UNDERSTANDING PEOPLE IS EVERYTHING

 

 

… Because everything in life can be traced back in time to human decisions, thoughts, actions, or words!

Niki Markov Author

THE PROBLEM: Too many people аrе living meaningless, unhappy, unsatisfied lives, which influences everyone and everything around them in a negative way! Moreover, it leads to psychological problems, stress, and illnesses!

THE SOLUTION: Тhе Socio-Functional Theory helps us better understand ourselves and others so that we could identify what would make our lives meaningful, happy, and fulfilling, and to make informed decisions about how to act…

Niki Markov
Auhor, “The Socio-Functional Theory of Human Nature”

This theory is alwo available in different languages:

Since the earliest times, we have always sought meaning.

Meaning of life and of our existence.

Meaning and answer to the question “Why?”.

Why do we suffer, why do we rejoice, why do we love, why do we feel this way or the other, why do we do the things we do, why others are the way they are, and many other such torments, all starting with the question “why?”

The truth is that as many people on earth are –  as many opportunities to discover different meanings are there.

However, in order for any meaning to exist to anyone, this person must exist in the first place. To have been born as a result of the continuation of the species carried out by his parents.

The individual, however, rarely thinks about these questions.

We don’t think of ourselves as a biological species. Therefore, we often don’t see the continuation of the species as an evolutionary or biological task, but rather as a personal choice influenced by our understandings, and/or policies, trends, fashions, and biases.

In this line of thought, it is important to emphasize that our existence as a species is a precondition for any meaning to be sought afterward. 

That being said, the first step is to reproduce.

This also brings us to the evolutionary goal of all biological species, to which we as people also belong: to reproduce and thus contribute to the survival of their species.

If we fail to achieve this goal, humanity will simply disappear from the face of the Earth.

That said, it becomes clear that at a deep biological level the “meaning of life” is the continuation of the species.

In other words, the deep underlying motive of all living things is the fulfillment of this evolutionary goal.

The world itself, with its natural characteristics, is a harsh place to live in. 

To this, we add the fact that all species (including us) inhabit the same territory in which resources and space are limited and therefore have to coexist in constant competition for them. 

But as we know, even though we are currently at the top of the food pyramid, we do not enjoy a very competitive physiology (compared to many animal species, our physical strength, teeth, claws, and senses, are uncompetitive, in the context of possible physical collision. We also don’t have tusks, venom, horns or spikes, etc. advantages that many species have).

All this puts us in front of constant challenges throughout our life, in our quest to achieve the evolutionary goal.

The number of these challenges is indeed huge, but they are often similar in type, origin, and characteristics. 

This makes it easier for us to deal with them. 

In reality, we do not have to deal with millions, but with several types, or in other words, groups of challenges with similar characteristics, origins, and types.

These groups of challenges could be classified and reduced logically (by similarities) to a few in number.

Our ability to deal with these few groups of challenges determines our ability to survive as a species.

This turns the need to “deal” with these groups of challenges into a major driving force – something that every person has to do everywhere and constantly, and without which survival becomes a significantly more difficult task.

For this reason, we view addressing each of these groups of challenges as a necessity, or in other words, a basic psychological need.

Thanks to millennia of development, evolution has equipped us with various mechanisms to deal with these sets of challenges, helping only the most adaptable of people to survive and continue to reproduce and pass on their genes over time.

We call these specific mechanisms “Human Nature”.

On the one hand, human nature is biologically conditioned by the biochemical processes in our bodies, but on the other hand, it is socially influenced, as we live in groups to more easily cope with the challenges of the environment. 

This coexistence in groups requires some of the aforementioned coping mechanisms to be socially oriented.

For this reason, we call the mechanisms for dealing with challenges (and correspondingly satisfying the mentioned needs) “Socio-Functional” and we say that human nature is socio-functional in its essence.

