Comparison of Short and Long Versions of the Prudhoe Cognitive Function Test and the K-BIT in Participants with Intellectual Impairment

• Published in: Journal of autism and developmental disorders Vol. 40; no. 8; pp. 1000 - 1005
• Main Authors: Tyrer, Stephen P., Wigham, Ann, Cicchetti, Domenic, Margallo-Lana, Marisa, Moore, P. Brian, Reid, Barbara E.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-08-2010; Springer; Springer Nature B.V
• Subjects: Adult; Aged; Aged, 80 and over; Assessment; Autism; Behavioral Science and Psychology; Biological and medical sciences; Child and School Psychology; Cognition; Cognitive abilities; Cognitive Ability; Cognitive functioning; Computation; Correlation; Correlation coefficients; Dementia; Evaluation Methods; Female; Humans; Intellectual Disability; Intellectual Disability - diagnosis; Intellectual Disability - psychology; Intelligence Quotient; Intelligence Tests; Intelligence Tests - standards; Kaufman Brief Intelligence Test; Male; Medical sciences; Mental Retardation; Middle Aged; Mild Intellectual Disability; Neurosciences; Original Paper; Patients; Pediatrics; Performance Based Assessment; Psychiatry; Psychology; Psychology. Psychoanalysis. Psychiatry; Psychometrics. Diagnostic aid systems; Psychopathology. Psychiatry; Public Health; Reproducibility of Results; Severe Disabilities; Short forms; Techniques and methods; Test Reliability; Test Validity; Young Adult; Disability; Cognitive; PCFT; K-BIT; Intellectual; Assessment; Abbreviated form; Handicap; Human; Evaluation; Cognitive ability; Psychometrics; Cognition; Developmental disorder; Intelligence test; Test reliability; Mental retardation; Test validation; Intellectual deficiency; Comparative study
• ISSN: 0162-3257; 1573-3432
• DOI: 10.1007/s10803-010-0949-3

The Prudhoe Cognitive Function Test (PCFT) directly measures the cognitive abilities of people with intellectual impairment. This study examined the relationship between this instrument and the Kaufman Brief Intelligence Test (K-BIT) and two shorter versions of the same scale. High correlations between the verbal and performance sections of the K-BIT and the Long PCFT were found with correlation coefficients of 0.85 and 0.78, respectively. Extremely high correlations between the Short versions of the PCFT and the Long version were obtained at 0.97 for Form A and 0.98 for Form B, illustrating that both Short forms and the Long form are essentially interchangeable. The PCFT is a reliable and robust schedule in the assessment of cognitive function in this population.