Only-Child Status and Ease Stability in Young Adults: A Double-Blind Methodological Study

Release note This paper presents a limited, double-blind methodological study testing whether loss of access to ease can occur despite low-control childhood conditions. The design deliberately avoids evaluative measures and relies on spontaneous reporting only. This note constrains competing developmental accounts without extending the underlying theoretical framework. A constrained empirical note testing whether early access loss can arise from a discrete structural shift rather than cumulative monitoring.