Baby Dvd Effects on Cortisol

Study Overview
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Brief Summary
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The investigators will do an experiment where 9-12 month old infants are randomized to 30 minutes of block play or 30 minutes of watching a baby DVD.

Official Title
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A Randomized Controlled Trial of Block Play vs Dvd Viewing

Conditions
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Infant Development

Intervention / Treatment
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* Behavioral: block play
* Behavioral: baby dvd


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 9-12 months of age

Ages Eligible for Study
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Minimum Age: 9 Months
Maximum Age: 12 Months

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: block play<br>30 minutes of block play with parent | Behavioral: block play<br>* 30 minutes of block play<br>|
| Experimental: baby dvd<br>watch baby dvd with parent | Behavioral: baby dvd<br>* 30 minutes of dvd viewing<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| salivary cortisol | Study will be assessing babies' neuroendocrine responses to play vs TV viewing. Salivary cortisol, as an indicator of neuroendocrine response, will be measured over time with the intervals as specified under time frame. For each time point, investigator will adjust for prior ones in a repeated measures analysis. | Baseline | 
| salivary cortisol | Study will be assessing babies' neuroendocrine responses to play vs TV viewing. Salivary cortisol, as an indicator of neuroendocrine response, will be measured over time with the intervals as specified under time frame. For each time point, investigator will adjust for prior ones in a repeated measures analysis | 10 minutes post baseline | 
| salivary cortisol | Study will be assessing babies' neuroendocrine responses to play vs TV viewing. Salivary cortisol, as an indicator of neuroendocrine response, will be measured over time with the intervals as specified under time frame. For each time point, investigator will adjust for prior ones in a repeated measures analysis | 20 minutes post baseline | 
| salivary cortisol | Study will be assessing babies' neuroendocrine responses to play vs TV viewing. Salivary cortisol, as an indicator of neuroendocrine response, will be measured over time with the intervals as specified under time frame. For each time point, investigator will adjust for prior ones in a repeated measures analysis | 30 minutes post baseline | 
| salivary cortisol | Study will be assessing babies' neuroendocrine responses to play vs TV viewing. Salivary cortisol, as an indicator of neuroendocrine response, will be measured over time with the intervals as specified under time frame. For each time point, investigator will adjust for prior ones in a repeated measures analysis | 40 minutes post baseline | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Salivary cortisol measured after DVD watching or block play