To determine the validity of the Learning Potential Computerised Adaptive Test (LPCAT), information obtained from several studies were used. The samples for these studies varied in terms of educational levels (from low-literate adults to tertiary university levels). Various other measures of cognitive ability (e.g., the Differential Aptitude Test (DAT), the Paper-and-Pencil-Games (PPG), the General Scholastic Aptitude Test-Computerised Adaptive Test (GSAT-CAT)) and various types of academic results were used as criterion depending on the context of the study (De Beer, 2013). The methods described above, are … (a) discriminant validity (b) theory-related group comparison (c)correlations with other tests (d) factorial validity (e) convergent validity