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What has changed the structure of the modern human brain more - biological evolutionary processes or cultural environment? Is it still relevant to compare human cognitive abilities with the work of a computer that processes information? And is the accessible Internet dangerous for our memory? Psychologist Maria Falikman answered these questions in her lecture on the nature of human cognition.
The brain as a computer and the beginning of cognitive science
What makes a person a person? There have been many attempts to answer this question in the history of philosophy and psychology. There is a line that stretches from Blessed Augustine to the great Russian physiologist Ivan Sechenov and to modern psychologists who believe that a person is made a person by will, or the possibility of free choice. For the rationalist philosophers headed by René Descartes, the specificity of man is the ability to think and be aware. Domestic classic Lev Vygotsky believed that people become a person through control of themselves and their knowledge with the help of special psychological tools. One of his followers, the modern psychologist Michael Tomasello, believes that a person becomes a person, sharing goals and intentions with others, sharing information with others, etc.
When psychology tries to explain what a person is, it has the opportunity to go along several paths. She can explain the psyche, proceeding from its laws, focusing on the principle of closed mental causality proclaimed by the founding father of psychology, Wilhelm Wundt. He may try to reduce the essence of a person to biological principles (primarily the features of the brain) or to the laws of society. And psychology can gracefully wriggle out and say that each of the factors contributes to the formation of the human in a person.
When psychology first appeared as a science in the last quarter of the 19th century, it started with the use of metaphors, comparing human consciousness now with the field of vision, where there is focus and periphery, now with a stream that is continuous, unique , etc. years, another interesting metaphor arose, which was invented by the creator of the architecture of the modern computer, John von Neumann. In 1948, during a speech at a symposium on brain mechanisms of behavior, von Neumann said that
Now such a comparison seems trivial, but then, as historians of science later wrote, it smelled of science fiction.Since the human brain processes information, then, most likely, the human brain is a kind of computer. In this case, the human psyche is the processing of some information, which means that it is possible to describe cognition in the language of computer programs.
The so-called cognitive revolution has begun. In the 1930s and 1940s, computers and computer science were actively developing thanks to the works of Alan Turing, the same John von Neumann, Claude Shannon, Norbert Wiener. They all began to ask a logical question: when computers become more advanced and we create an artificial intelligence, how will we know that we have created it? What does a computer understand in general when it processes information, how does it solve problems, how does it achieve its goals? But it turned out that psychology does not know how a person does it. Cognitive psychology tried to answer these questions, starting from the assumptions dictated by the metaphor of John von Neumann and considering cognition as the processing of information (that is,
In the middle of the 20th century, it was believed that the structure of the brain is not particularly important for understanding cognition, but at the turn of the 20th - 21st centuries, everything changed. After the cognitive revolution, attempts were made to describe human cognition in the language of engineering systems. However, it turned out that
if we drive a person into specific experimental situations, then often his behavior is not predicted by what the model dictates. His memory works differently from the memory of a computer; he makes decisions differently from the machine.
Man is not a computer
In the 1970s, autobiographical memory researcher Elizabeth Loftus discovered that people's memories of an event are highly dependent on how the person is questioned about the event. For example, if you ask how fast the car was going until it hit a post, the person is likely to actually remember that the car hit the post, when in fact it collided with another car. That is, by asking, we are actually able to form memories.
In 2002, Daniel Kahneman received the only still for psychologists Nobel Prize (Kahneman - Nobel Prize in Economics in 2002 "for the use of psychological techniques in economics, in particular - in the study of the formation of judgments and decision-making underty." - NB. T&P ). He found that a person makes decisions not as a rational subject, but depending on the context or "frame" in which the information is presented. It turned out that our cognitive system is far from a computer that processes information according to certain rules.
Why is our cognitive system wrong? For example, when, in the illusion of Roger Shepard, it seems to us that the distant monster is larger than the close one, although in fact they are absolutely identical. Or, like in the famous story, when we watch the players passing the ball to each other and count the number of passes, but we completely ignore the gorilla walking across the screen in front of our eyes. Okay, us, but why don't experienced radiologists see the same gorilla in the lungs when they look at patients' images for pathology?
