The Use of Items and Item Parcels in Nonlinear Structural Equation Models
Nonlinear structural equation models within the frequentist framework were developed to work with continuous items. Applied researchers who usually work with Likert-type items choose between two strategies to estimate such models: treat items as continuous variables or create item parcels. Two Monte...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
PsychOpen GOLD/ Leibniz Institute for Psychology
2020-04-01
|
| Series: | Methodology |
| Subjects: | |
| Online Access: | https://meth.psychopen.eu/index.php/meth/article/view/2305 |
| _version_ | 1797967124783693824 |
|---|---|
| author | Karina Rdz-Navarro Rodrigo A. Asún |
| author_facet | Karina Rdz-Navarro Rodrigo A. Asún |
| author_sort | Karina Rdz-Navarro |
| collection | DOAJ |
| description | Nonlinear structural equation models within the frequentist framework were developed to work with continuous items. Applied researchers who usually work with Likert-type items choose between two strategies to estimate such models: treat items as continuous variables or create item parcels. Two Monte Carlo studies were conducted to evaluate the effects of each strategy on estimates and Type I errors for models with interaction and quadratic effects estimated using LMS. The first study evaluated the effect of asymmetry type and item quantity. The second assessed the use of item parcels and parcel configuration under equivalent conditions. Results reveal that treating items as continuous variables is not problematic when item categories are symmetrical or have opposite-direction asymmetries; however, meaningful parameter bias and increased Type I errors are produced in the case of same-direction asymmetry. Use of parcels does not overcome these problems. The results are discussed to provide recommendations for applied researchers. |
| first_indexed | 2024-04-11T02:26:15Z |
| format | Article |
| id | doaj.art-c738c545d30d4b339dc010af54ab1904 |
| institution | Directory Open Access Journal |
| issn | 1614-2241 |
| language | English |
| last_indexed | 2024-04-11T02:26:15Z |
| publishDate | 2020-04-01 |
| publisher | PsychOpen GOLD/ Leibniz Institute for Psychology |
| record_format | Article |
| series | Methodology |
| spelling | doaj.art-c738c545d30d4b339dc010af54ab19042023-01-02T22:41:12ZengPsychOpen GOLD/ Leibniz Institute for PsychologyMethodology1614-22412020-04-0116112010.5964/meth.2305meth.2305The Use of Items and Item Parcels in Nonlinear Structural Equation ModelsKarina Rdz-Navarro0Rodrigo A. Asún1Faculty of Social Sciences, University of Chile, ChileFaculty of Social Sciences, University of Chile, ChileNonlinear structural equation models within the frequentist framework were developed to work with continuous items. Applied researchers who usually work with Likert-type items choose between two strategies to estimate such models: treat items as continuous variables or create item parcels. Two Monte Carlo studies were conducted to evaluate the effects of each strategy on estimates and Type I errors for models with interaction and quadratic effects estimated using LMS. The first study evaluated the effect of asymmetry type and item quantity. The second assessed the use of item parcels and parcel configuration under equivalent conditions. Results reveal that treating items as continuous variables is not problematic when item categories are symmetrical or have opposite-direction asymmetries; however, meaningful parameter bias and increased Type I errors are produced in the case of same-direction asymmetry. Use of parcels does not overcome these problems. The results are discussed to provide recommendations for applied researchers.https://meth.psychopen.eu/index.php/meth/article/view/2305item parcelsinteraction effectsquadratic effectsnonlinear semlatent moderated structural equations |
| spellingShingle | Karina Rdz-Navarro Rodrigo A. Asún The Use of Items and Item Parcels in Nonlinear Structural Equation Models Methodology item parcels interaction effects quadratic effects nonlinear sem latent moderated structural equations |
| title | The Use of Items and Item Parcels in Nonlinear Structural Equation Models |
| title_full | The Use of Items and Item Parcels in Nonlinear Structural Equation Models |
| title_fullStr | The Use of Items and Item Parcels in Nonlinear Structural Equation Models |
| title_full_unstemmed | The Use of Items and Item Parcels in Nonlinear Structural Equation Models |
| title_short | The Use of Items and Item Parcels in Nonlinear Structural Equation Models |
| title_sort | use of items and item parcels in nonlinear structural equation models |
| topic | item parcels interaction effects quadratic effects nonlinear sem latent moderated structural equations |
| url | https://meth.psychopen.eu/index.php/meth/article/view/2305 |
| work_keys_str_mv | AT karinardznavarro theuseofitemsanditemparcelsinnonlinearstructuralequationmodels AT rodrigoaasun theuseofitemsanditemparcelsinnonlinearstructuralequationmodels AT karinardznavarro useofitemsanditemparcelsinnonlinearstructuralequationmodels AT rodrigoaasun useofitemsanditemparcelsinnonlinearstructuralequationmodels |