Promoting Early Language Development Through Parent-child Book Reading in Costa Rica

"The intervention is a package including five children's books and information on how to practice interactive book reading. Information includes 36 audiovisual products delivered via text messaging over a 12-week period. Products include:~1. An introductory video about interactive book reading, along with a written list of recommendations on how to practice interactive book reading.~2. Two videos of child development experts explaining the benefits of interactive reading.~3. Thirty written text messages strengthening content provided in the videos.~4. Three audio messages guiding the progress of the intervention.~Based on Abraham and Michie's (2008) taxonomy of behavior change techniques, one audiovisual product prompts specific goal settings, 13 provide instruction, one provides information on consequences, 10 prompt practice, three use follow-up prompts, one prompts self-monitoring of behavior, one models or demonstrates the behavior and six prompt barrier identification."