Judges holding divergent attitudes toward high contact uses of water reclaimed from community sewage rated two sets of attitude statements regarding this issue. Results showed a close linear relationship between item scale values obtained from positive and negative attitudinal groups, and also a somewhat reduced range of ratings for judges holding unfavorable personal attitudes toward reuse. These findings, and the findings of previous research on this issue, were seen as being consonant with an item displacement theory of rating performance and supportive of equal interval measurement.
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