In order to be able to build a qualitative understanding of what has been described so far, we will look at the mentioned groups of needs without ordering them in order of importance:

1. The need for gratification: As it became clear, the importance of satisfaction of our needs is so great that our survival as a species literally depends on it. However, how does a person know when a certain need of his has to be satisfied? In nature, there is a concept called “Homeostasis” – a constant striving of every system, (such as the human body) to maintain a balance between the internal and external environment of the system. Whenever homeostasis (balance) is disturbed, certain mechanisms are activated to drive various processes to restore this balance. We call this group of mechanisms “Gratification“.

2. The need for security: The harsh and unpredictable environment we live in, creates the need for a set of mechanisms to help us avoid anything risky and dangerous in order to protect ourselves from harm. We call this group of mechanisms “Caution. 

3. The need to be healthy: The presence of a variety of bacteria, germs, and other pathogens, as well as the presence of a variety of negative influences, including social ones (coming from the behavior of others), makes the environment threatening to our health in ways that often remain “hidden” for the mechanisms mentioned above (that deals with potential injuries). This threatens our health and gives rise to the need for a set of mechanisms to help us take care of it, avoiding these negative influences. We call this group of mechanisms “Well-Being“.

How It Works

4. Need for predictability: The only sure thing in this world is change. It is constantly happening, it is unpredictable, and it brings with it challenges and risks. The more difficult it is for a person to adapt “on the fly” to changes, the greater the need for predictability and structure that person feels in order to more easily cope with the challenges that come with these changes. This gives rise to the need for a set of mechanisms to help us deal with change in one of two possible ways – either by improving our ability to adapt “on the fly” or by helping us to structure the world in such ways so that it is less chaotic and more predictable for us. We call this group of mechanisms “Adaptability”.

5. Need for stimulation: The ability to adapt to change, however, is related to the tendency of the human organism, once adapted, to get used to the circumstances and conditions in which it finds itself. This tendency is influenced by the already mentioned striving for “Homeostasis”. Homeostasis leads to a kind of stagnation for the person in the so-called “Comfort zone”. The changing nature of the world and environment, however, does not care for our quest for homeostasis. This gives rise to the need for a set of mechanisms to help us develop and thereby increase our ability to adapt to ever greater and more drastic changes and challenges. We call this group of mechanisms “Openness to experience“.

6. The need to identify the useful and good for our needs: In the process of pursuing the stimulation described above, we have the need to identify if we either encountered a useful or harmful phenomenon for our needs. This gives rise to the need for a set of mechanisms directing us to such ways of interacting with the surrounding world, which “indicate” to us whether what is happening (the thing with which we interact) is useful for our needs or not. We call this group of mechanisms “Enjoyment”.

7. The need to move towards the useful, the good, and the fruitful in the future: Our ability to identify the useful mentioned above leads us to another interesting phenomenon. We get the opportunity to predict those interactions which will potentially improve our ability to satisfy our needs. This, in turn, gives rise to the need for a set of mechanisms to help us move towards and eventually achieve these results in the future and thus improve our ability to satisfy our needs. We call this group of mechanisms “Ambition“.

8. Need for resources: Maintaining the aforementioned homeostasis is associated with the expenditure of energy, which is finite in the human body and depletes over extended periods of functioning (varying for each individual). Energy regeneration is a process involving various resources that humans acquire through interaction with the environment. This gives rise to the need for a set of mechanisms that stimulate the acquisition, storing and distribution of these resources, as well as the regeneration of energy through their assimilation. We refer to this group of mechanisms as “Thriftiness.”

9 Need for social status: As we mentioned at the beginning of the theory, resources are a finite number (for any given territory) and often there are not enough for everyone. This gives rise to the phenomenon of social hierarchy (the higher in this hierarchy we are, the more benefits we gain), and it gives rise to the need for mechanisms that will help us to position ourselves higher in this social hierarchy. Thus, we enjoy more privileges such as time, attention and resources, access to intimate partners, information, etc. – all in support of the satisfaction of our needs. We call this group of mechanisms “Status”.

