Skip to contents

Contour plot of the joint distribution of suspect signal and max filler signal.

Usage

plot_msdt_joint(
  dprime,
  gamma,
  lineup_size,
  lineup_type = c("culprit_present", "culprit_absent"),
  n = 120,
  xlim = NULL,
  ylim = NULL,
  show_decision = TRUE
)

Arguments

dprime

Discriminability between guilty and innocent suspects.

gamma

Decision criterion.

lineup_size

Lineup size (suspect + fillers), must be >= 2.

lineup_type

Either "culprit_present" or "culprit_absent".

n

Grid resolution per axis.

xlim, ylim

Optional numeric ranges for axes.

show_decision

Logical. If TRUE, overlays MAX rule boundaries.

Value

A ggplot object.

Examples

# Joint distribution for a culprit-present 6-person lineup
plot_msdt_joint(dprime = 1.5, gamma = 0.8, lineup_size = 6)