This dataset is associated with the following objects:
response_dep a data.frame containing raw response data of 747 participants and 49 variables.
prosettaid participant IDs.
EDDEP04 -- CESD20 response to items.
itemmap_dep a data.frame containing the item map, describing the items in each instrument.
item_order item numeric IDs. This column refers to the column item_order in anchor item parameters.
instrument the instrument ID that each item belongs to.
item_id item ID strings. This column refers to column names in raw response data, excluding the participant ID column.
item_name new item ID strings to be used in the combined scale.
ncat the number of response categories.
anchor_dep a data.frame containing anchor item parameters for 28 items.
item_order item numeric IDs.
item_id item ID strings. This column refers to column names in raw response data, excluding the participant ID column.
a the discrimination (slope) parameter for the graded response model.
cb1 - cb4 the boundaries between each category-pair for the graded response model.
data_dep a PROsetta_data object containing the datasets above. See loadData for creating PROsetta_data objects.
## load datasets into a PROsetta_data object
data_dep <- loadData(
response = response_dep,
itemmap = itemmap_dep,
anchor = anchor_dep
)
## run descriptive statistics
runDescriptive(data_dep)
## run item parameter calibration on the response data, linking to the anchor item parameters
runLinking(data_dep, method = "FIXEDPAR")