Criterion validity of the Psychotic-Like Experiences Questionnaire for Children (PLEQ-C)
Journal article
Gutteridge, Tiffany P., Lang, Cathryne P., Turner, Alison M., Jacobs, Brian W. and Laurens, Kristin R.. (2020). Criterion validity of the Psychotic-Like Experiences Questionnaire for Children (PLEQ-C). Schizophrenia Research. 220, pp. 78-84. https://doi.org/10.1016/j.schres.2020.03.067
Authors | Gutteridge, Tiffany P., Lang, Cathryne P., Turner, Alison M., Jacobs, Brian W. and Laurens, Kristin R. |
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Abstract | Psychotic-like experiences (PLEs) are perceptual and thought disturbances that, although common among children, increase risk for future psychopathology, particularly if persistent. Clinical interviews are too time-consuming and costly to administer at a population level, but the criterion validity of a brief questionnaire for screening community samples of children as young as 9 years for PLEs has not been established. This study aimed to test the criterion (concurrent and predictive) validity of the Psychotic-Like Experiences Questionnaire for Children (PLEQ-C). The PLEQ-C (9-item self- and 10-item parent-report versions) was administered to 139 children aged 9–12 years and their caregivers recruited from Greater London, UK. Children additionally completed a diagnostic interview assessing hallucinations and delusions and three further PLEQ-C assessments at approximately 24-month intervals. Concordance of child- and caregiver-reports of PLEs on questionnaire (PLE-Q) was low. Self-reports of any PLE-Q demonstrated good sensitivity (73.3%), specificity (78.5%), positive and negative predictive values (PPV: 72.1%; NPV: 79.5%) for any PLE determined by interview (PLE-I), whereas caregiver-reports of any PLE-Q performed poorly (sensitivity 51.7%, specificity 78.5%, PPV 64.6%, NPV 68.1%). Multinomial regression analyses indicated that children reporting any PLE-Q at screening were at significantly increased risk of reporting PLEs on multiple assessments during adolescence relative to no PLEs, closely replicating the pattern and magnitude of effects (large-to-very large) obtained for children with any PLE-I. The PLEQ-C offers a valid, brief, feasible, and cost-effective means of community screening to identify children who present with PLEs and could be assessed with clinical interview. |
Keywords | psychometric properties; concurrent validity; predictive validity; cross-informant reports; psychopathology; psychotic symptoms |
Year | 2020 |
Journal | Schizophrenia Research |
Journal citation | 220, pp. 78-84 |
Publisher | Elsevier B.V. |
ISSN | 0920-9964 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.schres.2020.03.067 |
Scopus EID | 2-s2.0-85083016241 |
Research or scholarly | Research |
Page range | 78-84 |
Funder | Australian Research Council (ARC) |
Publisher's version | License All rights reserved File Access Level Controlled |
Output status | Published |
Publication dates | |
Online | 08 Apr 2020 |
Publication process dates | |
Accepted | 29 Mar 2020 |
Deposited | 29 Jul 2021 |
ARC Funded Research | This output has been funded, wholly or partially, under the Australian Research Council Act 2001 |
Grant ID | ARC/FT170100294 |
https://acuresearchbank.acu.edu.au/item/8w6z4/criterion-validity-of-the-psychotic-like-experiences-questionnaire-for-children-pleq-c
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