lineup_prop_vec {r4lineups}

Lineup proportion

Description

Computes the proportion of mock witnesses identifying a particular lineup member

Usage

lineup_prop_vec(lineup_vec, target_pos, k)

Arguments

lineup_vec

A numeric vector of lineup choices

target_pos

Suspect/lineup member position. Must be declared by user (scalar).

k

Nominal size (i.e., total number of members in lineup). Must be specified by user (scalar).

Value

Returns a proportion indicating the frequency with which a target was identified in a lineup

References

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.

Examples

#Data:
lineup_vec <- round(runif(100, 1, 6))

#Call:
lineup_prop_vec(lineup_vec, 3, 6)