pvq21 {persval}R Documentation

Compute personal values from PVQ-21/ESS21 data

Description

This function computes personal values scores and different higher-order dimensions related to Schwartz's theoretical framework based on the 21 items of the PVQ-21 European Social Survey Value Scale (Schwartz, 2003). By default, the function applies the recommended statistical adjustment (individual MRAT centering) as suggested by the authors, to correct for individual differences in response styles thus enhancing the interpretative validity of the scores.

Usage

pvq21(df, items = NULL, compute = "all", correction = TRUE, na.rm = TRUE)

Arguments

df

A Data frame containing the raw responses for the 21 PVQ items. If "items" is not provided, it must have exactly 21 columns, and their order must correspond to the PVQ-21 items.

items

An optional vector containing the names or indices of the columns that correspond to the PVQ-21 items. Must be exactly 21 items. If NULL, the function assumes the items are the only columns given in the "df" parameter.

compute

Character. Indicates which personal values scores to compute and return. Possible values are "all" (default), "ten.values", "four.higher", "two.foci", or "two.dynamics".

correction

Logical. When TRUE, the scores are corrected for individual differences in the use of the response scale. Default is TRUE.

na.rm

Logical. When TRUE, NAs are ignored in calculations; when FALSE, NAs are preserved and will affect calculations. Default is TRUE.

Value

A data frame with computed values. If both "df" and "items" parameters are provided, the returned data frame includes the original data with the calculations appended as new columns.

Note

Developed by Giuseppe Corbelli, email: giuseppe.corbelli@uninettunouniversity.net, giuseppe.corbelli@uniroma1.it

Examples

persval::pvq21(df = data.frame(
pvq1 = c(3, 1, 4), pvq2 = c(2, 5, 3), pvq3 = c(1, 5, 2), pvq4 = c(4, 3, 5),
pvq5 = c(5, 2, 1), pvq6 = c(3, 4, 2), pvq7 = c(1, 2, 4), pvq8 = c(3, 1, 5),
pvq9 = c(2, 4, 1), pvq10 = c(5, 3, 2), pvq11 = c(1, 4, 3), pvq12 = c(2, 1, 5),
pvq13 = c(3, 5, 4), pvq14 = c(1, 2, 3), pvq15 = c(4, 5, 1), pvq16 = c(2, 3, 4),
pvq17 = c(5, 1, 2), pvq18 = c(3, 4, 1), pvq19 = c(2, 3, NA), pvq20 = c(1, 3, 4),
pvq21 = c(2, 5, 1)
),
correction = TRUE,
compute = "all",
na.rm = TRUE)


[Package persval version 1.0.0 Index]