Methodology Though our work is entirely based on the intersection between neuroscience – particularly over the past decade, and linguistic analysis (from computational linguistics) our methodology uses similar techniques to intelligence, personality, moral bias, and psychological bias testing, but we do so by constructing expression from the causality of the underlying organization of the brain (neurology) instead of deduction from from language alone. (Which has plagued psychology since its origin.)

Science consists of the process of incrementally discovering first principles(causes). We construct everything from chains of causality using first principles. It is a universal falsificationary logic.

The first cause and therefore first principle of human differences is sex differences. The second is degree of noetenic evolution (resulting in race) as neoteny is the direction of human evolution (domestication syndrome). The third is accumulated genetic load (resulting in class).

Dimensions of Human Differences

0. Neoteny Bias: Degree of Domestication Syndrome.

1. Quality Bias (Genetic Load): Quality and Quantity of Grey and White Matter, and the underlying biochemistry.

2. Development Bias: Sensory > Motor > Language > Reasoning > Social Awareness > Self Regulation

3. Predator (specific) vs Prey(general) Bias: Hemispheric Prey(General) Right vs Predator(specific) Left

4. In Time Empathizing vs Over Time Systematizing Bias: Integration of hemispheres and regions: prey, empathizing, vs Isolation of hemispheres and regions: predator, systematizing.

5. Sexual Reproduction Resource Bias: Sex Variation in Female Short term Prey Consumption sensitivity, and Masculine Long Term Predatory Systematizing sensitivity.

6. Sexual Survival and Reproduction Bias (Status): The female prey strategy seeks status advantage for hyper attention, hyperconsumption, low risk cooperation, evasion of risk by evasion of responsibility for conflict resolution and use of indirect conflict by seduction, false promise, undermining, sedition, and treason but incapable of organizing at scale.

Versus Male predatory strategy seeks status advantage for hyper-ability, hyper-capitalizion, high risk cooperation, pursuit of risk for pursuit of responsibility despite need for conflict production or resolution, and use of direct argument, persuasion, threat, violence, and capable of organizing at scale.

Group Differences (Neotenic Evolution)

Humans within Africa evolved by north vs south isolation and speciation then rehybridization during climate shifts. Humans evolved in leaps Africa > East Africa (and the coastal expansion) > the dry Persian gulf (and the South Eurasian expansion) > Europe > North Eurasian AND the Tibetan Plateau > East Asia.

The direction of evolution is called domestication syndrome or neoteny, or pedomorphism depending upon discipline and context. We trade off rate and depth of maturity (in all phases) for lengthening the adaptability of childhood, and lowering aggression.

Roughly speaking every speciation event as we isolated and speciated as we moved north, produced between one and one-half standard deviations in cognitive adaptability. We call this rate of adaptability due to extension of and limitation of maturity is what causes median differences in demonstrated intelligence between groups.

But this is more an effect of suppression of survival of those who can’t adapt on one hand and neotenic evolution on the other hand. So these two factors and the number of local competitors and the scarcity of resources in relation to the population produced different demographic distributions. In other words, groups differ largely in rates and depths of maturity and in aggression because of evolutionary adaptation but differences in intelligence between groups have just as much to do with reducing the size of the underclasses (those with higher genetic load) under European and east Asian manorialism than with neoteny.

Causes and Consequences of Neotenic Evolution, Paedomorphism, and Domestication Syndrome

Cause: Reduction of Neural Tube Stem Cells

Neural Crest Cells (NCCs): During embryonic development, the neural tube gives rise to neural crest cells, a transient, multipotent stem cell population. NCCs migrate throughout the embryo and differentiate into diverse tissues, including parts of the skull, cartilage, pigmentation cells (melanocytes), adrenal glands, and peripheral nervous system components.

Reduction Mechanism: A reduction in the number or migratory capacity of NCCs from the neural tube during gestation can occur due to genetic mutations, selective pressures, or environmental factors. This reduction disrupts the normal development of NCC-derived tissues, leading to altered developmental timing (heterochrony).

Role in Neotenic Evolution and Paedomorphism:
Delayed Development: Fewer NCCs can slow the maturation of traits like cranial bones, teeth, or pigmentation, resulting in adults retaining juvenile features (e.g., larger eyes, smaller jaws, softer cartilage). This is a hallmark of neoteny and paedomorphism, where adult organisms resemble juveniles of their ancestors.
Selection Pressures: In stable environments or under sexual selection, juvenile-like traits (e.g., reduced aggression, “cute” features) may confer advantages, favoring mutations that reduce NCC populations. For example, smaller skulls or less pronounced facial features may be selected for social or reproductive benefits.

