Students in Lesotho secondary schools were given a test on the logical connectives and, or, and if-then in either English or Sesotho. In forms 1 and 2, the Sesotho groups performed better than the English groups, although both groups performed poorly. In form 4, the English group excelled. Analysis of responses to certain categories of questions was undertaken, for example, questions with
... [Show full abstract] negatives, questions which called for indirect reasoning, or questions whose answers were not determinable. Certain incorrect reasoning patterns, such as inverse reasoning, were investigated. Although certain differences between language groups were found, the differences were attributed to relative understanding of language rather than to Whorfian differences in logic between language groups.