“…Cause of shift Bowers et al (1970) Combination of factors Gujarati (1972a) Redundancy Payment Act (1965), National Insurance Act (1966) Taylor (1972) 'Labour shake out' (labour dishoarding) Foster (1973) Various reasons Foster (1974) Increase in 1940s birth rates Evans (1975) Increase in structural unemployment Evans (1977) Fluctuations in registered unemployment and registered vacancies Berg (1982) Increase in female labour supply and geographical spreading of labour force Budd et al (1987) Deterioration of human capital (due to long-term unemployment) Jackman et al (1989) Decrease in search intensity Wall and Zoega (2002) Business cycles 16 Bowers et al (1970), Gujarati (1972aGujarati ( , 1972bGujarati ( , 1973, Taylor (1972), Foster (1973, Knight and Wilson (1974), Evans (1975Evans ( , 1977, Peel (1975, 1977), Warren (1977), Parikh (1977), and Bewley (1979), almost all in The Economic Journal and Applied Economics.…”