To investigate the effect of mirror-image and aligned relative positions with learning disabled (LD) children, and to explore the development of orientation ability in both LD and normal children, 30 LD and 30 normal Ss (6- and 8-years old) were given a task in which they were required to match their "horseshoe" to that of the examiner. Twenty-four random presentations consisted of eight combinations of up-down or left-right orientations in mirror-image or aligned relative positions. Findings indicated that mirror-image relative position was significantly more difficult for all Ss than the aligned position, and that LD Ss made significantly more errors than normal Ss. No difference was found between 6-year-old LD and normal Ss, but 8-year-old LD Ss made significantly more errors than 8-year-old normal Ss. (Author/LS)