Assessing and monitoring client progress and outcomes can be done using various tools and resources that fit the goals, context, and methods. Questionnaires and surveys are standardized or customized instruments that ask clients to rate or report on their situation. Interviews and focus groups are qualitative methods that involve in-depth conversations with clients about their experiences, opinions, needs, or challenges. Observation and documentation are methods of observing and recording client behaviors, actions, or interactions in natural or controlled settings. Examples of these tools include the Outcome Questionnaire (OQ-45), the Goal Attainment Scaling (GAS), the Client Satisfaction Questionnaire (CSQ), the Most Significant Change (MSC) technique, the Appreciative Inquiry (AI) method, or the Critical Incident Technique (CIT). Additionally, Functional Assessment Observation Form (FAOF), Behavioral Observation Scale (BOS), or Goal Observation Scale (GOS) can be used to assess skills, abilities, competencies, progress, challenges, outcomes, and impacts of services.