Add versions of each condition — replicate

Repeat each row of a design n times. I use this when I want several materials per condition, following Porter and Velez (2022). Averaging over several stimuli makes the result less dependent on one choice of wording.

Usage

replicate_design(design, n = 3)

Arguments

design: A tibble from design_conditions.
n: Number of replicates per condition (default: 3).

Value

The expanded design with a replicate column.

References

Porter, E., & Velez, Y. R. (2022). Placebo selection in survey experiments: An agnostic approach. Political Analysis, 30(4), 481-494.

Examples

d <- design_conditions(frame = c("economic", "moral"))
#> ℹ Design: 2 conditions from 1 factor
replicate_design(d, n = 3)
#> # A tibble: 6 × 3
#>   condition_id frame    replicate
#>          <int> <chr>        <int>
#> 1            1 economic         1
#> 2            1 economic         2
#> 3            1 economic         3
#> 4            2 moral            1
#> 5            2 moral            2
#> 6            2 moral            3