TYPE Original Research PUBLISHED 13 October 2022 DOI 10.3389/fpsyg.2022.998658 OPEN ACCESS EDITED BY Fco. Pablo Holgado-Tello, National University of Distance Education (UNED), Spain REVIEWED BY Miguel Pic, South Ural State University, Russia José Ángel Martínez-Huertas, Universidad Nacional de Educación a Distancia, Spain *CORRESPONDENCE Eulàlia Arias-Pujol eulaliaap@blanquerna.url.edu SPECIALTY SECTION This article was submitted to Quantitative Psychology and Measurement, a section of the journal Frontiers in Psychology RECEIVED 20 July 2022 ACCEPTED 30 August 2022 PUBLISHED 13 October 2022 CITATION Arias-Pujol E, Mestres M, Miralbell J, Bachs N and Anguera MT (2022) Implementation and evaluation in low intensity intervention programs from the CONNECT perspective of mixed methods: Application in a case of an autistic child. Front. Psychol. 13:998658. doi: 10.3389/fpsyg.2022.998658 COPYRIGHT © 2022 Arias-Pujol, Mestres, Miralbell, Bachs and Anguera. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. Implementation and evaluation in low intensity intervention programs from the CONNECT perspective of mixed methods: Application in a case of an autistic child Eulàlia Arias-Pujol 1 *, Marina Mestres 2 , Júlia Miralbell 2,3 , Natalia Bachs 1 and M. Teresa Anguera 3 1 Faculty of Psychology, Education and Sports Sciences Blanquerna, Ramon Llull University, Barcelona, Spain, 2 Carrilet Research and Education Center, Barcelona, Spain, 3 Faculty of Psychology, Institute of Neurosciences, University of Barcelona, Barcelona, Spain There has been a comprehensive development over the last few years of low intensity intervention programs that are implemented within a user context and that are made up of everyday life activities, and it has been necessary to adapt the necessary methodological channels in order to guarantee an adequate resolution pathway. The mixed method perspective offers a suitable framework, and observational methodology – in itself considered mixed method – is appropriate for studying the implementation and evaluation of low intensity intervention programs, allowing the development of the QUAL- QUAN-QUAL stages that correspond to the connect integration pathway of mixed methods. In this work it was applied to a single case, in a low intensity intervention, retrieving valuable information obtained, but systematizing it and applying quantitizing to the qualitative data that was treated quantitatively in a rigorous manner. The aim was to analyze the psychotherapist-patient interaction in psychoanalytic psychotherapy, in which we sought to identify which of the therapist’s techniques stimulated actions of reciprocal social interaction in the child, and which techniques inhibited non reciprocal social interactions. The observational design was nomothetic, follow-up, and multidimensional. The patient was a 4-year-old boy with a diagnosis of severe autism spectrum disorder. We used an ad hoc observation instrument combining a field format and a category system. Interobserver agreement was analyzed quantitatively by Cohen’s kappa using the free QSEQ5 software program. Polar coordinate analysis was carried out using the free program HOISAN 2.0. Polar coordinate analysis allows us to obtain an inter-relational map of the connections detected between focal behavior established in each case and the different categories. The results provide objective evidence – backed up by the application of polar-coordinate-based data analysis – that within a framework of psychoanalytic psychotherapy, the techniques Frontiers in Psychology 01 frontiersin.org