Role in Domestication Syndrome:
Artificial Selection: During domestication, humans select for tameness and docility, traits linked to reduced stress responses and aggression. These behavioral changes are tied to NCC-derived tissues, such as the adrenal glands (which regulate stress hormones). A reduction in NCCs can lead to smaller adrenal glands and lower stress hormone production, promoting tameness.
Pleiotropic Effects: The neural crest hypothesis suggests that selecting for tameness inadvertently affects other NCC-derived traits. Reduced NCC migration or proliferation can cause physical changes like floppy ears (altered cartilage), depigmentation (fewer melanocytes), shorter snouts (smaller craniofacial bones), and curly tails, which are common in domesticated species like dogs, pigs, and foxes.
Genetic Basis: Mutations in genes regulating NCC development (e.g., those affecting neural tube formation or NCC migration) can reduce NCC populations. These mutations may be amplified through selective breeding, as seen in experiments like the Russian fox domestication study, where tame foxes exhibited domestication syndrome traits.

Neotenic Evolution

Causes:
Selective pressure for prolonged juvenile traits (e.g., playfulness, adaptability).
Environmental stability reducing need for rapid maturation.
Genetic mutations affecting developmental timing (heterochrony).
Sexual selection favoring juvenile-like features (e.g., larger eyes, smaller snouts).

Consequences:
Retention of juvenile physical traits (e.g., softer fur, larger heads relative to body).
Extended learning periods, enhancing behavioral flexibility.
Reduced aggression, promoting social cooperation.
Potential vulnerability to environmental changes due to slower maturation.

Paedomorphism

Causes:
Genetic alterations slowing or halting maturation processes.
Natural selection favoring juvenile traits in adults for survival or reproduction.
Ecological niches favoring smaller, less specialized forms.
Human intervention (e.g., selective breeding for juvenile features).

Consequences:
Adult retention of juvenile morphology (e.g., flatter faces, smaller jaws).
Behavioral traits like curiosity and docility persist into adulthood.
Reduced reproductive maturity or delayed sexual development.
Increased appeal to humans (e.g., “cute” features in pets).

Domestication Syndrome

Causes:
Artificial selection by humans for tameness and utility.
Genetic changes in neural crest cell development affecting multiple traits.
Relaxed natural selection pressures in captive environments.
Cross-breeding and inbreeding amplifying certain traits.

Consequences:
Physical changes: smaller brains, floppy ears, shorter snouts, curly tails.
Behavioral shifts: reduced fear, increased sociability, and docility.
Depigmentation (e.g., white patches, varied coat colors).
Hormonal changes (e.g., lower stress response, altered reproductive cycles).

Sex Differences in Cognition (Prey and Predator)

Sexes differ in cognition, speech, tactics, strategy, conflict, and warfare (see sex differences in antisocial behavior) with male force, fraud, and criminality and female manipulation, reputation destruction, and promiscuity.

Sex differences function as a division of labor, time, and scale:

GIVEN Sex Differences in Cognition:

Feminine vs Masculine
Lateral (more) vs longitudinal Brain Organization (fast)
In Time (now) vs Over Time (then)
Direct (perceptible) vs Abstract (predicted) Causality
Empathizing vs Systematizing
Experience vs Consequence
HyperConsuming vs Capitalizing
Devotion in time vs Loyalty over time
Special Pleading/asymmetry vs Consistency/symmetry
Status by Consumption w/o responsibility vs Status by Capitalizing with responsibility
Irresponsibility vs Responsibility for Commons
One/Few vs Populations/Many Small
Scale vs Large Scale
Prey(Submission) vs Preditor(Dominance)
Herd vs Packs Global vs National
Dysgenic vs Eugenic
Devolutionary vs Evolutionary
Left (parasitic) vs Right (productive)

AND GIVEN

Sex Differences in Limits:
Masculine: There is a limit to what responsibility I can bear.
–vs–
Feminine: There is no limit to the consumption I can bear.

AND GIVEN

Distribution of Sex Differences in the Population:
[masculine (systematizing) vs feminine (empathizing)] The distribution of traits is overlapping in the population distribution with a few cognitively feminine males and cognitively masculine females, as well a larger number of extreme males (autism) and extreme females (psychosis).

AS SUCH

Evolutionary Necessity of the Division of Cognition
Masculine conservatives perceive the world across time (reals) and feminine progressive perceive the world in time (feels). Progressive historians complain about history and conservative historians explain history.

