Kelley2015.RdData from a randomized control trial with embedded repeated acquisition single- case experimental design evaluating vocabulary knowledge using an expressive definition task. The variables are as follows:
condition. Indicates whether control or treatment group.
observation. Identifier for participant
unit. Classroom unit.
Pre. Pre-intervention score on the expressive definition task.
Post. Post-intervention score on the expressive definition task.
A data frame with 54 rows and 5 variables
Kelley, E. S., Goldstein, H., Spencer, T., & Sherman, A. (2015). Effects of automated Tier 2 storybook intervention on vocabulary and comprehension learning in preschool children with limited oral language skills. Early Childhood Research Quarterly, 31, 47-61. doi:10.1016/j.ecresq.2014.12.004