The proportion of the world’s population living in urban areas is increasing rapidly, with the vast majority of this growth in developing countries. As growing populations in urban areas demand greater food supplies, coupled with a rise in rural to urban migration and the need to create...

Sensitive research issues call for anonymous questionnaires. This makes accurately matching pretests with posttests difficult or impossible. Various subject-generated coding schemes have been developed, but their accuracy has been unknown. This anonymous study, with 745 students, used...