Feminine in time vs Masculine over time.
Masculine minds will be better at everything at scale. But the feminine ability to intuitively manage many relationships and states of mind (children especially but other women as well is an equal advantage in the IN TIME domain.).

Unconstrained (plenty) vs Constrained Visions (scarcity)
If the feminine mind did not hold the unconstrained vision, mothers would give up on their children. If the masculine mind did not hold the constrained vision, no group would survive the disorder. So, we see feminine opportunity and masculine scarcity. Evolution always divides the labor. Among humans it divides the cognitive labor of “TIME and SCALE”.
(Note: See Thomas Sowell: A Conflict of Visions)

Evolution of Differences in Cognition
Our findings are that all differences in cognition valuation and expression, other than those of genetic load or in-utero development, are caused by sex differences in the organization of the brain for the purpose of dividing the labor of the sexes into specializing in opposite time frames.

Why? Physics and Ternary Logic of the Universe.
Think of humans evolving from fast male sperm predator, and slow female egg prey if you want a humorous analogy to help you remember. But while easy to remember and somewhat humorous, the analogy is quite accurately the causality.

Explaining why this division of labor exists produces an origin of sex differences in physics and combined with differences in responsibility and status seeking provides the three causal properties that define human differences in behavior.

Nature likes ternary logic which is something we explore elsewhere if you want to twist your brain inside out on yet another issue. 😉

Personality Differences

Think of human cognitive differences this way:

First Principle: Sex Differences: Feminine < to > Masculine

Dimensions of sex differences:
0) Cognitive Division: Empathizing(Words) < to > Systematizing(Actions)
1) Time Frame: (Past-Present < to > Future)
2) Perception: (Experience < to > Consequence)
3) Number of People: (One < to > Populations)
4) Acquisition: (Hyperconsumption < to > Capitalization)
5) Self Responsibility for Commons: (Min < to > Max)
6) Reciprocity: (Special Pleading < to > Consistency)
7) Causality:(Direct(visible) < to > Abstract(1st principle))

In Addition:

a) Those are the causal dimensions of all human behavior. They are modified only by personality differences including intelligence, genetic load (negative), and developmental trauma.

b) All personality traits are merely variations in the above biases, toward the processing of information by the neurological economy (performance) and ecology (constitution). (Before, During, After)

c) Note that Personality Traits (independent of sex and context) do not vary substantially but Personality Facets (in context, accounting for sex) do so substantially. In other words, Personality profiles that do not account for sex differences over generalize and create a fictitious false equality between the sexes.

c) Note that in general, Human vocabulary whether noun, adjective, verb, adverb, connector(link) or approval-disapproval, consists of approximately seven dimensions also.

d) Note that neoteny and resulting intelligence and resulting agency constitute the causal direction of human evolution. And that genetic load (limits to neoteny and intelligence) determines the difference between groups (races, ethnicities) and classes.

Reframing OCEAN Personality Traits as Properties of Neural Adaptability

Intelligence (Rate of Neural Adaptivity):
Definition: Intelligence is reframed as the speed and efficiency with which neural networks adapt to new information, solve problems, and integrate experiences into behavior.
Neural Basis: High intelligence reflects rapid synaptic plasticity, efficient neural pruning, and robust connectivity across brain regions (e.g., prefrontal cortex, hippocampus). This enables quick learning, pattern recognition, and cognitive flexibility.
Characteristics:
High Adaptivity: Fast assimilation of new data, strong problem-solving, and ability to reconfigure neural pathways for novel tasks.
Low Adaptivity: Slower learning curves, difficulty integrating new information, or rigid cognitive patterns.
Example: A highly intelligent individual rapidly adapts to a new software tool by forming new neural connections, while lower adaptivity might result in prolonged struggle with the same task.

Openness vs. Close-Mindedness:
Definition: Openness reflects a high propensity for neural adaptability to novel stimuli, ideas, and experiences, while close-mindedness indicates resistance to neural reconfiguration.
Neural Basis: Openness is associated with enhanced activity in the default mode network (DMN) and prefrontal cortex, facilitating imagination, creativity, and integration of abstract concepts. Close-mindedness may involve stronger reliance on entrenched neural pathways, limiting exploration.
Characteristics:
Openness: High neural plasticity allows for embracing uncertainty, seeking novel experiences, and forming new associations. The brain readily rewires to incorporate unconventional ideas.
Close-Mindedness: Rigid neural structures resist change, favoring familiar patterns and rejecting novel inputs, leading to cognitive conservatism.
Example: An open individual’s brain adapts to a new cultural perspective by forming new connections, while a close-minded individual’s brain reinforces existing biases, resisting change.

