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The more economically dependent a man is on his female partner, the more likely he is to cheat on her, according to new research.

Schools have the ability to drastically reduce cheating among their students - all they need to do is follow the relatively simple and inexpensive solutions suggested by research.

""Experiments with amoebae that usually live as individuals but must also join with others to form multicellular bodies to complete their life cycles showed that cooperation depends on kinship. If amoebae occur in well-mixed cosmopolitan groups, then cheaters will always be able to thrive by freeloading on their cooperative neighbors. But if groups derive from a single cell, cheaters will usually occur in all-cheater groups and will have no cooperators to exploit. A multicellular body like the human body is an incredibly cooperative thing," Queller says, "and sociobiologists have learned that really cooperative things are hard to evolve because of the potential for cheating. "It's the single-cell bottleneck that generates high relatedness among the cells that, in turn, allows them to cooperate, " he says."