Perceived Parenting Styles Fail to Mediate Between Anxiety and Attachment Styles in Adult Siblings of Individuals with Developmental Disabilities.

Researchers asked 100 adult brothers and sisters of people with developmental disabilities to fill out three surveys. The surveys measured how they see Mom and Dad’s style, how they handle close relationships, and how much anxiety they feel. The team then ran stats to see if parenting style explains why attachment anxiety leads to personal anxiety.

For these siblings, attachment anxiety still predicted their own anxiety no matter how they rated their parents. In other words, feeling “I worry my loved ones will leave me” mattered; “Mom was strict” or “Dad was warm” did not. A control group without DD brothers or sisters showed the usual link where parenting style does matter.

Lee et al. (2022) later saw the same broken pathway in autistic adults themselves, adding “psychological inflexibility” as another dead-end route. Marsack et al. (2017) had earlier shown the opposite in preschoolers with DD: positive parenting did buffer later emotion problems. The difference is age and outcome—little kids vs grown-ups, tantrums vs anxiety.

Galuska et al. (2006) found no adjustment gaps between child siblings of kids with Down syndrome and typical peers. That looks like a clash, but they measured broad kid adjustment while P et al. looked at adult attachment-anxiety, so both can be true.

If you coach adults who grew up with a brother or sister with DD, don’t assume fixing “parenting wounds” will ease their anxiety. Target adult attachment skills—like checking catastrophic thoughts when a friend cancels plans—instead of replaying childhood blame. A quick values-clarification exercise or ACT-based defusion drill may go further than rehashing Mom’s rules.