Laski: Example 2 from Hedges, Pustejovsky, & Shadish (2013)

LaskiR Documentation

Example 2 from Hedges, Pustejovsky, & Shadish (2013)


Data from a multiple baseline design conducted by Laski, Charlop, & Schreibman (1988). The variables are as follows:

  • case. Child identifier.

  • outcome. Frequency of child vocalization, as measured by a partial interval recording procedure with 60 ten-second intervals per session.

  • time. Measurement occasion.

  • treatment. Indicator for treatment phase.


A data frame with 128 rows and 4 variables


Laski, K. E., Charlop, M. H., & Schreibman, L. (1988). Training parents to use the natural language paradigm to increase their autistic children's speech. Journal of Applied Behavior Analysis, 21(4), 391-400. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1901/jaba.1988.21-391")}


Hedges, L. V., Pustejovsky, J. E., & Shadish, W. R. (2013). A standardized mean difference effect size for multiple baseline designs across individuals. Research Synthesis Methods, 4(4), 324-341. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1002/jrsm.1086")}

scdhlm documentation built on March 31, 2023, 10:55 p.m.