Johanne Lemieux is a social worker (for 42 years) and psychotherapist (for 25 years) specializing in international adoption, as well as in the treatment of attachment disorders and post-traumatic stress disorder (EMDR for adults and children). She is also a lecturer, author, and trainer in Quebec and French-speaking Europe, creator of the © Adopteparentalité and Attachment Intervention approach, author of several works, and a consultant for various expert contracts for the MSSS, as well as for visual and radio productions in Quebec, and for governmental and non-profit organizations in Europe. She is regularly featured in print media, on radio, in documentaries, and on television. She is also an adoptive mother (one national and two international) of three now-adult children.

In September 2019, she was honored to be appointed by the President of France, Mr. Emmanuel Macron, as one of 15 expert members, alongside neuropsychiatrist Boris Cyrulnik, on the Commission of the First 1000 Days of the Child.

Ms. Lemieux practiced her profession at the Youth Protection Directorate, in schools, and, until 2001, in a CLSC (Local Community Service Centre) in the Quebec City region, when she created and opened her private consultation office. Following her involvement in the social services network, Ms. Lemieux has dedicated the last twenty-five years of her career to research, study, the creation of psychosocial intervention tools, and especially to the dissemination of psychosocial knowledge on attachment in the context of international, national, or foster adoption, and then in attachment intervention in Quebec, Canada, and French-speaking Europe.

She is the co-author with pediatrician Dr. Jean-François Chicoine and Patricia Germain of the bestseller L'enfant adopté dans le monde en quinze chapitres et demi (The Adopted Child in the World in Fifteen and a Half Chapters), published in 2003.

She continues the publication of her Adopteparentalité collection with her publisher Québec Amérique. The three volumes are now bestsellers and have become mandatory reading by numerous governmental bodies in Quebec and French-speaking Europe for all applicants for adoption or foster care.