6.1 Learning Curve
Learning curve refers to a graphical representation of the relationship between the duration of learning experience or practice trials and observed changes in performance on the learning task. For instance the depiction of number of errors on a mirror drawing task on ten successive trials will produce a learning curve. Thus the learning curve provides an account of the progress made in learning on a given task during a specific duration In particular the rate of learning has been an issue of great interest among psychologists. In the learning curve, the units of practice /trials are depicted on the horizontal axis and the degree of learning measured in terms of number of errors, correct responses, time taken etc. are shown on the vertical axis. The curves are found to vary in their shapes. Some learning curves show rapid improvement followed by a gradual decrease while others show little improvement in beginning, followed by rapid improvement and finally low improvement. During the process of learning sometimes there is no apparent improvement with increasing trials. This represents a plateau in the learning curve. The shape of learning curve depends on many factors including type of task, individual characteristics and environmental factors.