Journal of Pediatric Psychology, Vol. 28, No. 6, 2003, pp. 375-382
© 2003 Society of Pediatric Psychology
Assessment of Behavioral Mechanisms Maintaining Encopresis: Virginia Encopresis-Constipation Apperception Test
University of Virginia Health System
All correspondence should be sent to Daniel J. Cox, Behavioral Medicine Center, P.O. Box 800223, University of Virginia Health System, Charlottesville, VA 22908.
Objective To develop and test a scale for parent and child, evaluating theoretical and clinical parameters relevant to children with encopresis. Encopretic children were hypothesized to have more bowel-specific, but not more generic, psychological problems, as compared with nonsymptomatic control children. In addition, mothers were also believed to be more discerning than children. Methods The Virginia Encopresis-Constipation Apperception Test (VECAT) consists of 9 pairs of bowel-specific and 9 parallel generic drawings. Respondents selected the picture in each pair that best described them/their child. It was administered to encopretic children (N = 87), nonsymptomatic siblings (N = 27), and nonsymptomatic nonsiblings (N = 35). The mothers of all the participants also completed the VECAT. Encopretic children were retested 6 and 12 months posttreatment with Enhanced Toilet Training. Results The VECAT demonstrated good test-retest reliability and internal consistency. Encopretic children and their mothers reported more bowel-specific, but not more generic, problems. Bowel-specific scores improved significantly posttreatment only for those patients who demonstrated significant symptom improvement. Mothers were significantly more discerning than children. Conclusion The VECAT is a reliable, valid, discriminating, and sensitive test. Bowel-specific problems appear to best differentiate children with and without encopresis.
Key words: encopresis; constipation; bowel habits; tests; diagnosis; assessment.