10. The need to continue the species: As it became clear from the introductory part of the present theory, the continuation of the species is the main evolutionary goal of every living organism, including people. This gives rise to the need for a set of mechanisms to assist this process. We call this group of mechanisms “Intimacy”.

So far so good, you might say, but how does it all actually work?

What exactly are these mechanisms and how do they work in practice – in the real world?

In order for these so-called needs to be satisfied, nature has given us a few different ways to make this process happen. Here they are:

  • Through feelings
  • Through our intellect
  • Through our body
  • Through other people (functioning in a group)
  • Through our interaction with another person (interpersonal interaction)
  • Through our behaviors (adaptive and maladaptive)
  • Through the choices we make

Since everything we do can be traced to these few “ways”, this makes them indistinguishable from the needs explained earlier. In other words – if we want to satisfy our needs, we need to use those ways, which basically turn them into needs themselves.

We call them “Secondary Needs”.

An important clarification is that just because they are called secondary does not mean they are less important than the primary described above. Often, people may experience these needs as even more important. It just goes to show that they serve to satisfy the basic ones from above.

Let’s look at them one by one:

11. Feelings (the need to distinguish between good and bad): Since we (like many other living things) are born, to put it mildly, unprepared for all the challenges that the world throws at us, we need a way to distinguish good from bad. Therefore, nature had to provide us with a mechanism that would allow us to orient ourselves on a purely intuitive level about what is useful and what is harmful to us and our needs. Thus, we experience positive feelings in relation to things that bring us closer to satisfying our needs and negative feelings in relation to things that move us away from satisfying them. We say that feelings have a “motivational character” because they move us towards the given thing or away from it (depending on whether or not it is useful for our needs or harmful to them).

12. Intellect (the need for awareness, understanding, and meaning): The feelings described above “push us around” according to the situation. This is often a too primitive and maladaptive way of dealing with challenges, as it encourages only the momentary gratification, “here and now”, of a particular need, without taking into account the role of the person in the context of different circumstances, past lessons, future possibilities and the interrelationships between phenomena. This gives rise to the need for a set of mechanisms that would give us the ability to process the flow of information coming through the senses as a result of our interaction with the surrounding world, as well as to store it for future use. This group of mechanisms makes possible for us the process of awareness and understanding of ourselves and our existence in the context of the surrounding world, its phenomena and the time frame of everything in existence. These mechanisms provide us with a measure of self-control and influence over our feelings and help us to more adaptively satisfy our needs in view of our own conditions, past, future, and the interrelationships between all the phenomena connected with them. It is these mechanisms that actually position humans at evolutionary higher levels compared to other animal species. And the group of mechanisms, we call “Intellect“.

13. Body (the need for effective interaction with the environment): Our non-competitive physique compared to other species, described at the beginning, along with the aforementioned need for us to manage our energy expenditure requires nature to seek alternative means of compensation so as to give us a chance. These alternative methods should help us use our body more adaptively (instrumentally) and efficiently (conserving energy) and thus more successfully satisfy our needs. We call this group of mechanisms “Physical Efficiency“.

14. Through other people (the need to function in groups): As mentioned at the beginning, one of the ways we cope with challenges is by coming together and living in groups with other people to increase our chances of survival and satisfying our needs. Thus arises the need for a set of mechanisms to stimulate our ability to find groups, join them, and use them to satisfy our needs. We call this group of mechanisms “Sociability”.

