The model, known as the Systematic Approach to Gathering Evidence (SAGE), has six aims: (1) make decisionmaking explicit and encourage investigators to consider particular actions and behaviors; (2) provide investigators with a structure and identify information they need to collect; (3) encourage communication about the child's world; (4) test the child's competence; (5) facilitate cooperation among professionals; and (6) investigate alleged child sexual abuse within a single-case methodology framework. Ways in which model aims can be met and model techniques are discussed. 4 references and 1 figure