Another study by McConnohie (32) used alphanumeric characters and showed them to the participants through slideshow with three background colour conditions; white, blue and green. All the figure characters were in black. If the colours have positive effect on memory, performance was expected to be equal in these conditions. The result however showed that the slides with the white background resulted in higher retention rates both in immediate and delayed recall tasks than those with blue and green background. This result contradicts the previous studies in that only certain colours lead to better memory. Nevertheless, in this study, the colours chosen and the manipulation in the figure and background colours may explain the result obtained.
retention