Feature Fusion Strategies for End-to-End Evaluationof Cognitive Behavior Therapy Sessions
Table 1: CBT behavior codes defined by the CTRS manual
['Abbr.', 'CTRS Code', 'low/high']
In this paper, we use 225 coded CBT sessions for experiments which include the 92 sessions used in [flemotomos2018language] with the highest and lowest total CTRS and 133 additional sessions to balance the distribution. Each session considered is a dyadic conversation between a therapist and a patient. We manually transcribed the sessions including information about talk turns, speaker roles, and punctuation. The sessions were recorded at a 16kHz sampling rate and their lengths range from 10 to 90 minutes. We binarized the CTRS codes by assigning codes greater or equal to 4 as “high” and less than 4 as “low” since 4 is the primary anchor indicating the skill is fully present, but still with room for improvement [young1980cognitive]. The threshold indicative of CBT competence on the total CTRS is 40 [vallis1986cognitive].