@chipwhitley posted the link to this WaPo article from 2009 early in the thread. It’s called “Fatal Distraction” and it’s a long and painful, well-researched and very important article about loving, responsible parents who have forgotten their child in a hot car. It may be beyond a paywall for most and it doesn’t have a “gift article” option, so I’m going to quote in two posts what I think are very important points for everyone to know.
1) What happens in the brain that causes a loving parent to forget their child is in the car.
2) The reason we have trouble understanding how on earth a loving parent could ever forget their child.
Starting with number one, the brain and the memory:
“Memory is a machine,” he says, “and it is not flawless. Our conscious mind prioritizes things by importance, but on a cellular level, our memory does not. If you’re capable of forgetting your cellphone, you are potentially capable of forgetting your child.”
[David] Diamond is a professor of molecular physiology at the University of South Florida and a consultant to the veterans hospital in Tampa. He’s here for a national science conference to give a speech about his research, which involves the intersection of emotion, stress and memory. What he’s found is that under some circumstances, the most sophisticated part of our thought-processing center can be held hostage to a competing memory system, a primitive portion of the brain that is -- by a design as old as the dinosaur’s -- inattentive, pigheaded, nonanalytical, stupid.
The human brain, he says, is a magnificent but jury-rigged device in which newer and more sophisticated structures sit atop a junk heap of prototype brains still used by lower species. At the top of the device are the smartest and most nimble parts: the prefrontal cortex, which thinks and analyzes, and the hippocampus, which makes and holds on to our immediate memories. At the bottom is the basal ganglia, nearly identical to the brains of lizards, controlling voluntary but barely conscious actions.
Diamond says that in situations involving familiar, routine motor skills, the human animal presses the basal ganglia into service as a sort of auxiliary autopilot. When our prefrontal cortex and hippocampus are planning our day on the way to work, the ignorant but efficient basal ganglia is operating the car; that’s why you’ll sometimes find yourself having driven from point A to point B without a clear recollection of the route you took, the turns you made or the scenery you saw.
Ordinarily, says Diamond, this delegation of duty “works beautifully, like a symphony. But sometimes, it turns into the ‘1812 Overture.’ The cannons take over and overwhelm.”
By experimentally exposing rats to the presence of cats, and then recording electrochemical changes in the rodents’ brains, Diamond has found that stress -- either sudden or chronic -- can weaken the brain’s higher-functioning centers, making them more susceptible to bullying from the basal ganglia. He’s seen the same sort of thing play out in cases he’s followed involving infant deaths in cars.
“The quality of prior parental care seems to be irrelevant,” he said. “The important factors that keep showing up involve a combination of stress, emotion, lack of sleep and change in routine, where the basal ganglia is trying to do what it’s supposed to do, and the conscious mind is too weakened to resist. What happens is that the memory circuits in a vulnerable hippocampus literally get overwritten, like with a computer program. Unless the memory circuit is rebooted -- such as if the child cries, or, you know, if the wife mentions the child in the back -- it can entirely disappear.”
<snip>
British psychologist James Reason coined the term the “Swiss Cheese Model” in 1990 to explain through analogy why catastrophic failures can occur in organizations despite multiple layers of defense. Reason likens the layers to slices of Swiss cheese, piled upon each other, five or six deep. The holes represent small, potentially insignificant weaknesses. Things will totally collapse only rarely, he says, but when they do, it is by coincidence -- when all the holes happen to align so that there is a breach through the entire system.
