Meet the member


In the field of engineering design, spatial perception of orthographic views of


technical components is a demanding task.


Muller-Lyer illusion 25% fin length


Fin angle


Overall mean scores % error


Overall mean scores straight line comtrol test % error


Swaziland unbalanced display


30o 45o 60o Swaziland balanced display UK balanced display 30o 45o 60o 30o -18.5 -14.65 -11.3 -18.6 -15.0 -10.42 -22 -3 -3


45o -18


60o -13


UK unbalanced display


30o -25


45o -21


60o -16


Table 1: Details of overall mean scores for Swaziland and UK subjects with Muller-Lyer Illusion and Straight-Line Control Test. Negative sign indicates perceptual over-estimation of variable stimulus


25


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