The first aim of this study was to assess the proportion of students at different levels in a Nigerian secondary school who interpret selected diagrams in 3 or 2 dimensional terms and to see if there are differences between these interpretations and those of English students. (Author/AM)

Significant cross-cultural differences were found between the samples of Bukusu and Scottish children in their responses to nonsymmetrical patterns, the Bukusu sample making more errors. However, both samples made use of the symmetrical properties of a pattern to aid recall. (Author/AM)

Two experiments were conducted to compare the effectiveness of different ways of producing the frames in a remedial self-instructional program intended to improve the ability of Nigerian secondary school students to understand spatial relationships in pictures. (Author/AM)

Tries to unravel some of the problems concerning the previous finding that increasing the number of depth cues in pictures has a depressing effect on spatial accuracy of three dimensional reconstruction of pictures. Evidence does not support a deficiency in perceiving pictorial depth in African children. (AM)