Verbal-performance IQ discrepancy and perception of rhythm and timbre

Lateralization of Auditory Rhythm Length in Temporal Lobe Lesions

“…After Surgery 9.0 (1.8) 9.0 (1.3) 7.6 (1.7) 9.0 (1.3) 8.8 (1.4) 7.2 (1.6) As can be seen from the results of the MANOVA in Table 3, upper section, no global effect of focus laterality was found, either on the overall rhythm score, or on reaction time: patients with left or right resections had the same overall rhythm scores and reaction times. As IQ is correlated with the rhythm score (Moore & Hannay, 1982), differences in IQ could be responsible for the lack of hemispheric difference on Rhythm variables (Table 4). ANCOVA with the IQs and the difference between VIQ and PIQ as covariates, however, showed only a slight drop in p-value on overall rhythm score (VIQ as covariate: p=.35), which was not enough to be significant, indicating no discriminating effect on laterality of resection.…”

“…The Seashore versions A (length 5, 6 en 7) and B (length 7, 8 en 9) have been compared in an earlier study in relation to the VIQ and PIQ (Moore & Hannay, 1982). A positive VIQ-PIQ difference was supposed to predispose for more sequential (LH) processing than parallel (RH) processing.…”