The BYI-II is a self-report measure which assess the child’s perceptions of depression, anxiety, anger, disruptive behavior, and self-concept. The Beck Depression Inventory (BDI), Anxiety Inventory (BAI), Anger Inventory (BANI), Disruptive Behavior Inventory (BDBI), and Self-concept Inventory (BSCI), each contains 20 statements, and the child is responding to the questionnaire to indicate the extent to which they think that a sentence characterizes them. They answer on a four-point Likert-scale (0 = never, 1 = sometimes, 2 = often and 3 = always). The five inventories are scored by adding up the 20 ratings. Each inventory can be used separately. The BYI-II can be filled out by children 7 years or older (26 ). The BYI-II is validated with Danish samples and shows acceptable internal consistency and test-retest reliability (27 (link)). Internal consistencies for the scales were good to excellent (BDI α = .95, BAI α = .92, BANI α = .94, BDBI α = .89, BSCI α = 88.) (27 (link)).