IntroductionThe aim of the study is to analyze the acceptability of an Integrative and Multidimensional Case Formulation Model implemented as an educational strategy in the first year of a child and adolescent psychiatry residency by a clinical supervisor within a one-way mirror room. Materials and methodsA qualitative methodology is used through content analysis of interviews conducted with residents of the program who had participated consecutively in clinical supervision between 2018 and 2021. For the analysis, 5 theoretical constructs derived from the Theory of Planned Behavior and Fazio's MODE Model are used: attitudes, subjective norm, perceived behavioral control, motivation and opportunity. ResultsTwenty-six thematic codes that influence acceptability emerged from the analysis: 8 attitudinal codes (e.g. acceptability is favored by the usefulness of the Model to gain theoretical insight of the cases but with a high amount of time required); 4 normative codes (e.g. the approval or disapproval of the model by scholars outside the clinical supervision); 7 perceived behavioral control codes (e.g. the perceived self-efficacy increases over time); 4 motivational codes (e.g. the desire to learn) and 3 opportunity codes (e.g. joint deliberation with peers). ConclusionThe results show valuable information for the development of educational strategies in the specialty residency program by approaching significant cognitive and affective factors which influence learning during the training periods. Aspects of the strategy that stand out as favoring the educational process are identified, along with other aspects that can be improved for better acceptability of the educational strategy.