Objectives: Recently, a newly developed German program for the prevention of anorexia nervosa in girls ("PriMa") was successfully tested for effectiveness in a controlled study with prepost-design in 1,006 girls from 42 Thuringian schools (Berger et al. 2007). In the present article the test of the program's effectiveness was completed by an evaluation of the program's conception and its process.
Method: Using questionnaires, protocols and phone interviews, single parts of the program (kick-off presentation, n = 400; teachers training, n = 34; lessons, n = 392) as well as single lessons (n = 87 girls and n = 14 teachers) were evaluated.
Results: All parts of the program were evaluated as being significantly positive (better than 2.5 on a six-point scale). The questionnaires used were reliable (Cronbach's alpha between .74 and .84). The survey of program users resulted in shorter research questionnaires, a more detailed teaching manual with more interactive exercises and smaller training groups (14 instead of 20 participants).
Discussion: The introduced work points out the need to complete the evaluation of program impact with verbal and written evaluations of direct and indirect program users. This is the only way to reveal information about the program's strengths and weaknesses to continuously adjust and improve single program parts.