Day-to-day spontaneous social behaviours is quantitatively and qualitatively affected in a 16p11.2 deletion mouse model.

"Conflict of interest The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The author(s) declared that they were an editorial board member of Frontiers, at the time of submission. This had no impact on the peer review process and the final decision."

"The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This work was supported by the National Centre for Scientific Research (CNRS), the French National Institute of Health and Medical Research (INSERM), the University of Strasbourg (Unistra), the French government funds through the “Agence Nationale de la Recherche” in the framework of the Investissements d’Avenir Program [ANR-10-INBS-07 PHENOMIN to YH] and Investissements d’Avenir labeled IdEx Unistra [ANR-10-IDEX-0002 to YH], a SFRI-STRAT’US project [ANR 20-SFRI-0012 to YH], EUR IMCBio [ANR-17-EURE-0023 to YH], STRAS&ND [to EE and YH], INBS PHENOMIN [ANR-10-INBS-07 PHENOMIN to YH]. The funders had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript."