Final answer:
The question does not specify which stroke screen was used in the video. Stroke screens typically include tests to evaluate cognitive and physical abilities for assessing the stroke's impact and recovery.
Step-by-step explanation:
The stroke screen used in the video is not specifically mentioned in the question or the provided information. However, to assess the effectiveness of a new software program designed to help stroke patients recover problem-solving skills, one would expect that the study employed a type of screen or evaluation tool that measures cognitive functions relevant to problem-solving abilities.
Stroke assessment screens typically involve a series of tests that may include cognitive challenges, physical ability assessments, and sensory perception evaluations. Such screens aim to determine the extent of impairment caused by a stroke and to track recovery progress. Since the studies observed 200 stroke patients using this problem-solving software, the screen could have measured the improvements in patients' abilities to perform tasks or solve problems before and after using the software.