Question: who has developed a cognitive theory of behavior change
[{'answer': 'Kanfer and Saslow', 'provenance': [{'wikipedia_id': '5750', 'title': 'Cognitive behavioral therapy', 'start_paragraph_id': 18, 'start_character': 45, 'end_paragraph_id': 18, 'end_character': 62, 'bleu_score': 1.0, 'section': 'Section::::Description.:Phases in therapy.\n'}]}, {'provenance': [{'wikipedia_id': '5750', 'title': 'Cognitive behavioral therapy', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 461, 'bleu_score': 0.9735040436119741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15527653575836221693}, 'section': 'Section::::Description.:Phases in therapy.\n'}]}]