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Table 5 Percentage of the effect of low and intermediate level adult occupation (compared with high occupational level) taken into account by sub-tests of the Groningen Intelligence Test a

From: To what extent does IQ 'explain' socio-economic variations in function?

  % taken into account by:
  Doing Sums Vocabulary Mental Rotation Analogies Fluency
Physical functioning      
   High occupational level (reference) (reference) (reference) (reference) (reference)
   Intermediate level 49 % >100 % 22 % 100 % 34 %
   Low occupational level 44 % 64 % 07 % 34 % 14 %
Affective functioning      
   High occupational level (reference) (reference) (reference) (reference) (reference)
   Intermediate level 09 % 59 % 34 % 66 % 00 %
   Low occupational level 15 % 37 % 12 % 28 % 00 %
Cognitive functioning      
   High occupational level (reference) (reference) (reference) (reference) (reference)
   Intermediate level 21 % 45 % 05 % 30 % 24 %
   Low occupational level 23 % 37 % 02 % 16 % 18 %
  1. a The percentage is the percentage decline of the B-coefficients of the effect of adult occupational level in the model with the particular intelligence sub-test included compared with the model without that sub-test (i.e. model 2 in Table 3).