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Perceived and demonstrated aptitudes: Same or different?
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Poh, A. S. H. (1996, November). Perceived and demonstrated aptitudes: Same or different? Paper presented at the ERA-AARE Joint Conference, Singapore.
A self-estimate aptitude scale (SEAS) was partly adapted and developed
to measure six distinct aptitudes: verbal, numerical, form perception,
spatial, clerical and mechanical. The scale was validated for its
factor structure using confirmatory factor analytic procedures when
administered to a group of 1,568 secondary school students in Singapore
schools, together with the same aptitudes from the General Aptitude
Test Battery (GATB) and the Differential Aptitude Tests (DAT).
The results from the viewpoint of the Multitrait Multimethod (MTMM)
tradition, following Campbell and Fiske (1959) arguments for convergent
and discriminant validity did not show that the aptitudes measured by
the SEAS, called perceived aptitudes are similar to the aptitudes
measured by the standardised tests, called demonstrated aptitudes.
Further analysis, using structural equation modelling showed that the
perceived aptitudes and demonstrated aptitudes are more likely to be
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