A manual line taught two generations of workers that attachment collapse “only counts” in early childhood. After that line, the same behaviors were recoded as opposition, attention, mood, autism-adjacent rigidity, or “teen drama.”
The child did not become a different species at the fifth birthday. The file did.
The hypothesis can be said in one paragraph. Among children already past early childhood, the timing of maltreatment and of primary-caregiver disruption is not a background detail. It is a variable associated with the severity of attachment difficulty as reported by the caregiving adult. A rupture that lands after safety has been built — after age five, after placement, after the child has finally used someone — is not automatically milder because the calendar says the sensitive period has closed.
In the core sample, children whose maltreatment and/or caregiver disruptions occurred after age five showed more substantial attachment-difficulty scores than children whose comparable events occurred by or before age five. Later harm still moves severity. The file does not close.
It does not ask the field to invent a new diagnosis. It asks the field to stop treating timing as a footnote and severity as a mood. It is not a DSM specifier. It is not a slogan. It is a working method with a 2016 dissertation core, a 2017 published summary, and two later volumes that refuse to close the file at the gate.
Not this
It is not a claim that early harm is trivial.
Early rupture remains foundational. The hypothesis does not compete with infant attachment science. It refuses the inference that science is used to justify: that after five, attachment work is cosmetic.
Not this
It is not a new name for RAD.
Reactive attachment disorder and disinhibited social engagement disorder — ICD-10 F94.1 and F94.2 — have criteria, floors, and limits. The hypothesis does not replace those criteria. It names what the criteria leave on the table after the cutoff: severity that keeps moving, and caregivers who keep writing the code.
Not this
It is not a verdict on a child.
Predisposition may be discussed as vulnerability. It may not be discussed as destiny, folklore genetics, or an excuse to stop timing the next rupture.
Not this
It is not a license to treat an instrument as a finding it was not built to produce.
The 2017 published summary used the Attachment Disorder Assessment Scale–Revised (ADAS-R) as a caregiver-report measure of attachment-difficulty severity. Other instruments used outside their design produce numbers, not findings. SSI-MR is not a normed test. Do not treat it as one.