Diversification is the norm. Very few people collect all their income from any one source, hold all their wealth in the form of any single asset, or use their assets in just one activity. Multiple motives prompt households and individuals to
diversify assets, incomes, and activities. The first set of motives comprise what are traditionally termed “push factors”:
risk reduction , response to diminishing factor returns in any given use , such as family labor supply in the presence of land constraints driven by population pressure and landholdings fragmentation,