TY - JOUR
T1 - Practice Effects and Test-Retest Reliability of the Continuous Performance Test, Identical Pairs Version in Patients with Schizophrenia over Four Serial Assessments
AU - Chen, Kuan Wei
AU - Lin, Gong Hong
AU - Chen, Nan Cheng
AU - Wang, Ji Kuan
AU - Hsieh, Ching Lin
N1 - Funding Information:
This study was supported by the Kaohsiung Municipal Kai-Syuan Psychiatric Hospital (KSPH-2015-31).
PY - 2020/7/24
Y1 - 2020/7/24
N2 - OBJECTIVE: The purposes of this study were to examine the practice effects and test-retest reliability of the Continuous Performance Test, Identical Pairs version (CPT-IP) over four serial assessments in patients with schizophrenia. METHOD: Fifty-six patients with schizophrenia were assessed with the CPT-IP four times, once per week. The CPT-IP contains four indices: "2-digit score," "3-digit score," "4-digit score," and "total score." RESULTS: The four indices showed trivial-to-small practice effects (Cohen's d = -0.13-0.24), good-to-excellent test-retest reliability (ICC = 0.62-0.88), and unacceptable random measurement error (MDC% = 33.8%-110.8%). CONCLUSIONS: The total score had the best reliability among the four indices. Although practice effects of the four indices all appeared cumulative, all four CPT-IP indices reached a plateau after the second assessment. These results indicate that clinicians should interpret the change scores of the CPT-IP conservatively and use the total-score index in their routine repeated assessments.
AB - OBJECTIVE: The purposes of this study were to examine the practice effects and test-retest reliability of the Continuous Performance Test, Identical Pairs version (CPT-IP) over four serial assessments in patients with schizophrenia. METHOD: Fifty-six patients with schizophrenia were assessed with the CPT-IP four times, once per week. The CPT-IP contains four indices: "2-digit score," "3-digit score," "4-digit score," and "total score." RESULTS: The four indices showed trivial-to-small practice effects (Cohen's d = -0.13-0.24), good-to-excellent test-retest reliability (ICC = 0.62-0.88), and unacceptable random measurement error (MDC% = 33.8%-110.8%). CONCLUSIONS: The total score had the best reliability among the four indices. Although practice effects of the four indices all appeared cumulative, all four CPT-IP indices reached a plateau after the second assessment. These results indicate that clinicians should interpret the change scores of the CPT-IP conservatively and use the total-score index in their routine repeated assessments.
KW - Continuous Performance Test
KW - Identical Pairs version
KW - Practice effects
KW - Schizophrenia
KW - Sustained attention
KW - Test–retest reliability
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U2 - 10.1093/arclin/acaa004
DO - 10.1093/arclin/acaa004
M3 - Article
C2 - 32090234
AN - SCOPUS:85088682691
SN - 0887-6177
VL - 35
SP - 545
EP - 552
JO - Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists
JF - Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists
IS - 5
ER -
