The actual studies by Kahneman and Tversky mentioned at the start are more interesting and solid than this handful of anecdotes. If you're not familiar with them, they might well be one of the most important things you've ever Googled for.

The results: people weigh losses and gains with "1) a value function that is concave for gains, convex for losses, and steeper for losses than for gains, and 2) a nonlinear transformation of the probability scale, which overweights small probabilities and underweights moderate and high probabilities." This does little to convey the soul-crushing horror you will feel when you see these preferences demonstrated experimentally.