2 What happened, however, suggests that the rational arguments that I have just propounded do not always chime with public opinion. Again, it strikes me as interesting to ask why this should be the case. To answer this question, it is necessary to enter the realm of the analysis of human behaviour, via the field of behavioural economics.
The pressures are reflected in a major increase in on-the-job training and a dramatic expansion of college enrolment, especially at community colleges. As a result, the average age of full-time college students has risen dramatically in recent years as large numbers of experienced workers return to school for skill upgrading.