We may be wrong when our cognitive system simply does not cope, for example, in an environment in which it has never been before. Perhaps this is due to the fact that in this way we build the contents of our own psyche, preparing or expecting to perceive one thing and not the other. Another likely cause of our mistakes is evolutionary. Modern cognitive biases theorists David Bass and Marty Hazelton tried to follow this path, who suggested that cognitive errors are a consequence of a shift in the criterion on the basis of which we make decisions in an evolutionarily preferable direction.
Bass and Hazelton extend this theory to a fairly wide range of phenomena - for example, xenophobia and even the assessment of sexual partners.Which is better in terms of survival - mistaking a snake for a stick or a stick for a snake? Experiments show that people tend to recognize a stick as a snake, that is, give a false alarm.

Vygotsky and Man in a Changing Culture
But the world in which we live now has nothing to do with the world for which biological evolution prepared us. So, in all likelihood, our cognitive system to a much greater extent depends not on the mechanisms that have developed in biological evolution, but on culture. It was this idea that was first expressed in the 1930s in the works of Lev Vygotsky, the author of cultural-historical theory. He suggested that
A newborn child cannot control his memory and attention, for this he needs just these psychological tools - cultural means that can only be taken from the external environment, from interaction with those who have already learned this. The development of higher mental functions follows the path from external to internal, that is, with age we use less and less external means of memorization, attention control, etc., and more and more - internal.our psyche, in contrast to the psyche of animals, is characterized by the use of a special kind of psychological tools that a person can use to control his psyche in the same way as instruments of labor to control nature.
However, culture began to develop not in the way that Vygotsky had expected. Cognition management tools began to be taken out and delegated to modern high-speed technical devices that take on the function of reminding, directing attention, solving problems, etc. Modern philosophers Andy Clarke and David Chalmers even proposed the so-called concept of extended cognition - not to draw boundaries between the two. what happens in a person's head, the tools of cognition that he uses from the outside, and the environment in which all this unfolds.
Can we say that this is where human cognition ended - that, for example, we no longer need memory, because now we can store everything in a computer? Judging by the fact that memory was buried when both writing and printing appeared, the Internet is not afraid of it either. Can we say that we no longer need thinking, that our cognitive functions can be delegated to high-speed computers? Judging by the results of studies of human memory, there really is no longer a boundary between what is in our head and what is happening in the outside world.
Moreover, not only the ways of dealing with one's own memory are changing, but also its assessment. For example, if a person solves problems of recall and has the opportunity to go online, in a post-experimental interview he rates his memory higher than someone who was not allowed to look for an answer on the Internet.We tend to recall not the information we found, but the place or query by which we found it.
Neuroarcheology and brain plasticity
Modern cognitive science comes to the conclusion that it is meaningless to study human knowledge as an established, formed, ready to use even in the context of culture: a person develops, culture develops, new practices and sign systems constantly appear. It is the developing person in the developing culture that needs to be studied. How to do it? From a methodological point of view, the most interesting answer to this question is not even a psychologist, but an archaeologist of Greek origin Lambros Malafuris. He develops the methodology of neuroarcheology - the reconstruction of the peculiarities of the work of the human brain and psyche based on artifacts from archaeological excavations. From his research, it becomes clear that it is impossible to separate the biological evolution of the brain, the evolution of cognitive functions and cultural practices. The owner of a certain psyche creates a certain cultural environment around him. The cultural environment, in turn, gives preference to the owners of a certain brain, carriers of certain mental functions that create a cultural environment, etc.
It turns out that our brain is not a biological object, it is a bio-artifact and was created by culture no less than biological evolution. Culture creates functional systems of the brain and its structural features, which will be fixed in evolution for a long time. The main idea of modern theorists is that it is not the human cognitive system as such, not memory, not attention, and not thinking as such that evolves, but the readiness of these systems to change or develop. Evolution chooses those with the most plastic brains.