Does Block Play Improve Language Acquisition: A Randomized Trial

This study has been completed.
Information provided by:
University of Washington Identifier:
First received: January 26, 2007
Last updated: September 25, 2008
Last verified: September 2008

This is a randomized controlled trial of distributing blocks to children ages 1.5 -2.5 years of age to see if language acquisition improves.

Condition Intervention
Device: Building Blocks

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Single Blind
Official Title: Clinical Trial of Building Block Distribution in Children

Resource links provided by NLM:

Further study details as provided by University of Washington:

Primary Outcome Measures:
  • Macarthur Bates Language Inventory

Secondary Outcome Measures:
  • TV viewing
  • Block play

Estimated Enrollment: 200
Study Start Date: September 2005
Study Completion Date: September 2006
Primary Completion Date: September 2006 (Final data collection date for primary outcome measure)
Detailed Description:

Children in age group are randomized to get two sets of blocks or not. Outcomes include language development assessed using the Macarthur Bates CDI 6 months after enrollment.


Ages Eligible for Study:   18 Months to 30 Months
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • healthy children

Exclusion Criteria:

  • developmental delay, non-English
  Contacts and Locations
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Please refer to this study by its identifier: NCT00428376

Sponsors and Collaborators
University of Washington
Principal Investigator: Dimitri Christakis, MD MPH University of Washington
  More Information

No publications provided

Responsible Party: Dmitri Christakis, MD, MPH, University of Washington Identifier: NCT00428376     History of Changes
Other Study ID Numbers: 05-0636-01
Study First Received: January 26, 2007
Last Updated: September 25, 2008
Health Authority: United States: Institutional Review Board processed this record on October 02, 2015