Fit an explicit visual-context/testlet IRT model

Usage

fit_visual_context_irt(
  response_matrix,
  registry,
  context = NULL,
  itemtype = "2PL",
  model_dimension = "Ability",
  context_dimension = "VisualContextFactor",
  SE = FALSE
)

Arguments

response_matrix: Person x item response matrix.
registry: `visual_context_registry()` object.
context: Optional context identifier to model; defaults to the first shared context.
itemtype: mirt item type.
model_dimension: Name for the primary latent dimension.
context_dimension: Name for the context/testlet dimension.
SE: Request standard errors from mirt.

Value

An object of class "eye_visual_context_irt", stored as a named list, with components "base_model", "context_model", "comparison", "registry", "context", "positions", "itemtype", "model_string", "status", "caveat". It contains an explicit visual-context/testlet IRT model and associated metadata or diagnostics needed to interpret the result.