Reddit reviews Beyond the Brain: How Body and Environment Shape Animal and Human Minds
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Used Book in Good Condition
> What is consciousness?
"Consciousness is the state or quality of awareness, or, of being aware of an external object or something within oneself. It has been defined as: sentience, awareness, subjectivity, the ability to experience or to feel, wakefulness, having a sense of selfhood, and the executive control system of the mind... In the majority of experiments that are specifically about consciousness, the subjects are human, and the criterion that is used is verbal report: in other words, subjects are asked to describe their experiences, and their descriptions are treated as observations of the contents of consciousness." These methods are obviously heavily biased towards humans, we can't just ask a chimpanzee if it self aware, we must infer it from their behaviours and how they interact with their physical and social worlds. Easier said than done.
> Are single celled organisms like bacteria, conscious?
No.
> How much up the evolutionary ladder do we have to go to start finding consciousness?
Evolution is not a ladder, there is no best species at the top of this ladder. Its more like a tree. In evolution, there can be many solutions to one problem. Take flight for example, insects, birds, and bats have all solved the problem of flight in different ways, with different combinations of traits, with different kinds of genes. The same is very likely true for consciousness and higher cognitive intelligence. We may very well find the exact gene(s) that make use conscious that does not mean that other species need those exact genes in order to be conscious too. Other species may solve the problem of consciousness in a different way than we have. If we look for species with characteristics that are exactly our own, well its like just looking for species with feathers and assuming they are the only ones that fly - you miss the bats and insects.
> How are humans able to make another conscious being?
We are not born conscious, it is a series of skills, traits, and abilities that develop during infancy and early childhood that lead to our conscious abilities. For example, children learn between the ages of 3-5 how to lie. Before this time period their brains are not developed enough to make the connection that their thoughts are distinct and different from other individuals thoughts. They think everyone knows what they are thinking, they can't lie. Some humans never develop the ability to be fully conscious, like severely autistic individuals. "Deficits occur in people with autism spectrum disorders, schizophrenia, attention deficit hyperactivity disorder, as well as neurotoxicity due to alcohol abuse."
Other animals can lie, and deceive if they want to. Are they conscious? its really hard to say. We have a couple of tests that give us a pretty good idea that other species exhibit consciousness. For example, the mirror test. You place an individual in front of a mirror with a dot on their body that they can only see looking through the mirror. If they touch the dot or look for the dot on their own bodies then they are making the link that the image in the mirror is themselves. Infants older than 18 months usually pass the mirror test, infants under 18 months don't. Other higher cognitive skills that have been observed in some species include object manipulation, tool making, multi-step problem solving, lying, sense of fairness, morals, ethics, and mourning the dead.
These animals in no particular order are: elephants, dolphins, birds like crows, ravens, or pigeons, pigs, all of the great apes, and some monkeys. Obviously we are talking about a really diverse group of species, species from many different and distinct evolutionary paths that are able to solve complex problems, communicate in complex ways, form complex social bonds, and importantly show signs of theory of mind, or consciousness. Generally speaking these animals function at a cognitive level similar to a 3-5 year old child.
The ethical question then becomes, if a chimpanzee can pass a mirror test, can be shown to have higher cognitive functions why do we deny them the basic rights we give to humans, when some humans including infants lack these skills? Should we keep these animals for our own amusement or instrument, we don't with ourselves but why is it ok with them? I won't comment on my opinion, but these are important ethical questions worth thinking about.
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I think it can be, and there is a rich history in psychological philosophy of declaring behavior a subject matter in its own right.
But, the psychological sciences are unique in that they are "loopy;" scientists, who behave, seek to understand the behavior of others. And this understanding reflects back on society, giving us new ways to view behavior, which in turn changes our behavior. So, yeah, there is always going to be bias. (This is not my idea, but Louise Barrett's, who wrote this book.
But, we have to remember that there has always been this bias, and we have progressed greatly anyway.
If you're interested in the study of behavior through a very pragmatic way, "behavior is a subject matter in its own right," I suggest you check out [radical behaviorism] (http://en.wikipedia.org/wiki/Radical_behaviorism#Natural_science), just to give you an idea about how behavior can be viewed as a natural science. (Note: no, the behaviorists aren't dead, and every day the view is given more and more credence).