The final chapter of Duhigg’s The Power of Habit discusses neurology and personal responsibility. Once again, he uses two powerful examples to make his point.
One example is of a man who killed his wife while experiencing sleep terrors (a slightly less conscious version of sleepwalking). Scientific and circumstantial evidence showed that this man had no intent to kill his wife, and that he was simply following a deeply ingrained habit – fight or flight – and was left with a deep sense of guilt. Not only was he found not guilty, the judge attempted to console him.
The next example was of a woman who developed a habit of compulsive gambling, declared bankruptcy and moved to another state to avoid casinos, but was drawn back in by predatory marketing and grief over the loss of her parents – which ended up in the loss of her $1 million inheritance.
A study of the neurology of problem gamblers showed that their brains showed the same reward reaction to near wins as they did to wins, whereas other gamblers correctly interpreted near wins as losses. This showed up in the brain stem and basal ganglia, the same areas as sleep terrors. Further, people who have taken medication that affects these areas have been found not to be responsible for sudden binges of gambling, eating, shopping, etc. So should all problem gamblers who exhibit this deterioration be excused for their actions?
Duhigg says no:
We can choose our habits, once we know how. Everything we know about habits, from neurologists studying amnesiacs and organizational experts remaking companies, is that any if them can be changed, if you understand how they function.
However, to modify a habit, you must decide to change it. You must consciously accept the hard work of identifying the cues and rewards that drive the habits’ routines, and find alternatives. You must know you have control and be self-conscious enough to use it…