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We are talking about a tool for research and writing , something that takes some of the drudgery out of parts of the humanist 's work . These opacity and transparency effects are analyzed as consequences of the high ranking of ' grounded ' constraints rooted in the articulatory incompatibility of the fronting and raising of the tongue with its retraction . Fewer problems appeared with background variables than with press and attitude variables . The physiological basis of encopresis is chronic or intermittent retention of feces , resulting in distension of the rectum and colon leading to a lack of sensitivity for the defecation reflex . Overflow incontinence resulting from constipation can be caused by faulty nutrition , structural disease of the anus , rectum and colon , or endocrine or neurological disorders . EDA showed these press and attitude variables to be problematic in several respects . In the United States the media probably do as much education and miseducation as the schools ; there are messages on the street , there are messages in the family , church , all those other institutions . This pattern , which appeared repeatedly across the TIMSS press and attitude variables in the German data , calls the validity of the responses into question .