Effects of Smoking on Mental and Motor Efficiency (Conclusion)

It has been mentioned before that the method in this experiment was to have the four subjects practice the tests until they ceased to improve and then to have them smoke in order to observe the results. These smoking tests were held the evening of Friday or Saturday of each week for four weeks. Each subject usually took all of the tests at 4.30 p. m. and immediately afterward smoked a cigar. As soon as it was smoked, the tests were gone through again and were afterward repeated at intervals of one hour until ten o'clock. They were also gone through twice the next morning, but in no case were any measureable effects found. In fact, from three to four hours after smoking the performances were so nearly normal again that the deviations might well have been accidental. Tests Used: 1. Aiming: Steadiness of Motor Control; 2. Tapping Test; 3. Color Naming Test; 4. Addition Test; 5. Steadiness Test.