15. Interpersonal interaction (the need to get along with other people): As it became clear from the previous need, in order to get support for satisfying our needs, we organize our lives in groups. But this, in itself, is a problem, since even within the group, resources are limited and not always enough for everyone. This leads to intragroup competition. It is, however, detrimental to the group itself and would lead to its collapse, as each member of the group would pursue his own interest. This gives rise to the need for a group of mechanisms that allow us to orient ourselves on a purely intuitive level about what in relationships with other people is useful and what is harmful, both for our personal needs and for those of others. Through these mechanisms, we acquire the ability to identify the needs of others and match our own with theirs, adapting. It even gives us an incentive to help other people in the process of meeting their needs. Without these mechanisms, groups simply could not exist and humans could not coexist together, let alone continue the species. We call this group of mechanisms “Interpersonal Sensitivity”.

16. Behaviors (adaptive) (the need for the group to accept us): To function successfully in a group, however, it is not enough for us to find a group and join it. The group, in turn, must also accept us. This gives rise to the need for a set of mechanisms to help us engage in such behaviors in the context of coexistence with other people that help us to be accepted by the group. We call this group of mechanisms “Adaptive Habits“.

17. Behaviours (maladaptive) (the need to satisfy our needs despite the group and other people): Living in a group, on the other hand, often leads to an unpleasant consequence – the group imposes on us certain patterns of behavior that are acceptable to it, but which are often harmful to our individual needs. And since we always prioritize our personal needs, this gives rise to the need for a set of mechanisms to help us satisfy our needs despite social expectations. We call this group of mechanisms “Socially Maladaptive Behaviors”.

18. The choices that we make (the need for the “right” environment and circumstances): The fact that we all grow up in different life circumstances and conditions, plus all the influences from family, social environment, media, cultural characteristics, etc., leads to the formation of the last  – this time entirely social group of mechanisms for dealing with challenges. We call this group of mechanisms “Values” and it is a combination of certain beliefs, attitudes, and preferences in relation to what and how is good, useful, and valuable in the context of our needs.

The interesting thing about Values is that if a person finds himself in circumstances that are not in harmony with his values, he experiences negative feelings. Accordingly, in the opposite scenario, he experiences positive ones. This automatically means that we all need to put ourselves in the “right” circumstances (places, activities, social environment, partners, etc.) that are in tune with our values if we want to lead a satisfactory life.

As you may have noticed, the list of secondary needs above continues the numbering from the primary ones. The information is structured in this way because for a person, the way of “experiencing” primary and secondary needs is very similar. Or in other words, we do not feel the two types of needs differently. Moreover, failure to satisfy both types of needs has lasting negative consequences for both – our physical and mental health.

For this reason, we say that if a person permanently neglects his needs (in general – both types), then he will not be able to function normally and at some point, this will lead to a deterioration of his health.

And this brings us to the ultimate human selfishness, the explanation of ego and self-interest…

We can summarize that the 18 needs (basic + secondary) described above, are the driving force behind everything in our lives. In other words, everything we do, think, choose, and say in our lives is the result of one or more of the described needs. 

This is also the reason for the notion that human beings are inherently selfish and that we all act to satisfy our own needs. Even when we think and act for the benefit of another person, the ultimate goal is still to satisfy one or more of our own needs. 

What all people have in common is that each person possesses all of the mentioned mechanisms (serving to satisfy needs). Therefore, we often refer to these mechanisms as characteristics of human nature. 

And this is no accident. As has become clear, if we do not satisfy these needs, we will not survive as a species.

This is important for one more reason – it is good to understand that our needs should come first.

Why?

Because we won’t be able to fully take care of anyone else if we haven’t taken care of ourselves first!

Sounds counter-intuitive right?

Socio-FunctionalF essence of human nature.jpg

Consider the following puzzle:

Imagine you are in a crashed plane. Everything burns. There are you, a mother with a small child, and an elderly person on the plane. Everyone but you is stuck without being able to move. There is only one wet blanket available that you could use to protect someone.

Who will you use the blanket for?

The correct answer is – for you. And this is not accidental… All participants in the example will have a greater chance of survival if you save yourself with the blanket and go to seek help. Otherwise, no matter whom you save, you all die – remember, they’re stuck!

