Smith G E, Bohac D L, Ivnik R J, Malec J F
Psychology Division, Mayo Clinic, Rochester, MN 55905, USA.
J Int Neuropsychol Soc. 1997 Nov;3(6):528-33.
This study examined the utility of word recognition scores for estimating actual Verbal IQ scores obtained from 1-5 years earlier. Participants were 271 persons remaining normal and 24 initially normal persons who developed cognitive impairment over longitudinal follow-up. A previously published regression equation based on education and the American modification of the National Adult Reading Test (Nelson, 1982) was used to estimate Mayo Verbal IQ. In spite of correlating well with prior obtained scores (r = .7) the predicted score tended to overestimate the obtained Mayo Verbal IQ. A revised equation was developed in the normal sample, which improved accuracy of prediction. Among the 24 persons who developed cognitive impairment over a 5-year span, the revised predicted scores provided reasonable estimates of initial Mayo Verbal IQ. To aid in clinical interpretation, a table of the normal frequencies of predicted Mayo Verbal IQ minus contemporaneously obtained Mayo Verbal IQ is provided.
本研究检验了单词识别分数在估计1至5年前获得的实际言语智商分数方面的效用。参与者包括271名保持正常的人和24名最初正常但在纵向随访中出现认知障碍的人。基于教育程度和美国版国家成人阅读测试（纳尔逊，1982年）先前发表的回归方程被用于估计梅奥言语智商。尽管与先前获得的分数相关性良好（r = 0.7），但预测分数往往高估了获得的梅奥言语智商。在正常样本中开发了一个修订方程，提高了预测准确性。在5年期间出现认知障碍的24人中，修订后的预测分数为初始梅奥言语智商提供了合理估计。为帮助临床解释，提供了一个预测梅奥言语智商减去同期获得的梅奥言语智商的正常频率表。
