Table 2 Study outcomes and measures
Outcomes | Measures | Method | Baseline assessment (T1) | Intervention | Post-assessment (T2) | First follow-up (T3) | Second follow-up (T4) |
|---|---|---|---|---|---|---|---|
Primary outcomes | |||||||
Child language | Receptive | Eye tracking: preferential looking task | x | x | x | ||
Eye racking: pupil dilation task | x | x | |||||
EEG: N400 | x | x | |||||
Parent report: CDI | x | x | x | x | |||
Expressive | Parent report: CDI | x | x | x | x | ||
Child socio-cognition (joint attention) | Initiating joint attention | Observation: ESCS | x | x | x | ||
Responding to joint attention | Observation: ESCS | x | x | x | |||
Secondary outcomes | |||||||
Child executive function | Parent report: EEFQ | x | x | x | x | ||
Simple inhibition | Observation: “prohibition task” | x | |||||
Inhibitory control | Tablet task: ECITT | x | |||||
Working memory | Observation: “hide and seek task” | x | |||||
Shifting | Observation: reversed categorization | x | |||||
Parental behavior | Sensitivity and reciprocity | Observation: BSSI | x | x | |||
Cognitive scaffolding | Observation: BSSI | x | x | ||||
Cognitive scaffolding | Observation: “problem solving task” | x | x | ||||
Moderators | |||||||
Parental socio-economic status | Parental level of education | Parent report | x | ||||
Home literacy environment | Reading habits | Parent report | x | x | x | x | |
Parental intervention compliance | Attendance record, intervention dose (amount of practice), intervention experience | Facilitator/parent report | x | ||||