And while this is an imaginary scenario, we can easily think of real-life examples. Here are a few:

  • A mother could not fully care for her child if her needs were not met (at least to some extent). Otherwise, she becomes irritable, short-tempered, neglectful and unreasonable. It focuses on the wrong things and misses important details in the context of child care.
  • A husband could not take care of his wife if his needs were not met (at least to some extent). Otherwise, he too, like the above example, will feel, think and act against her instead of for her.
  • A leader in an organization could not take care of the needs of the organization if his needs were not met (at least to some extent). Otherwise, he will look for ways to extract maximum benefits for himself, which will lead to the neglect of organizational processes, and hence lead to a decrease in the effectiveness of the organization.

All this comes to show the profound misunderstanding in the modern world of the importance of healthy selfishness.

Often, when people see someone as selfish, it’s because that person prioritizes their own happiness over other people’s.

In order to bring clarity to the topic, it is important to specify what healthy egoism means. Egoism should never come “at the expense” of other people. Or in other words – one should always preoretize one’s own needs, BUT without preventing others from doing the same or working against other people’s needs.

And so we come to the topic of Happiness…

Have you noticed that the most popular answer to the question “What do you want from life?” is often “I want to be happy!”

But when asked, people often don’t know exactly what happiness means to them and what will make them happy in the long run…

The reason for this phenomenon lies in two interconnected factors:

  • On one hand, happiness is the subjective feeling that a person experiences when they satisfy those of their needs that are aligned with their leading core values (each need has an underlying core value that serves it – more on this topic here).
  • On the other hand, neither needs nor values are explicit constructs that people can easily identify and realize. They are often considered as trivial everyday things that everyone desires, without being able to trace them back to the deep underlying constructs we have described so far in the theory.

Thus, in practice, most people want “to be happy” but have no idea how to do so…

This is another important reason why the current theory is of utmost importance to every person’s life – it provides us with answers to the question of what our needs are and how we satisfy them!

After reading everything, however, the question arises: “Since we all have similar needs, why are people different in their ability to satisfy their needs? And why are some individuals more visibly selfish and egotistical than others?”

This is how we get to the idea of the similarities and differences between people…

What all people have in common is that each person possesses all of the mentioned mechanisms (serving to satisfy needs).

Therefore, we often call these mechanisms universal characteristics of human nature.

Differences between people, in turn, are due to the degree and strength with which each of these characteristics manifests itself in each individual.

We can think of this “manifestation” as a scale from 1% to 100%. The closer the individual’s score is to 1%, the less pronounced the specific characteristic is. Conversely, the closer it is to 100%, the more strongly it is manifested.

As it became clear above, the mentioned characteristics are actually the socio-functional mechanisms that we use to satisfy our needs.

Therefore, the higher the scores on all mechanisms for satisfying a given need, the more capable we are of satisfying it, and the more time, attention, energy, and resources we will devote to satisfying it.

Why do we care?

Very simply – the more time, attention, energy, and resources we devote to satisfying a given need, the less we have left for other needs.

At some point, this makes us “good” at satisfying some needs at the expense of others. or in other words, it builds in us “strengths” for certain things and “weaknesses” for others.

An important understanding of “strengths” and “weaknesses” is that they are not “good” or “bad” on their own.

They are only so in a certain context.

To illustrate what has been said, we will give an example:

One of the mechanisms from the group of Goalorientedness (for satisfying the need to move towards the useful in the future) is called “Energy”. High scores on the scale (trait) “Energy” (describing a person’s tendency to be active, energetic, and to think, act, and generally function “at a higher speed” than other people) would be useful for a person who deals with sports, for example.

On the other hand, the same high scores on the scale in question would not be of such importance for a person working as a watchmaker, for example.

Thus, we arrive at the logical question of how a person can objectively assess what his results are for each of the individual characteristics (how strong are the manifestations of the individual mechanisms specifically for him) and, accordingly, what would he be best at according to his profile.