Extroversion vs. Introversion:
Definition: Extroversion reflects neural adaptability oriented toward external social and environmental stimuli, while introversion indicates adaptability focused on internal processing and lower external stimulation.
Neural Basis: Extroversion is linked to heightened dopamine sensitivity in reward circuits (e.g., nucleus accumbens), driving adaptation to social and sensory inputs. Introversion involves greater activity in introspective regions (e.g., anterior cingulate cortex), prioritizing internal neural adjustments.
Characteristics:
Extroversion: Neural networks rapidly adapt to social cues, thriving in dynamic, high-stimulation environments. The brain prioritizes external feedback loops.
Introversion: Neural adaptability is directed inward, optimizing for reflection and self-regulation, with lower tolerance for overstimulation.
Example: An extrovert’s brain quickly adapts to a lively social event by enhancing reward-related neural firing, while an introvert’s brain adapts by stabilizing internal states, preferring quieter settings.

Agreeableness vs. Disagreeableness:
Definition: Agreeableness reflects neural adaptability that prioritizes social harmony and cooperation, while disagreeableness indicates adaptability favoring self-interest or conflict.
Neural Basis: Agreeableness is associated with enhanced oxytocin release and activity in empathy-related regions (e.g., insula, mirror neuron systems), facilitating neural alignment with others’ emotions. Disagreeableness may involve stronger activation of self-focused regions (e.g., amygdala in threat detection).
Characteristics:
Agreeableness: Neural networks adapt to promote prosocial behaviors, syncing with others’ emotional states and reducing conflict-driven neural responses.
Disagreeableness: Neural adaptability emphasizes self-preservation, with heightened sensitivity to perceived threats, leading to competitive or antagonistic responses.
Example: An agreeable person’s brain adapts by mirroring a friend’s emotions during a conversation, while a disagreeable person’s brain may prioritize defensive neural patterns, escalating conflict.

Conscientiousness vs. Impulsivity, Stimulation, Novelty Seeking:
Definition: Conscientiousness reflects neural adaptability that prioritizes long-term planning and self-regulation, while impulsivity, stimulation, and novelty seeking indicate adaptability driven by immediate rewards and sensory input.
Neural Basis: Conscientiousness is linked to strong prefrontal cortex control over impulsive limbic system activity, enabling goal-directed neural reconfiguration. Impulsivity and novelty seeking are tied to hyperactive dopamine pathways and weaker inhibitory control.
Characteristics:
Conscientiousness: Neural networks adapt to maintain focus on delayed rewards, reinforcing disciplined behaviors and structured neural patterns.
Impulsivity/Novelty Seeking: Neural adaptability is skewed toward short-term gratification, with rapid responses to novel or stimulating inputs, often bypassing long-term planning.
Example: A conscientious person’s brain adapts by strengthening neural pathways for task persistence, while an impulsive person’s brain rewires quickly for a thrilling, spontaneous activity.

Stability vs. Neuroticism:
Definition: Stability reflects neural adaptability that maintains emotional equilibrium under stress, while neuroticism indicates hyperactive neural responses to stressors, leading to instability.
Neural Basis: Stability is associated with balanced activity in the hypothalamic-pituitary-adrenal (HPA) axis and strong regulatory feedback from the prefrontal cortex. Neuroticism involves overactive amygdala responses and dysregulated stress hormone release, amplifying emotional volatility.

Characteristics:
Stability: Neural networks adapt to stressors by maintaining homeostasis, efficiently recalibrating emotional responses to remain calm.
Neuroticism: Neural adaptability is disrupted by hypersensitivity to negative stimuli, leading to frequent and intense rewiring of emotional circuits, resulting in anxiety or mood swings.
Example: A stable individual’s brain adapts to a workplace setback by regulating stress responses, while a neurotic individual’s brain amplifies the threat, triggering excessive neural restructuring around fear.

Summary

By reframing OCEAN traits as properties of neural adaptability, we view personality as a spectrum of how the brain rewires itself in response to stimuli:

Intelligence sets the pace of adaptation.

Openness governs adaptation to novelty.

Extroversion/Introversion directs adaptation toward external or internal focus.

Agreeableness shapes adaptation for social harmony.

Conscientiousness prioritizes long-term adaptive planning.

Stability ensures adaptive resilience under stress.

