Table 2.

REAL constructs being examined in the Watch Me Grow for REAL study and the associated measures.

REAL Construct	Measures
Attention	Modified attention disengagement task; Infant dot-probe task; Joint attention task; Social orienting to socio-emotional stimuli and non-emotional stimuli; Still-Face paradigm: behavioral coding; Behavioral inhibition; Free play: behavioral coding.
Responsiveness	Joint attention task; Eye-tracking tasks: pupil dilation Still-Face Paradigm: Electro-dermal activity (EDA), child heart rate coded from facial skin color; and behavioral coding; Behavioral inhibition: EDA, child heart rate coded from facial skin color; and behavioral coding; Free play: EDA, child heart rate coded from facial skin color; and behavioral coding.
Learning	Evaluative conditioning task; Behavioral inhibition.