Assessment and Evaluation
Purposes and limits
Assessment in art therapy serves description, formulation, and treatment planning-not stand-alone diagnosis. Know the difference between formal instruments with published psychometric support and informal observational methods. Familiarize yourself with widely taught tools by purpose: the Draw-a-Person and Kinetic Family Drawing as projective-adjacent prompts with contested validity; the House-Tree-Person as a structured interview aid; the Person Picking an Apple from a Tree and the Formal Elements Art Therapy Scale (FEATS) for rating formal elements such as color prominence and line quality; the Bird's Nest Drawing for attachment themes; and the Bridge Drawing for goal orientation. Understand that FEATS rates formal properties, not symbolic content, and requires trained raters.
Observational domains
Candidates should describe what to observe: approach to materials, persistence, organization of the page, color use, line pressure, narrative coherence, and the client's verbal associations. Integrate behavioral observation, history, and collateral information. Document baseline, change over time, and response to specific media.
Traps
High-yield traps include treating a single indicator (e.g., heavy line pressure) as proof of a diagnosis, ignoring cultural and developmental norms, and confusing reliability with validity. Another trap: claiming an instrument is diagnostic when it is only descriptive. Questions may ask what to do when an image suggests risk-the answer is to assess directly and follow safety protocols, not to interpret the drawing as confirmation.
Rule of thumb
Use the "convergence" rule: no conclusion rests on one drawing feature. Require convergence across art behavior, verbal report, history, and standardized data before it informs the plan.
Worked example: A drawing shows a tiny figure and faint lines. A question asks what this means. The correct response is that it is a hypothesis worth exploring with the client and comparing to other data-not evidence of depression.