Moral Differences

Humans intuitively prioritize certain moral principles, such as protecting kin, ensuring fair exchange, or upholding group loyalty. Jonathan Haidt’s Moral Foundations Theory (MFT) identifies six evolved psychological systems—Care/Harm, Fairness/Cheating, Loyalty/Betrayal, Authority/Subversion, Sanctity/Degradation, and Liberty/Oppression—that shape moral behavior. These foundations represent mechanisms for asserting claims over physical, social, or moral assets. These claims align with Demonstrated Interest, the observable investments individuals make to secure or defend assets like personal autonomy, kin, group membership, resources, status, or values. By mapping Haidt’s foundations onto Demonstrated Interest categories, we reveal how moral intuitions enforce cooperative contracts, rooted in evolutionary pressures to negotiate and protect property rights in social systems.

Alignment of Haidt’s Moral Foundations (Property Rights) with Demonstrated Interest

Care/Harm: Property Right to Bodily Integrity and Kin
Property Right Description: The Care/Harm foundation asserts a property right over one’s body and kin, treating their safety and well-being as inalienable assets. Caring behaviors protect these “properties” from harm, while violations (e.g., abuse) are seen as theft or destruction.
Demonstrated Interest Category: Kin (primary), Self (secondary)
Kin: Care reflects investments in protecting and nurturing relatives, ensuring genetic legacy. Example: A parent sacrificing resources for a child’s safety demonstrates interest in kin survival, lighting up neural circuits tied to attachment (e.g., oxytocin release in the limbic system).
Self: Extends to personal bodily integrity, as self-preservation enables kin care. Example: Defending oneself from attack demonstrates interest in personal survival.
Alignment Rationale: Rooted in mammalian attachment systems, Care/Harm aligns with Demonstrated Interest in Kin by prioritizing claims to family survival, a core evolutionary driver. Its secondary focus on self-protection supports the foundational right to personal autonomy, activated by neural “lights” in survival circuits.

Fairness/Cheating: Property Right to Reciprocal Exchange
Property Right Description: Fairness/Cheating claims ownership over the fruits of one’s labor or contribution, expecting proportional distribution. Cheating is theft of this earned share, violating reciprocal contracts.
Demonstrated Interest Category: Resources (primary), Group (secondary)
Resources: Fairness governs claims to material or social rewards based on effort. Example: A worker demanding fair compensation for their labor demonstrates interest in resource allocation, activating neural reward circuits (e.g., dopamine in the nucleus accumbens).
Group: Enforces group-level reciprocity to sustain cooperation. Example: Excluding a shirker from group benefits demonstrates interest in maintaining collective trust.
Alignment Rationale: Tied to reciprocal altruism, Fairness aligns with Demonstrated Interest in Resources by protecting individual claims to earned assets. Its group-level enforcement supports cooperative systems, with neural “lights” brightest in circuits detecting proportionality.

Loyalty/Betrayal: Property Right to Group Membership
Property Right Description: Loyalty/Betrayal asserts a property right to group membership, treating the group as a collective asset (e.g., shared security, identity). Betrayal is theft of this shared “property,” eroding cohesion.
Demonstrated Interest Category: Group (primary)
Group: Loyalty reflects investments in group cohesion through cooperation and sacrifice. Example: A soldier defending their community demonstrates interest in group survival, lighting up social bonding circuits (e.g., insula activity).
Alignment Rationale: Evolved from tribal coalition-building, Loyalty aligns directly with Demonstrated Interest in Group, enforcing claims to collective assets critical for survival. The neural “lights” shine brightest in social identity circuits, driving group-oriented behaviors.

Authority/Subversion: Property Right to Hierarchical Order
Property Right Description: Authority/Subversion claims ownership over roles within a hierarchical structure, where leaders coordinate resources and followers gain stability. Subversion disrupts this “property.”
Demonstrated Interest Category: Status (primary), Group (secondary)
Status: Authority reflects investments in securing or respecting hierarchical positions. Example: A leader enforcing rules demonstrates interest in maintaining status, while followers’ deference demonstrates interest in role stability, activating neural circuits for social order (e.g., prefrontal cortex).
Group: Supports group stability through ordered roles. Example: Upholding traditions demonstrates interest in group continuity.
Alignment Rationale: Shaped by primate hierarchies, Authority aligns with Demonstrated Interest in Status by protecting claims to influence, with secondary benefits for group coordination. Neural “lights” are brightest in circuits regulating social hierarchy.

