Small, self-serving lies change our brain and make us more likely to lie for personal gain
It really is like a slippery slope. Like much deception research these days, this project used fMRIs to scan participants brains while they lied. First they told small lies and their brain’s amygdala lit up. As they told additional lies the amygdala became less bright as their brain got used to lying. This study was published in Nature Neuroscience which is not open access but you can read a summary of the work over at Medical News Today.
Misleading ourselves to better mislead others