2021
DOI: 10.1186/s12888-021-03041-4
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Test–retest reliability and convergent validity of the test of nonverbal intelligence-fourth edition in patients with schizophrenia

Abstract: Background Fluid intelligence deficits affect executive functioning and social behaviors in patients with schizophrenia. To help clinicians manage fluid intelligence deficits, a psychometrically sound measure is needed. The purposes of this study were to examine the test–retest reliability and convergent validity of the Test of Nonverbal Intelligence-Fourth Edition (TONI-4) assessing fluid intelligence in patients with schizophrenia. Methods A tota… Show more

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Cited by 8 publications
(5 citation statements)
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“…The results provide information about a child's intelligence with minimal linguistic influence and are compared to age-specific normative data to produce normalised IQ scores. The TONI has demonstrated high test-retest reliability with high correlation coefficients (0.89) and limited random measurement error 56,57 .…”
Section: Methodsmentioning
confidence: 99%
“…The results provide information about a child's intelligence with minimal linguistic influence and are compared to age-specific normative data to produce normalised IQ scores. The TONI has demonstrated high test-retest reliability with high correlation coefficients (0.89) and limited random measurement error 56,57 .…”
Section: Methodsmentioning
confidence: 99%
“…In the current study, the SDM test showed strong betweenperson (α = .90-.92) and within-person reliability (α = .90). Furthermore, it has shown strong 2-week retest reliability (r = .74), convergent and discriminant validity, with scores of measures of different constructs [71][72][73].…”
Section: Processing Speedmentioning
confidence: 99%
“…The Montreal Cognitive Assessment (MoCA) (35) and the Positive and Negative Syndrome Scale (PANSS) (36) were used to assess the overall cognitive function and the severity of psychotic symptoms of the participants, respectively. Previous studies have suggested that MoCA is a validated, clinician friendly, brief instrument for screening cognitive deficits in schizophrenia (37,38). Moreover, we also utilized the Geriatric Depression Scale (GDS) (39) to exclude depression, and a GDS score of 10 or more was considered depressed.…”
Section: Cognitive Assessment and Psychiatric Symptom Assessmentmentioning
confidence: 99%