Sanctity/Degradation: Property Right to Sacred Values
Property Right Description: Sanctity/Degradation asserts a property right to sacred values (e.g., traditions, beliefs) as inviolable group assets. Degradation is theft or contamination of this moral “property.”
Demonstrated Interest Category: Values (primary), Group (secondary)
Values: Sanctity reflects investments in upholding moral or cultural norms. Example: A community enforcing religious taboos demonstrates interest in preserving shared ideals, lighting up neural circuits tied to disgust and purity (e.g., anterior insula).
Group: Reinforces group identity through shared values. Example: Participating in rituals demonstrates interest in collective cohesion.
Alignment Rationale: Rooted in pathogen avoidance and group signaling, Sanctity aligns with Demonstrated Interest in Values by defending moral capital, which reduces free-riding. Neural “lights” are most active in circuits reinforcing normative commitment.

Liberty/Oppression: Property Right to Autonomy
Property Right Description: Liberty/Oppression claims ownership over personal autonomy, treating freedom as an inalienable asset. Oppression is theft of this self-ownership.
Demonstrated Interest Category: Self (primary), Resources (secondary)
Self: Liberty prioritizes investments in personal freedom and self-ownership. Example: Resisting coercive control demonstrates interest in autonomy, activating neural circuits for agency (e.g., prefrontal cortex).
Resources: Extends to control over one’s labor or property. Example: Defending property rights demonstrates interest in resource ownership.
Alignment Rationale: Emphasizing freedom from domination, Liberty aligns with Demonstrated Interest in Self by protecting self-ownership, the ultimate property right. Its resource focus ties to autonomy over earned assets, with neural “lights” brightest in agency-related circuits.

Developmental Bias In Cognitive Processing

Why do some people gravitate toward sensory experiences like art or music, others toward physical pursuits like athletics, some toward social connections, and others toward rational problem-solving? These behavioral biases arise from each individual’s homeostatic state—a dominant neural baseline that shapes the foundation of their relationships and experiences. This baseline, established during brain development, determines which neural circuits are most active, or as vividly described, which “Christmas tree lights” shine brightest in one’s neurology. Governed by heterochrony, the process altering the timing of neural maturation, this homeostatic state dictates the experiences individuals rely on most.

The brain matures along a posterior-to-anterior trajectory, beginning with sensory regions (occipital, temporal lobes), progressing to motor areas (parietal, precentral gyrus), social-emotional centers (limbic system, insula), and culminating in procedural regions (prefrontal cortex). Heterochrony, often triggered by reduced neural crest cell (NCC) proliferation during gestation, can shift this trajectory, fixing the brain’s homeostatic state at a specific stage. For instance, a state dominated by sensory circuits prioritizes perceptual experiences, while one centered on procedural regions favors logic. This dominant baseline becomes the lens through which individuals form most interactions and perceptions, anchoring their behavioral preferences.

Understanding this homeostatic state reveals why your tendencies—whether to savor sensory details, seek physical challenges, nurture social bonds, or analyze problems—feel instinctive. Shaped by developmental processes like heterochrony and NCC dynamics, this baseline amplifies certain neural networks, making them the brightest “lights” in your neural framework. By exploring how these processes establish each person’s dominant neural state, you can see why individuals form relationships and experiences in such distinct ways, each driven by the unique illumination of their neural Christmas tree.

Developmental Tendency: Posterior-to-Anterior Brain Maturation

Overview: Brain development in humans and other mammals follows a posterior-to-anterior trajectory, progressing from sensory regions to motor, social, and procedural (executive) functions. This reflects the sequential myelination and synaptic pruning of neural circuits, aligning with the functional demands of survival and adaptation.

Stages of Maturation: Sensory Regions (Posterior, e.g., Occipital, Temporal Lobes): Develop first, enabling early processing of sensory inputs (vision, hearing, touch). Neural crest cell (NCC)-derived structures (e.g., sensory ganglia) contribute to sensory system formation. Supports basic survival through environmental awareness. Motor Regions (Central, e.g., Parietal, Precentral Gyrus): Develop next, facilitating movement and coordination. Involves integration of sensory feedback with motor output, supported by NCC-derived peripheral nerves. Enables exploration and interaction with the environment. Social Regions (Anterior, e.g., Limbic System, Insula): Mature later, governing emotional regulation and social behaviors. NCC-derived structures (e.g., adrenal medulla, autonomic nervous system) influence stress responses and social bonding. Supports group dynamics and cooperation. Procedural/Executive Regions (Prefrontal Cortex): Mature last, controlling planning, decision-making, and impulse control. Reliant on complex neural integration, with minimal direct NCC influence but affected by overall developmental timing. Enables long-term strategy and self-regulation.

