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Slice is exhibiting mental accounting by having separate accounts for his assets which he manages each account separately for a specific purpose and does not manage his assets as a complete portfolio for asset allocation purposes. He is also exhibiting loss aversion by not accepting the loss on the stock which is also leading to risk seeking behavior by buying more of the losing stock. Loss aversion is similar to fear of regret which also results in holding onto loser too long because you regret selling at a loss, but fear of regret does not lead to risk seeking behavior as loss aversion can. Also fear of regret tends to lead to safer investments and undiversified portfolios as can be seen in mental accounting, too. Pyramiding is similar to mental accounting, but pyramiding is where a person layers their investments in the shape of a pyramid in which their most pressing and important needs are on the bottom layer in the most conservative investments. As one moves up the pyramid, investments move more towards equities and riskier investments until you get to the top which reflects investment for wish list type items. Money illusion deals with inflation and thinking that you have more money if your investments (or income) went up by the same amount as inflation.