be especially suspicious of low scores,users of group test must assume that subjects understand the purpose of testing, what to do well, and are equally rested and free of emotional problems.many group tests also require reading ability as well as an interest in solving test problems. failing to fulfill any of these assumptions and requirements can produce an artificially low score.
consider wide discrepancies a warning signal.
when an individual exhibits wide discrepancies either among test scores or between a test score and other data, all may be well with the individual (assuming no clerical errors). the discrepancy may reflect emotional problems or severe stress. for example ,a child with high test scores may obtain poor grades because of emotional upset.or a child with good grade may obtain a poor test because of a crisis,such as a death in the family