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Behavioural Avoidance Tests (BATs) are commonly used for assessing phobias. While easy to deploy, these tests have some practical difficulties. For instance, therapists have to make distance estimations that are hard to do with accuracy and objectivity; or information regarding the performance of the patients (e.g. their walking pattern) is lost. To alleviate these difficulties, a computerized tool has been developed to extract the walking pattern of patients while approaching the phobic stimulus. From a video-recorded BAT session, two visual representations have been explored to compactly summarize the patient's behavior: a static one (an image) and a dynamic one (an animation). A proof-of-concept prototype has been tested with 23 therapists. Most of the therapists preferred the animated representation, since it provides them with a better sense of the dynamics of how the patient really behaved. The participants agreed that this tool might be useful in assisting therapist when assessing phobia through BATs, since diagnostics could be made in a more accurate and objective way. [ABSTRACT FROM AUTHOR]