Here I finally found it - some scientific research of what I have been trying to say........ being selfish (or selfless) is in our genetic make up (our inner blue print - DNA), and not just a social thing.

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Are Women Less Selfish Than Men?: Evidence From Dictator Experiments

Research in social sciences other than economics indicates substantial differences in behavior between men and women. The general conclusion drawn from this work is that women will be more socially-orientated (selfless) and men are more individually-orientated (selfish).

http://www.blackwell-synergy.com/doi...urnalCode=ecoj

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Hmm- not what do we do with this?