This superiority of boys was not, however, found on the measure involving discrimination between facsimile and enantiomorphic responses; the second hypothesis that boys will, more often than girls, identify facsimiles rather than enantiomorphs
as representing the lamellae is therefore not supported by the results.
Furthermore, as the sloping stimuli are more readily confused, the two postulated enantiomorphs by means of which each stimulus is encoded must differ much more markedly in the case of stimuli in the fronto-parallel plane than in the case of the stimuli in inclined planes.
After presentation of the last lamella the participant was presented with a set of 60 cards, 15 of which bore depictions of the stimulus pentagons as they would appear in the fronto-parallel plane, 15 of which bore enantiomorphs of these depictions, and 30 of which portrayed pentagons unrelated to the pentagons used as stimuli.
Thus three scores were obtained in response to the facsimile depictions and three to their enantiomorphs.
It incorporates an assumption that the confusability of enantiomorphs indicates that enantiomorphs are used to encode the orientation of planes of stimuli with respect to the fronto-parallel plane.
Two arrangements of the enantiomorphs which are referred to as 'bd' and 'db' and which differed in positioning of the axis of symmetry were used for construction of the response stimuli (see Fig.
The results clearly show that orientation of the stimulus affects the relative strength of the encoded enantiomorphs.