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The goal of this study is to experimentally test whether baby items can promote healthy infant development.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Baby Bouncer Group | Other | Participants in the group will be receiving a baby bouncer for use from infant's birth up to 8 months after birth. |
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| Baby Bouncer Group with Infant T-Shirt with LENA | Other | A subsample of the participants in the baby bouncer group will also receive infant t-shirts with wearable audio recorders. |
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| Baby Carrier Group | Other | Participants in the group will be receiving a baby carrier for use from infant's birth up to 8 months after birth. |
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| Baby Carrier Group with Infant T-Shirt with LENA | Other | A subsample of the participants in the baby carrier group will also receive infant t-shirts with wearable audio recorders. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Baby Bouncer | Other | Fischer Price baby bouncer. |
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| Measure | Description | Time Frame |
|---|---|---|
| Cognitive skill as assessed via eye tracking | Cognitive skill is reported as the percentage of accuracy of eye gaze as evaluated via the eye tracking procedure. | 8 months |
| Parental Engagement | Mother and infant will engage in a 15-minute unstructured free playtime. This engagement will be videotaped and assessed by the Investigator. Parental engagement is reported as the percentage of parental sensitivity and synchrony scored on a 0-100% scale with the higher score indicating increased sensitivity and synchrony. | 8 months |
| Infant Reactivity (Crying) assessed by the Face to Face/Still Face Procedure | Infant emotions and social engagement is reported as the time noted when the infant was crying during the 6 minute Face to Face/Still Face Procedure. | 8 months |
| Infant Reactivity (Smiling) assessed by the Face to Face/Still Face Procedure | Infant emotions and social engagement is reported as the time noted when the infant was smiling during the 6 minute Face to Face/Still Face Procedure. | 8 months |
| Oxytocin levels | Mother and infant oxytocin levels will be measured via saliva sample. | 8 months |
| Percentage of infant and adult vocalizations time | Assessed via 2-8 hours audio recordings on LENA. | Up to 8 hours |
| Percentage of infant and adult turn taking |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Elizabeth Simpson, Ph.D. | University of Miami | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Miami | Miami | Florida | 33146 | United States |
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| Infant t-shirts with Language Environment Analysis (LENA) audio recorders | Other | Infant t-shirts with wearable LENA audio recorders for 2-8 hours of recordings of vocal interaction, crying and turn-taking. |
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| Baby Carrier | Other | Ergobaby Baby carrier. |
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Assessed via 2-8 hours audio recordings on LENA. Turn taking is defined as the verbal exchange by adult and infant. |
| Up to 8 hours |
| Percentage of Infant crying time | Percentage of infant crying time will be assessed via 2-8 hours audio recordings on LENA. | Up to 8 hours |