Biomarkers Study in Infants With Prior Neonatal Brain Injury

A behavioral measure used with infants to assess attentional control and processing. Infants are presented with visual puppet stimuli four distinct "looks", and researchers record looking time, shifts in attention, or habituation patterns. More sustained attention in the early looks followed by habituation to the stimuli in the later looks often indicates better early attentional capacity. Total accumulated looking time to a stimulus in visual preference-type tasks commonly ranges from roughly 15-30+ seconds per trial, depending on the infant's age and the stimulus.

The A-not-B task is a developmental measure of object permanence, working memory, and inhibitory control in infants, requiring them to search for a hidden object after its location is changed. Performance is typically reported as the percentage of correct searches on B trials, with infants 8-9 months averaging 20-40% correct (range 0-100%), 10-11 months averaging 50-70%, and 12-month-olds reaching 75-90%, often near the maximum. Scores vary with delay length and task difficulty.

EEG data will be utilized to examine whether neural activity patterns are associated with later executive functioning outcomes. Specific EEG indices will be analyzed as predictors of executive functioning, with lower/higher executive functioning defined by performance on behavioral measures.

In the Reilly Role Overload questionnaire, parents of child participants rate the frequency of feeling overwhelmed by role demands; item responses are summed to create a total role overload score. Total scores range from 13 to 65, with higher scores indicating greater perceived role overload due to excessive demands relative to time and energy.

Parents and/or Caregivers rate items describing household noise, crowding, and routine; responses are summed to create a total CHAOS score. The CHAOS total score ranges from 15 to 60, with higher scores indicating a more chaotic, noisy, and disorganized home environment; scores below 25 typically reflect lower chaos, whereas scores above 35 suggest high household chaos.

A parent-report measure assessing the frequency and intensity of everyday parenting stressors (e.g., child demands, disruptions to routines); item ratings are summed or averaged to yield frequency and intensity scores. On the PDH Scale, intensity scores range from 0 to 100 with higher totals indicating more frequent and/or more stressful everyday parenting hassles.

A parent-report measure assessing the frequency and intensity of everyday parenting stressors (e.g., child demands, disruptions to routines); item ratings are summed or averaged to yield frequency and intensity scores. On the PDH Scale, frequency scores range from 0 to 80 with higher totals indicating more frequent and/or more stressful everyday parenting hassles.

A questionnaire which measures stress and satisfaction associated with parenting; items are summed to create a total parental stress score. On the Parental Stress Scale, total scores range from 18 to 90, with higher scores indicating greater levels of parental stress and lower scores reflecting lower stress and more satisfaction in the parenting role.

A questionnaire is given to parents that assesses what executive functions children are exhibiting. More functions exhibited means further along in executive function development. The (EEFQ uses parent ratings on a 7-point scale for 31 items, with subscale and composite scores averaging between 1 and 7 - higher scores indicate stronger emerging executive function behaviors in infants and toddlers

The Bayley is a cognitive and motor assessment conducted by an interventionalist to assess a child's development in these domains. The highest possible score on a subtest or subdomain is 19, and the lowest score is 1. Scores from 8-12 are considered average.