Table 1.

Child Participant Characteristics.

Child Name (Dyad #)	Age in Months	Sex	Race	Alternative Diagnosis	Focus Behaviors
Jax (dyad 1)	21	M	White	Developmental Delay	1, 2, 3, 4, 5
Maude (dyad 2)	33	F	White	Developmental Delay	4, 5, 7
Daisy (dyad 3)	30	F	White	Hydrocephalus Epilepsy Hearing Impairment Developmental Delay Motor Impairment (Clubfoot)	2, 5, 8
Lucia (dyad 4)	35	F	Hispanic/Latinx	Developmental Delay	1, 6
Derek (dyad 5)	35	M	Indigenous North America/Alaskan Native	None	1, 2, 3, 4, 5
Allie (dyad 6)	31	F	Hispanic/Latinx	Developmental Delay	1, 3, 4, 5, 9

Note: Focus behaviors were from the RBS-EC pre-intervention measure completed by the parent. Although each child had target behaviors to inform their level of higher-order RRBI, the measurement for all children was more broadly categorized as inflexible and flexible behaviors. Focus behaviors: 1: upset if interrupted; 2: inflexible routine; 3: limited and intense interests; 4: fixation with parts of objects; 5: sensory seeking behaviors; 6: lines up or arranges toys and other objects; 7: narrow pre-occupation or repetitive interest with one type of toy, 8: attachment to object, 9: mouthing and carrying objects [60].