Bootstrapped Effective Size (Tredoux, 1998)

Base function for generating bootstrapped Effective Size (Tredoux, 1998)

Usage

esize_T_boot(lineup_tab, d)

Arguments

lineup_tab

A vector of individual lineup choices. The historical argument name is retained for compatibility.

d

Indices for bootstrap resampling

Details

This is the statistic function passed to boot::boot() for bootstrapping Tredoux's E'. The data argument must contain individual lineup choices; d resamples mock witnesses rather than count-table cells. For a higher-level interface that accepts raw lineup vectors, see esize_boot_dist. Percentile and BCa intervals from this plug-in statistic cannot be used to test exact fairness E'=k; see the boundary warning in esize_boot_dist.

References

Davison, A.C. & Hinkley, D.V. (1997). Bootstrap methods and their application. Cambridge University Press.

Malpass, R. S. (1981). Effective size and defendant bias in eyewitness identification lineups. Law and Human Behavior, 5(4), 299-309.

Malpass, R. S., Tredoux, C., & McQuiston-Surrett, D. (2007). Lineup construction and lineup fairness. In R. Lindsay, D. F. Ross, J. D. Read, & M. P. Toglia (Eds.), Handbook of Eyewitness Psychology, Vol. 2: Memory for people (pp. 155-178). Mahwah, NJ: Lawrence Erlbaum Associates.

Tredoux, C. G. (1998). Statistical inference on measures of lineup fairness. Law and Human Behavior, 22(2), 217-237.

Tredoux, C. (1999). Statistical considerations when determining measures of lineup size and lineup bias. Applied Cognitive Psychology, 13, S9-S26.

Wells, G. L., Leippe, M. R., & Ostrom, T. M. (1979). Guidelines for empirically assessing the fairness of a lineup. Law and Human Behavior, 3(4), 285-293.

See also

boot: https://cran.r-project.org/web/packages/boot/boot.pdf

Examples

# Choices from 50 mock witnesses to a 6-member lineup
set.seed(1)
lineup_tab <- sample(1:6, 50, replace = TRUE)
# E' for the observed data
esize_T_boot(lineup_tab, seq_along(lineup_tab))
#> [1] 5.681818