Scientists have shown that words printed in larger font sizes elicit a stronger emotional response. A report, published in PLoS ONE, has show that reading all kinds of words -- positive, neutral or negative -- printed in larger fonts causes higher electrical potential in the brain than when words are printed in smaller fonts. Those increased voltages are experienced as more extreme, longer-lasting emotions.
The researchers suggest that our reaction to large words may be a result of an ancient, biological response, through which things that are larger subconsciously appear closer, and as such are treated with more caution. No word yet on how the brain responds to blinky text.