There is an extensive research on this particular topic, Psychologists have come up with some tips to make the process easier and peaceful so the child. First of all the interview has to be conducted in a child friendly environment, its advised to choose a child friendly location. moreover as Ilvaciraku here said, different props are provided and pictures are shown to the kids so that they can tell the incident like a story without getting overwhelmed. In family disputes the children are brought to the interview site with someone other than parents, like a support person from school or any organization, to reduce the risk of pre interview contamination.
The most reliable information is obtained when a continuum of questions are utilized that permit the child to give an account that is minimally affected by external factors.
Letting the child narrate the situation like he's telling a story for example
@ilvaciraku Thanks for this information!
Forensic psychologists used psychological evaluation techniques and conduct series of cognitive interviews to determine child abuse.
@ayesha naymat Thanks for this.