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There are a ton of books out there exploring left/right brain dichotomy. Among them one finds decent science based books, as well as books filled with pseudo-scientific mumbo jumbo. With this book I get the sense that the authors have observed that people like to be able to categorize people according to which part of the brain they appear to use the most, and then tried to come up with a novel divide. To their credit the authors do provide arguments for why the top/bottom brain perspective is better than the left/right brain perspective, but I am not convinced. Indeed I was a bit disappointed because when I bought the book I thought that the bottom brain referred to sub-cortical brain regions, such as the limbic system, brain stem, cerebellum etc, but no. One could read this book and not even realize that the brain consists of more than the cerebral cortex (full disclosure: I am a scientist studying the cerebellum).
The story that Stephen Kosslyn is trying to sell is that the dorsal (top) and ventral (bottom) part of the cerebral cortex (the top brain), are to some extent discrete systems performing different tasks, although he is also quick to point out that they constantly work together. There is definitely some truth to the top brain, bottom brain dichotomy. For instance, when we see something we typically use the dorsal stream to analyze movement whereas the ventral stream is used for identification. Still, this book goes way way beyond the evidence.
For example, the authors claim that people rely more heavily on one or both of these systems and depending on which parts of the brain someone uses, he or she is categorized as a mover (top+bottom), stimulator (top), perceiver (bottom), or adapter (context dependent use). It is said that movers are good, both at making plans and observing and adapting to the consequences. Stimulators meanwhile make plans and execute them but are insensitive to the consequences of their plans. Perceivers don’t make much happen but are good at observing what happens around them. To be logically consistent I guess that adapters should be terrible at making plans and terrible at observing what happens around them, but instead it is argued that their top and bottom brain activity is contextually dependent, as if that is not true for all people. I do not know of any evidence to support this idea except that people are different which is hardly a revolutionary observation.
I do not know of any evidence to support this idea except that people are different which is hardly a revolutionary observation. Readers of this book will almost certainly read about the different categories and think that they resemble one category more than the others, but this does not mean that the theory is accurate. People are experts when it comes to confirmation bias. Give people a general astrological description (e.g. in general you like being with people but sometimes you feel shy), and a high percentage will think that it is a good description of their personality. People generally do not seek to falsify such statements.
In sum then, I think that there is a possibility that this book has hit upon an interesting brain dichotomy which we may want to explore further. However, the claims made in this book are very far distanced from the scientific foundation. For the reader who wants a good introduction to the brain I recommend going for Incognito instead.
11 of 11 people found this review helpful
Would you listen to Top Brain, Bottom Brain again? Why?
I am planning to listen again because it offers excellent perspective in hiring employees. Everyone knows about the theory of right brain versus left brain - this book adds a new dimension that will improve teamwork and hiring success.
What was one of the most memorable moments of Top Brain, Bottom Brain?
The four examples of their theory in action was great. It showed the ways each type react when put in the same situations.
Have you listened to any of Christopher Hurt’s other performances before? How does this one compare?
Nope - great voice and tone.
If you were to make a film of this book, what would the tag line be?
Top & Bottom - the other halves of the brain.
Any additional comments?
Great read! Also, I had a question about the PDF so I emailed their website. One of the authors was back in touch with me within 6 hours. Thank you for their customer service!
6 of 10 people found this review helpful