Which scale short form development method is better? A Comparison of ACO, TS, and SCOFA

Koğar, Hakan

doi:10.21449/ijate.946231

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…This exceeds the criteria required for structural equation modelling ( Bentler & Chou, 1987 ; Wolf et al., 2013 ). Whilst guidelines regarding adequate sample size for ACO do not currently exist, this sample size was determined to be more than sufficient, given that this method has been demonstrated to cope well with major misspecifications at a sixth of the sample size ( Koğar, 2022 ).…”

Section: Methodsmentioning

confidence: 99%

Measuring dissociation across adolescence and adulthood: developing the short-form Černis Felt Sense of Anomaly scale (ČEFSA-14)

Černis,

Loe,

Lofthouse

et al. 2023

Behav. Cogn. Psychother.

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Background: Dissociation may be important across many mental health disorders, but has been variously conceptualised and measured. We introduced a conceptualisation of a common type of dissociative experience, ‘felt sense of anomaly’ (FSA), and developed a corresponding measure, the Černis Felt Sense of Anomaly (ČEFSA) scale. Aims: We aimed to develop a short-form version of the ČEFSA that is valid for adolescent and adult respondents. Method: Data were collected from 1031 adult NHS patients with psychosis and 932 adult and 1233 adolescent non-clinical online survey respondents. Local structural equation modelling (LSEM) was used to establish measurement invariance of items across the age range. Ant colony optimisation (ACO) was used to produce a 14-item short-form measure. Finally, the expected test score function derived from item response theory modelling guided the establishment of interpretive scoring ranges. Results: LSEM indicated 25 items of the original 35-item ČEFSA were age invariant. They were also invariant across gender and clinical status. ACO of these items produced a 14-item short-form (ČEFSA-14) with excellent psychometric properties (CFI=0.992; TLI=0.987; RMSEA=0.034; SRMR=0.017; Cronbach’s alpha=0.92). Score ranges were established based on the expected test scores at approximately 0.7, 1.25 and 2.0 theta (equivalent to standard deviations above the mean). Scores of 29 and above may indicate elevated levels of FSA-dissociation. Conclusions: The ČEFSA-14 is a psychometrically valid measure of FSA-dissociation for adolescents and adults. It can be used with clinical and non-clinical respondents. It could be used by clinicians as an initial tool to explore dissociation with their clients.

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Section: Methodsmentioning

confidence: 99%

Measuring dissociation across adolescence and adulthood: developing the short-form Černis Felt Sense of Anomaly scale (ČEFSA-14)

Černis,

Loe,

Lofthouse

et al. 2023

Behav. Cogn. Psychother.

View full text Add to dashboard Cite

show abstract

“…This exceeds the criteria required for structural equation modelling (Bentler and Chou, 1987;Wolf et al, 2013). Whilst guidelines regarding adequate sample size for ACO do not currently exist, this sample size was determined to be more than sufficient, given that this method has been demonstrated to cope well with major misspecifications at a sixth of the sample size (Koğar, 2022).…”

Section: Participants and Proceduresmentioning

confidence: 99%

Measuring dissociation across adolescence and adulthood: Developing the short-form Cernis Felt Sense of Anomaly scale (CEFSA-14)

Černis¹,

Loe²,

Lofthouse³

et al. 2023

Preprint

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BackgroundDissociation may be important across many mental health disorders, but has been variously conceptualised and measured. We introduced a conceptualisation of a common type of dissociative experience, ‘felt sense of anomaly’ (FSA), and developed a corresponding measure, the Černis Felt Sense of Anomaly (ČEFSA) scale.AimsWe aimed to develop a short-form version of the ČEFSA that is valid for adolescent and adult respondents.MethodData were collected from 1031 adult NHS patients with psychosis and 932 adult and 1233 adolescent non-clinical online survey respondents. Local structural equation modelling (LSEM) was used to establish measurement invariance of items across the age range. Ant colony optimisation (ACO) was used to produce a 14-item short-form measure. Finally, the expected test score function derived from item response theory modelling guided the establishment of interpretive scoring ranges.ResultsLSEM indicated 25 items of the original 35-item ČEFSA were age invariant. They were also invariant across gender and clinical status. ACO of these items produced a 14-item short-form (ČEFSA-14) with excellent psychometric properties (CFI=0.992; TLI=0.987; RMSEA=0.034; SRMR=0.017; Cronbach’s alpha=0.92). Score ranges were established based on the expected test scores at approximately 0.7, 1.25, and 2.0 theta (equivalent to standard deviations above the mean). Scores of 29 and above may indicate elevated levels of FSA-dissociation.ConclusionsThe ČEFSA-14 is a psychometrically valid measure of FSA-dissociation for adolescents and adults. It can be used with clinical and non-clinical respondents. It could be used by clinicians as an initial tool to explore dissociation with their clients.

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Which scale short form development method is better? A Comparison of ACO, TS, and SCOFA

Cited by 2 publications

References 23 publications

Measuring dissociation across adolescence and adulthood: developing the short-form Černis Felt Sense of Anomaly scale (ČEFSA-14)

Measuring dissociation across adolescence and adulthood: developing the short-form Černis Felt Sense of Anomaly scale (ČEFSA-14)

Measuring dissociation across adolescence and adulthood: Developing the short-form Cernis Felt Sense of Anomaly scale (CEFSA-14)

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