1) What problems are associated with the use of extrinsic reward 2) How does learning objectives affect student motivation 3) How can you promote intrinsic motivation in student 4) Write short notes on the following i. Physiological Needs ii. Viscerogenic Needs iv. Aesthetic Needs 6.5 FATIGUE AS FACTOR OF LEARNING It is quite essential to do away with fatigue in the process of learning as fatigue becomes an obstacle in the task to be performed or at least reduces its rate of progress. The truth of the matter is that the proportion in which the students becomes fatigued, his achievement curve shows a downward trend. Achievement decreases with the increase in fatigue. Hence, educational psychology makes a detailed study of the cause of fatigue and of the methods of alleviating it.