Page 4 - Portfolio Analysis
P. 4

FIGURE 1


                                      THE EXPERIENCE CURVE






                                COSTS
                                          a

                                          b


                                                                x             y

                                                        VOLUME



               It has been shown that each time the accumulated experience of
               manufacturing a particular product doubles (See figure 1) so the total
               costs of making it tend to decline by a characteristic percentage - usually
               between 20 and 30 per cent.

               Since the experience curve effect applies to all value added it subsumes
               economies of scale and specialisation effects.  In addition cost savings will
               occur through learning by doing.


               The BCG suggest various reasons for the experience curve effect.


               a) THE LEARNING FUNCTION:

               Labour (and management) learns by repetition. Consequently, anyone
               doing a job does it more and more efficiently over time.  This should lead
               to a reduction in labour costs which should decline by between 10-15 per
               cent each time cumulative experience doubles.
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