A case study of childhood disintegrative disorder using systematic analysis of family home movies.
Home-movie coding gives an objective timeline that proves the rapid, across-the-board regression seen in childhood disintegrative disorder.
01Research in Context
What this study did
The team asked one family to share every home movie they had of their son.
They coded each clip for talking, playing, and social skills.
The boy had later been diagnosed with childhood disintegrative disorder (CDD).
What they found
Movies up to age 48 months showed typical speech and play.
over the study period every skill dropped fast.
The sharp loss matched the rare CDD pattern, not slow autism regression.
How this fits with other research
Greenlee et al. (2024) and Jabbar et al. (2026) also let computers score child videos.
They track movement or hand-flaps instead of human coding, but the goal is the same: turn home footage into hard numbers.
Noterdaeme et al. (2002) warn that parent interviews alone can miss the timing of loss.
The movies in Ruben’s case gave an exact month when skills vanished, backing the need for both parent talk and video proof.
Why it matters
If you assess a child with sudden severe loss, ask for home videos.
One coded timeline can separate CDD from autism with regression.
No extra clinic time is needed; families usually have clips on their phones.
Use the date stamp to show insurers why intense hours are justified.
Want CEUs on This Topic?
The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.
Join Free →Ask the next family who reports ‘he lost everything in a month’ to bring phone videos from that period; code five-minute clips for language, play, and eye contact to see if loss lines up with CDD criteria.
02At a glance
03Original abstract
Childhood disintegrative disorder (CDD) is a rare pervasive developmental disorder that involves regression after a period of at least 2 years of typical development. This case study presents data from family home movies, coded by reliable raters using an objective coding system, to examine the trajectory of development in one child with a reported regression at 48 months of age. Coding substantiated parent reports of mostly typical early development, followed by later catastrophic loss of skills across many developmental domains. Differential diagnosis of CDD and autism with regression is discussed.
Journal of autism and developmental disorders, 2008 · doi:10.1007/s10803-008-0579-1