drop_item: Internal consistency reliability

In DavideMassidda/testing: Psychometric Testing

Internal consistency reliability

Description

Verify the internal consistency of a scale by dropping items individually.

Usage

drop_item(x, cor.method = c("pearson", "biserial", "polyserial"), fn = sum)

Arguments

x	Data frame of observed data.
cor.method	Type of correlation to use.
fn	Function to use to calculate total scores.

Details

The function delete deleting each item in turn, computing at each time the correlation between the new total score and the deleted item. Moreover, the function calculate the variation in Cronbach's alpha following the deletion of the target item.

See Also

cronbach_alpha, splithalf_reliability

Examples

data("drive")
drop_item(drive[,5:10])

DavideMassidda/testing documentation built on Oct. 12, 2023, 4:32 p.m.