The paper studies the degree of homogeneity of innovative behavior in order to determine empirically an industry classification of Dutch manufacturing that can be used for policy purposes. We use a two-limit tobit model with sample selection, which explains the decisions by business enterprises...

The paper studies the degree of homogeneity of innovative behavior in order to determine empirically an industry classification of Dutch manufacturing that can be used for policy purposes. We use a two-limit tobit model with sample selection, which explains the decisions by business enterprises...

Primary enrolment rates are very high in Peru, but so are the failure and drop-out rates, especially beyond the primary level. Thus an analysis of child schooling should take account of the conditional sequence with the previous level and self-selection into the next higher level of schooling....