Neural Basis: Synaptic Plasticity and Myelination: Posterior regions myelinate earlier, stabilizing sensory circuits, while anterior regions (e.g., prefrontal cortex) myelinate into adolescence/early adulthood, reflecting prolonged plasticity. Neural Crest Cell Influence: NCCs, originating from the neural tube, contribute to peripheral and autonomic nervous system development, which supports sensory and social functions. A reduction in NCCs during gestation (as discussed previously) can delay or alter this maturation trajectory, favoring juvenile traits. Heterochrony: Changes in developmental timing (e.g., prolonged plasticity in anterior regions) can result in neoteny, where later-maturing social and procedural functions remain underdeveloped, resembling juvenile states.

Cause: Reduction of Neural Crest Cells: Mechanism: Fewer NCCs from the neural tube during gestation reduce the development of NCC-derived tissues (e.g., sensory ganglia, adrenal glands, craniofacial structures). This can delay sensory and social maturation, skewing development toward a more posterior (sensory-dominated) state. Impact on Maturation: Sensory regions, less dependent on extensive NCC migration, mature relatively normally. Social and procedural regions, reliant on NCC-derived autonomic and stress systems, may remain underdeveloped, leading to prolonged juvenile traits like playfulness or reduced aggression. In domestication syndrome, reduced NCCs correlate with tameness and juvenile morphology (e.g., smaller jaws, floppy ears), reflecting a developmental arrest at earlier stages. Example: In domesticated foxes, reduced NCCs lead to smaller adrenal glands (less stress response) and delayed social maturation, maintaining juvenile behaviors like docility into adulthood.

Evolutionary Tendency: Homeostatic Steady State Along the Spectrum

Overview: Evolution favors a homeostatic steady state where neural adaptability stabilizes at a specific point along the posterior-to-anterior maturation spectrum. This steady state reflects an organism’s adaptation to its ecological niche, balancing sensory, motor, social, and procedural capacities. Neotenic evolution, paedomorphism, and domestication syndrome represent shifts toward earlier (posterior, sensory-social) points on this spectrum, often driven by reduced NCCs.

Homeostatic Steady State: Definition: A stable neural configuration where adaptability favors certain functions (e.g., sensory acuity, social bonding) over others (e.g., executive control), optimized for survival and reproduction. Mechanism: Natural or artificial selection reinforces neural circuits that align with environmental demands, stabilizing plasticity at a specific developmental stage. Role of NCC Reduction:Fewer NCCs shift the steady state toward earlier developmental stages, emphasizing sensory and social traits over motor or procedural complexity. This is evident in neoteny (prolonged juvenile traits), paedomorphism (juvenile morphology in adults), and domestication syndrome (tameness, reduced aggression).

Evolutionary Implications: Neotenic Evolution:Favors a steady state with extended plasticity in social and sensory regions, promoting learning and cooperation. Example: Humans retain juvenile traits (e.g., large heads, curiosity) into adulthood, enhancing cultural adaptability. Cause: Reduced NCCs delay anterior maturation, preserving posterior-social dominance. Paedomorphism: Stabilizes at a juvenile-like state, with sensory and social traits dominating over procedural maturity. Example: Axolotls retain larval features (e.g., gills) into adulthood, reflecting a developmental arrest. Cause: NCC reduction limits craniofacial and autonomic development, locking in early traits. Domestication Syndrome:Shifts the steady state toward sensory-social traits, reducing aggression and enhancing human compatibility. Example: Dogs exhibit juvenile wolf traits (e.g., playfulness, smaller skulls), driven by artificial selection for tameness. Cause: Reduced NCCs alter stress and morphological development, favoring a docile, sensory-social state.

Personality Traits as Neural Adaptability:The OCEAN traits (reframed as neural adaptability) reflect where an individual’s neural steady state lies along this spectrum: Intelligence (Rate of Neural Adaptivity): Faster adaptivity correlates with prolonged prefrontal plasticity, favoring procedural maturity. Openness: High plasticity in sensory-social circuits, adapting to novel stimuli, aligns with a neotenic, posterior-leaning state. Extroversion: Sensory-social dominance, with rapid adaptation to external stimuli, reflects a juvenile-like steady state. Agreeableness: Strong social circuit adaptability, linked to NCC-derived autonomic systems, favors cooperation. Conscientiousness: Anterior (procedural) dominance, with disciplined neural reconfiguration, indicates later maturation. Stability: Balanced sensory-social-procedural adaptability, resisting stress-induced neural shifts. NCC Reduction Impact: Reduced NCCs may enhance traits like openness, extroversion, and agreeableness (sensory-social focus) while limiting conscientiousness or stability (procedural maturity), as seen in domesticated animals.

