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Article History

Received: 25 January 2026

Accepted: 3 February 2026

First Online: 6 February 2026

Change Date: 20 March 2026

Change Type: Update

Change Details: The affiliation of the author Rosario Spencer has been updated.

Declarations

:

: The project was submitted and approved by the Ethics Committee of the San Sebastián University (CEC N°69 − 25). During all stages of the project, the ethical norms established by the National Agency for Research and Development of Chile (ANID) and the American Psychological Association will be followed. Participants will be duly informed about the terms of their participation and that of their children in this study. Their authorization for the registration and use of the information will be requested by reading and signing a letter of informed consent. All data are treated pseudonymously. Based on experiences with 25 previous VIPP-SD trials suggesting absent adverse side-effects [ ] participation in this study does not entail any risk for the families. Sampling hair for cortisol measurements is considered non-invasive, as the amount of hair needed is similar to what is usually lost for natural reasons. Participants will be able to withdraw from the study if they wish to do so, without any harm to themselves. In the event of detecting problematic interactions that may affect the well-being of individuals at any time during the study, clear and expeditious protocols for referral to psychological care centers available at the institution will be guaranteed. The data collected will be kept in a secure and confidential location. Only the research team and the assistants will have access to the data, which will be used for research purposes only. Once the data of the intervention have been collected, the same intervention will be offered to the control group.

: Not applicable.

: The authors declare no competing interests.