RTÉ Investigates has learned that a psychologist used bogus qualifications to get a job with the Health Service Executive.
Caroline Goldsmith carried out diagnostic assessments on children in 2012 before concerns were raised.
All of the children had to be reassessed.
Ms Goldsmith got the contract to assess these children by sending a recruitment agency a CV which claimed that she had a degree, a masters, and a PhD.
On that basis, the recruitment agency placed her in a role with the HSE.
RTÉ Investigates has established that these were not real qualifications.
Caroline Goldsmith continued to use these and other fake qualifications to work in the private sector, including when she gave evidence in a 2014 family law case on whether a mother should be reunited with her child.
Almost a decade later, she has acquired two legitimate masters qualifications in psychology, and continues to work in the private sector, diagnosing and treating both adults and children.
However, officials in the HSE are in disagreement over whether or not her assessment reports should be accepted.
These revelations feature as part of an RTÉ Investigates documentary on Ireland's Unregulated Psychologists.
Psychology services in Ireland are not regulated.
CORU, the regulator for health and social care professionals, was tasked with regulating a range of professions in 2007.
They have made some progress, however psychologists remain unregulated.
The title of psychologist is not protected, meaning that anybody can call themselves a psychologist.
Watch RTÉ Investigates: Ireland's Unregulated Psychologists on the RTÉ Player.
