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* Endowment Effect ... This is one of the interesting biases that we usually are unaware of. It is more to do with the fact that we tend to overvalue things that we own or thoughts/beliefs that we stick to. For example, folks believe that the stocks they own are more valuable than what they really are worth.

* Status Quo Bias ... In simple word ... "Inertia". We inherently prefer to let the situation continue the way it is. We avoid changing our life significantly.

* Mental Accounting ... This is one of the very funny & interesting behaviours. Due to our mental compartmentalization, a dollar in Savings account is differently valued to a dollar associated with a stock. For example, lets say that your back deducts say $100 from Savings account as some bank fees. On the hand you lose $100 in your stock due to the stock going down. If you note you will be more pained by the fact that your bank deducted $100 from your Savings account than the pain associated with your stock.

* Firehouse effect ... Firemen with much downtime who talk to each other for too long come to agree on many things that an outside, impartial observer, would find ludicruous.

* Snake bit effect ... A dollar loss is twice has painful as a relative dollar gain.

* Black Swan Effect ... This is to some extent alludes to the fact that we are so blinded that we forget that one black swan event can wipe our your financial status.