E encountered in his study was one of validity. Among the tests Dr. E used for data collection were the food diaries and the Exercise Observation Sheet. The former had a good reputation but as far as Dr. E. knew the test had never previously been used among older adults as he used it in this study. The Exercise Observation sheet also had previously been widely used, however prior to this study it was used as a self-report, whereas in this study the staff filled out how often the participants exercised over the thirty days of the study. Moreover, the study was meant to examine how diet and exercise impacted lifespan among older adults but neither these nor the demographics sheet given to the participants measured effect on lifespan. In redoing this experiment, Dr. E might look for a test which more accurately assesses lifespan changes as well as use a test or data collection method which has typically had its application among older
E encountered in his study was one of validity. Among the tests Dr. E used for data collection were the food diaries and the Exercise Observation Sheet. The former had a good reputation but as far as Dr. E. knew the test had never previously been used among older adults as he used it in this study. The Exercise Observation sheet also had previously been widely used, however prior to this study it was used as a self-report, whereas in this study the staff filled out how often the participants exercised over the thirty days of the study. Moreover, the study was meant to examine how diet and exercise impacted lifespan among older adults but neither these nor the demographics sheet given to the participants measured effect on lifespan. In redoing this experiment, Dr. E might look for a test which more accurately assesses lifespan changes as well as use a test or data collection method which has typically had its application among older