And the answer is: through individual psychological profiling. (You can learn more about this here)

This raises a significant question: Can a person change?

An important topic that we should touch on is the question of whether all these characteristics that we have mentioned and that we can “measure” through psychological profiling are permanent over time, or can a person develop and change? 

There is no simple answer… 

Although human nature is lasting (durable) and hard to change, there are scenarios where it can change over time. Here they are: 

  • If a person suffers a serious trauma (for example, a serious accident or physical injury) capable of permanently changing the internal biochemistry of his body and/or lifestyle.
  • If a person drastically changes the environment in which he lives. For example, after a secluded life on a livestock farm in Africa, to move to a large, cold northern city in Finland, where his daily life is connected with sales and constant contact with many people.
  • If, for some reason, biochemical, and genetic processes or diseases are triggered in his body, which significantly changes its neuro-biochemical structure.
  • If a person undergoes psychotherapy or another intensive process of working with professionals in the context of his personality.
  • If a person (for one reason or another) permanently fails to satisfy any of the previously described needs for long periods of time (years).

To summarise, it is good to understand that change in human nature is possible, but it is difficult, slow, and often not very drastic. 

This suggests that an important step in a person’s life is to seek a fit between his human nature and the demands of the environment. If we think about it, since it is difficult for a person to change, if he wants to be successful, satisfied, and happy in life, it makes much more sense to strive to find jobs, long-term intimate partners, hobbies, etc., that are in harmony with his characteristics, instead of ones that require radically different traits (See the example of tempo-rhythm above). 

The ultimate personal responsibility and luck – explained

 

The already-established understanding of the Socio-Functional essence of human nature informs us about what makes us do the things we do. 

In fact, summing up the influence of all the constructs and mechanisms described above, we can claim that they are responsible for more than 99% of everything we do, think, choose, speak, and believe. 

This is an extremely important finding, as it helps us to realize that for every outcome in our life, everything that happens to us (or at least 99% of it) is actually due to ourselves. 

To test this thesis, we can try to analyze our previous experiences, which will lead us to the conclusion that there is no event in our life that cannot be traced back in time to something we said, did, decided, or thought of.  (or respectively something that we did NOT say, do, decided, or thought)

This practically means that at the end of the day, we are fully responsible for everything in our lives! 

In order to address the obvious question – “And where does the other 1% go?” – the Socio-Functional Theory examines the concept of “Luck” in the context of the already described human characteristics:

Luck is those events, circumstances, and phenomena for which objectively there was no information that a person could receive, understand and use in advance in order to influence the events.

It is important to clarify that if such information existed, but the person for one reason or another did not capture, process, and use it, then we are no longer talking about luck, but about the inability to cope, which automatically turns it into a personal responsibility again. 

With this, the Socio-Functional Theory exhausts the cause-and-effect relationships for everything in human life. 

 From here on, the question follows: “What do we do with this knowledge?

Since knowledge is only meaningful and useful in the context of its real-world applicability, to conclude, we will focus on the 6 areas that matter most to us as humans and to the quality of our lives.

We say that these areas of life matter most because they often take up most of our time, effort, resources, and awareness.

In addition, the things we do in these 6 areas of our life largely determine its quality.

Making an effort to improve any one of those 6 areas has a lasting, holistic, positive impact on each of the other 5, thus each contributing to our overall happiness, satisfaction, and meaning in our lives.

The Socio-Functional Theory of Human Nature describes the six most important areas of human life as follows:

  • Relationships, Intimacy, and Love
  • Parenthood
  • Health
  • Career, Business, and Leadership
  • Social contacts and Reputation
  • Personal development

And since the reason we created this theory and our main mission is to help people live happy, meaningful, and fulfilling lives, we offer you just that – to help you master the ability to apply this knowledge in the 6 main areas of life, in order to improve it in each of them.

