Linear versus normalized T scores as standardized neuropsychological test scores
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Linear versus normalized T scores as standardized neuropsychological test scores. / Mortensen, E L; Gade, A.
In: Scandinavian Journal of Psychology, Vol. 33, No. 3, 09.1992, p. 230-7.Research output: Contribution to journal › Journal article › peer-review
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TY - JOUR
T1 - Linear versus normalized T scores as standardized neuropsychological test scores
AU - Mortensen, E L
AU - Gade, A
PY - 1992/9
Y1 - 1992/9
N2 - In this paper we present and discuss standardized T score systems for neuropsychological test data. Both linear and normalized T scores were calculated for 141 normal subjects and a group of 141 patients with diffuse or focal brain damage. Many standard neuropsychological tests have skewed raw score and linear T score distributions, and we argue that normalized T scores have practical advantages because they permit simple descriptions of both patient groups and individual test score distributions. We also argue that skewness can be partially explained by ceiling effects and other test construction artefacts and that skewed raw score distributions do not necessarily reflect skewed distributions of the underlying mental abilities. Consequently, use of normalized T scores seems appropriate in many research and clinical contexts.
AB - In this paper we present and discuss standardized T score systems for neuropsychological test data. Both linear and normalized T scores were calculated for 141 normal subjects and a group of 141 patients with diffuse or focal brain damage. Many standard neuropsychological tests have skewed raw score and linear T score distributions, and we argue that normalized T scores have practical advantages because they permit simple descriptions of both patient groups and individual test score distributions. We also argue that skewness can be partially explained by ceiling effects and other test construction artefacts and that skewed raw score distributions do not necessarily reflect skewed distributions of the underlying mental abilities. Consequently, use of normalized T scores seems appropriate in many research and clinical contexts.
KW - Adult
KW - Aged
KW - Female
KW - Humans
KW - Intelligence
KW - Intelligence Tests
KW - Male
KW - Middle Aged
KW - Neuropsychological Tests
U2 - 10.1111/j.1467-9450.1992.tb00912.x
DO - 10.1111/j.1467-9450.1992.tb00912.x
M3 - Journal article
C2 - 1488647
VL - 33
SP - 230
EP - 237
JO - Scandinavian Journal of Psychology
JF - Scandinavian Journal of Psychology
SN - 0036-5564
IS - 3
ER -
ID: 275943404