Validation of the De Jong Gierveld Loneliness Scale in Peruvian old adults: a study based on SEM and IRT multidimensional models.

Loneliness is a public health problem. Its assessment is important to identify older adults who experience greater loneliness and appropriate interventions can be carried out. The De Jong Gierveld Solitude Scale (DJGLS) is one of the most widely used, at least in the European context, to measure loneliness.

Validity of the de Jong Gierveld Loneliness Scale in Spanish older population: competitive structural models and item response theory.

Loneliness is a subjective measure of one's state of mind and the negative feelings about one's level of social contact, which usually involves an unwanted discrepancy between existing and desired relationships. It is measured through self-reported questionnaires, among which a widely used one is the de Jong Gierveld Loneliness Scale (DJGLS). Although it has been previously tested and proven to be a reliable tool for measuring loneliness of Spanish older people, some relevant research questions remain unsolved.

Traditional scores versus IRT estimates on forced-choice tests based on a dominance model.

Background: Forced-choice tests (FCTs) were proposed to minimize response biases associated with Likert format items. It remains unclear whether scores based on traditional methods for scoring FCTs are appropriate for between-subjects comparisons. Recently, Hontangas et al.

Comparing Traditional and IRT Scoring of Forced-Choice Tests.

This article explores how traditional scores obtained from different forced-choice (FC) formats relate to their true scores and item response theory (IRT) estimates. Three FC formats are considered from a block of items, and respondents are asked to (a) pick the item that describes them most (PICK), (b) choose the two items that describe them the most and the least (MOLE), or (c) rank all the items in the order of their descriptiveness of the respondents (RANK). The multi-unidimensional pairwise-preference (MUPP) model, which is extended to more than two items per block and different FC formats, is applied to obtain the responses to each item block.