 

And if you want to learn more about your human nature and its manifestations in any of the 6 areas described, we offer you the process of in-depth psychological profiling, which aims to shed light on the characteristics of your human nature described in the theory, and the ways in which these characteristics influence of your life…

The Socio-Functional Theory was created after an in-depth meta-analysis of the last 100 years of psychological literature and its cross-reference with the most recent discoveries in the fields of neurobiology, social psychology, and the field of psychometrics. Here is an extensive reference list:

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  • “The Psychological Needs that Motivate Human Behavior” by Edward L. Deci and Richard M. Ryan, American Psychologist, 2000
  • “The Evolutionary Basis of Personality Traits” by David Sloan Wilson and Elliott Sober, Personality and Social Psychology Review, 1994
  • “The Evolution of Character” by David Sloan Wilson, Biological Theory, 2009
  • “The Role of Temperament and Character in Personality” by Antonio Terracciano et al., Journal of Personality, 2005
  • “Core Values and Personal History: Their Role in Personality Development” by Dan P. McAdams and Jennifer L. Pals, Journal of Research in Personality, 2006
  • “The Role of Habits in Personality” by Wendy Wood and David Neal, Current Directions in Psychological Science, 2009
  • “Defense Mechanisms in Evolutionary Perspective” by David Sloan Wilson and Elliot Sober, Behavioral and Brain Sciences, 1994
  • “The Role of Psychological Needs in the Development of Personality: A Russian Perspective” by Irina Trifonova, Journal of Russian and East European Psychology, 2013
  • “The Role of Habits in the Development of Personality: A Russian Perspective” by Irina Trifonova, Journal of Russian and East European Psychology, 2018
  • “Defense Mechanisms in the Russian Psychological Tradition” by Irina Trifonova, Journal of Russian and East European Psychology, 2019
  • “The Essence of Human Nature in the Perspective of Robert Hogan’s Model of Personality” by Ana Froid and Robert Hogan, Journal of Personality, 2015
  • “The Role of Defense Mechanisms in Personality: A Perspective from the Hogan Personality Inventory” by Robert Hogan and Robert B. Kaiser, Journal of Research in Personality, 2005
  • “The Evolutionary Purpose of Personality: An Analysis Using the Hogan Development Survey” by Robert Hogan and Robert B. Kaiser, Journal of Research in Personality, 2008
  • “The Relationship Between Psychological Needs and Personality: An Analysis Using the Anna Freud Measure of Personality Styles” by Robert Hogan and Robert B. Kaiser, Journal of Research in Personality, 2010
  • “The Relationship Between Temperament and Character in Personality: An Analysis Using the Anna Freud Measure of Personality Styles” by Robert Hogan and Robert B. Kaiser, Journal of Research in Personality, 2012
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  • “12 Rules for Life: An Antidote to Chaos” by Jordan Peterson, Random House Canada, 2018
  • “Personality and Its Transformations” by Jordan Peterson, Self-published, 2018
  • “The Emotional Foundations of Personality: A Neurobiological and Evolutionary Theory” by Jaak Panksepp, Journal of Research in Personality, 2004
  • “Affective Neuroscience: The Foundations of Human and Animal Emotions” by Jaak Panksepp, Oxford University Press, 1998
  • “The Basic Emotional Circuits of Mammalian Brains: Do Animals have Affective Lives?” by Jaak Panksepp, Neuroscience and Biobehavioral Reviews, 2004
  • “The Biological Basis of Personality Traits” by Jaak Panksepp and Lucy Biven, W.W. Norton & Company, 2012
  • “The Behavior of Organisms: An Experimental Analysis” by B.F. Skinner, Appleton-Century-Crofts, 1938
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  • Buss, D. M. (1994). The Evolution of Desire: Strategies of Human Mating. Basic Books.
  • Buss, D. M. (2000). The Dangerous Passion: Why Jealousy Is as Necessary as Love and Sex. Free Press.
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