Monday Evening News and Views

* Five core principles of trading psychology;

* Thanks to some alert readers for this article on testosterone and risk;

* Underemployment hits 20%;

* What's strong and weak among ETFs;

* Stalemate over aid to Greece;

* Frontier markets finding favor;

* Private company debt trading cheaper than U.S. debt;

* Continued economic growth, with modest housing recovery;

* Red flags for bubble in China.

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