxiety and depression), and physical well-being (nutritional status).