VL2 Data Sharing Project

Early Education Longitudinal Study

The Early Education Longitudinal Study was a three year longitudinal study during which children, ages 3-5 in the initial year were followed and assessed each year on a variety of language, cognitive and literacy outcomes.

Study Meta-data


The Early Education Longitudinal Study (EELS) tracks children, who were ages 3-5 in the initial year of the study, for a period of three years, resulting in a cross-sequential longitudinal data base.  The Focus of the study was to follow the development of literacy skills among young children from a variety of home and communication backgrounds.  The study was modeled after the Pre-Elementary Education Longitudinal Study (PEELS) conducted by the National Center for Special Education Research.  Like PEELS, EELS consisted of direct assessments of the participants language, reading, and intellectual development over the time of the study, as well as comprehensive data on family background and home literacy practices, indirect assessments using behavioral checklists.

Principal Investigator and Co-Investigators

Thomas E. Allen, Ph.D., PI, Donna Morere, Ph.D., DIane Clark, Ph.D., Co-investigators
Email Contact thomas.allen@gallaudet.edu
Dates of Data Collection
  • Wave 1, data collected between May 2010 and May 2011
  • Wave 2, data collected between May 2011 and May 2012
  • Wave 3, data collected between May 2012 and May 2013
Participant, Sample Characteristics See the technical paper, EELS Rationale, Methods, and Sample Characteristics
Data sharing Availability Currently, Wave 1 Family Background is sharable
These links provide access to PDF versions of study tools.
Data file codebooks
Data sharing proposal forms and agreements  
Links to data sharing proposal and data sharing agreement forms