Also, sitting on a losing trade uses up time, money and mental capital.

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In response the government's chief scientific adviser, Professor John Beddington, said mental capital could be likened to a bank account of the mind.

BBC: Skills drive risks mental health

Grab a cup of coffee (if there is a cafe) and acquaint yourself with the myriad services to be had, and the mental capital of the reference librarians.

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It's certainly true that we produce in order to consume, but since no entrepreneurs exist without capital, it could be argued that our obsession with cosmetic and mental wellness subtracts from the base of capital in economically harmful ways.

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This study claims it is subconscious mental accounting, whereby investors view dividends and capital gains in two completely separate buckets.

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After less than four hours of deliberation on Tuesday, the same jury rejected the mother's claims that mental illness led her to kill her children and found her guilty of capital murder.

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