Evolutionary Trade-Offs: Advantages: Sensory-social steady states (neoteny, domestication) enhance cooperation, learning, and environmental adaptability. Juvenile traits increase appeal to humans (e.g., “cute” features in pets) or improve group dynamics. Disadvantages: Reduced procedural maturity may impair complex planning or stress resilience. Over-reliance on sensory-social traits can limit survival in harsh, competitive environments.

Class Differences Genetic Load

Genetic load refers to the burden carried by a population of organisms due to the accumulation of deleterious mutations, or the presence of less optimal gene variants, compared to some optimal genotype.

This concept is crucial in the fields of genetics, evolutionary biology, and conservation biology because it has implications for the health, survival, and reproductive success of a species.

TL’DR;

Genetic load consists of the accumulation of genetic non-adaptation to domestication syndrome (neoteny), genetic mutation, and their combinations that result in variation from fitness, symmetry, neoteny, self regulation, and agency.

The result in civil society, economics, and politics, is class variation, which consists of variation in the capacity to bear responsibility for self, private, and common over increasing periods of time.

This is why there is so little class rotation. Genetics.

TYPES OF GENETIC LOAD

1. Mutational Load

Definition: This is the genetic load imposed by harmful mutations that arise naturally through DNA replication errors or due to environmental factors. These mutations can reduce the fitness of individuals carrying them.

Impact: Over time, new mutations may either be eliminated by natural selection if they are severely detrimental or accumulate in the population if they have only minor effects on fitness. The accumulation of many such slightly deleterious mutations can gradually reduce the overall fitness of the population.

2. Segregational Load

Definition: This type of load arises when different alleles (versions of a gene) exist at a single gene locus, and the heterozygote genotype has a higher fitness than either homozygote genotype.

Impact: Even if natural selection favors the heterozygote, the homozygote individuals are still produced by sexual reproduction, resulting in some individuals with reduced fitness.

3. Inbreeding Load

Definition: Inbreeding load is the reduction in fitness that arises due to increased homozygosity (both alleles at a locus are identical) of deleterious recessive alleles. Inbreeding can lead to a greater expression of these harmful recessive traits.

Impact: This is particularly a concern in small populations or those that are isolated, where genetic diversity is limited, and there is a higher chance of breeding between close relatives.

REDUCING GENETIC LOAD

Natural Selection and Genetic Drift

Natural Selection: Over time, natural selection can reduce genetic load by favoring individuals with fewer harmful mutations. This selective pressure leads to a decrease in deleterious alleles in the gene pool.

Genetic Drift: In small populations, genetic drift can also influence genetic load, sometimes increasing it by chance fixation of deleterious alleles or reducing it by chance elimination of such alleles.

Artificial Selection and Genetic Management

In managed populations, such as those in conservation programs or in agriculture, genetic load can sometimes be managed through selective breeding practices that aim to minimize the incidence of deleterious alleles while maintaining genetic diversity.

Gene Editing

With advances in genetic technologies like CRISPR/Cas9, there is potential to directly reduce genetic load by correcting deleterious mutations at the DNA level, although this approach is subject to ethical and practical considerations.

Implications of Genetic Load

Understanding and managing genetic load is crucial for the conservation of endangered species, the management of captive breeding programs, and understanding human health and disease. For example, genetic disorders in humans are often a direct manifestation of the genetic load, particularly when harmful recessive alleles become expressed in an individual’s genotype.

Summary

Genetic load is a significant evolutionary force that affects the fitness and viability of populations. Managing and understanding this concept is critical for improving health, conserving biodiversity, and understanding the evolutionary dynamics of populations.

Evolutionary Computation

1) Evolution uses sex differences to cause us to pursue extremes of feminine empathizing vs masculine systematizing.

2) Nature ‘computes’ a success wherever female and male interests ‘agree’ (exchange or cooperation)

3) Human adaptability means the conditions under which female and male interests ‘agree’ can vary by environmental conditions, maximizing the range of evolutionary computation.

4) For these reasons nearly all substantial differences in human bias originate in sex differences, and

5) And all such sex differences produce a ‘duality’ where there is a tradeoff between female in-time empathizing (women and children) and male over-time systematizing (men and tribe).

6) Government can facilitate this, or harm it. The marxist sequence harms it. The rule of natural law sequence improves it. Why? Responsibility.