Using a checklist to assess adaptive behavior may limit the information an interviewer gathers about the various activities involved in an individuals behavior. A checklist also may allow the respondent to bias the outcome of the assessment because he or she might not fully understand the intent of certain items or might not know the criteria for scoring. Consciously or unconsciously, the respondent might choose scores that do not reflect the individual’s true behaviors. Reliability studies indicate that the professionally conducted and scored interviews have higher reliability and validity than checklists.