2022
DOI: 10.3390/ctn6040024
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Adaptation of the Aphasia Impact Questionnaire-21 into Greek: A Reliability and Validity Study

Abstract: The impact of aphasia on the everyday life of Greek-speaking people with aphasia (PWA) is often underestimated by rehabilitation clinicians. This study explores the adaptation and psychometric properties of the Greek (GR) version of The Aphasia Impact Questionnaire-21 (AIQ-21-GR) to address this issue. The aim of this study is to determine the reliability and validity of the Greek version of the AIQ-21. The AIQ-21-GR was administered to 69 stroke survivors, 47 with aphasia and 22 without aphasia. The data were… Show more

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Cited by 7 publications
(8 citation statements)
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“…The research team consisted of 7 individuals: a leading investigator, 2 PPI partners and 4 communication partners. The rst author (MC), a senior speech and language therapist practising in aphasia rehabilitation, with previous PPI experience in aphasia research1 served as the lead investigator [7,9,14]. The two PPI partners are co-authors AK and JRS.…”
Section: The Research Teammentioning
confidence: 99%
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“…The research team consisted of 7 individuals: a leading investigator, 2 PPI partners and 4 communication partners. The rst author (MC), a senior speech and language therapist practising in aphasia rehabilitation, with previous PPI experience in aphasia research1 served as the lead investigator [7,9,14]. The two PPI partners are co-authors AK and JRS.…”
Section: The Research Teammentioning
confidence: 99%
“…AK holds a Master of Science (MSc) in Social Research Methods from the University of Sussex and was enrolled in doctoral studies in Social Care but dropped out after her stroke event. She has previous experience as a PPI partner on research projects, and has co-authored publications from the research [9,14]. JRS was Professor of English Linguistics at the University of Lausanne and is now retired.…”
Section: The Research Teammentioning
confidence: 99%
“…Commonly a correlation of ρ > 0.9 or ρ < -0.9, is considered an acceptable validity cut-off in psychometry, while a correlation between 0.5 > ρ > -0.5, typically indicates very poor validity (Taherdoost, 2016; see also Charalambous, Phylactou, Kountouri, et al, 2022;Charalambous, Phylactou, Elriz, et al, 2022;Hilari et al, 2003Hilari et al, , 2018.…”
Section: Simulation 1: Correlations As a Measure Of Validitymentioning
confidence: 99%
“…In this scenario, a correlation analysis between the two scales (Figure 2B), indicates an almost perfect linear relationship (Pearson's ρ = .999, BF10 = 7.30 x 10 143 ). Considering how correlations have been previously used to test validity (e.g., Charalambous, Phylactou, Kountouri, et al, 2022;Charalambous, Phylactou, Elriz, et al, 2022;Drevon et al, 2017;Hilari et al, 2018;Yaşar et al, 2021), we should assume that the scale with the systematic error is a valid measure, since the correlation is almost perfect, despite the fact that in every measure by the faulty scale there is a constant difference from the actual weight between 4.9 kg and 5.1 kg. In other words, the results from this correlation analysis are misleading and can be misinterpreted as evidence of high validity, even though the two tools provide different observations.…”
Section: Simulation 2: How Correlations Can Fail As a Validity Testmentioning
confidence: 99%
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