According to Baumol's model of unbalanced growth, if resources are shifting towards industries where productivity is … growing relatively slowly, the aggregate productivity growth rate will slow down. This conclusion is often applied to the … into them may be associated with rising, not falling, aggregate productivity growth …

the so-called "Growth Disease", i.e., the tendency of aggregate productivity growth to slow down in the process of … service sector may raise rather than lower aggregate productivity growth if the service industries produce intermediate rather … raised or lowered aggregate productivity growth in the G7 countries. …

that these two types of externalities co-exist, but differ in their spatial distribution and attenuation within cities …-city industry cluster in a diversified, large city appears to let firms enjoy the benefits of local industry-specific externalities …