PHQ | QUESTIONS: Using All Cognitive Functions Equally

Listen To The Podcast Episode: PHQ | QUESTIONS: Using All Cognitive Functions Equally

Have you ever felt like you have too many ways of making a decision?

You can see the logical solution. You recognize how your choice will impact other people. You're aware of your personal values. And somewhere in the back of your mind, there's an intuitive sense of where everything is heading.

All of these perspectives seem equally compelling.

You might think this makes you an exceptionally balanced decision-maker. After all, isn't personal growth about developing all your cognitive functions?

But what if trying to give every cognitive function an equal voice is actually making your decisions harder?

This is an interesting paradox in personality development: Having access to more mental processes doesn't necessarily mean you should rely on all of them equally.

In a Personality Hacker Q&A episode, a listener named Jill raised this exact question. She identified a strong preference for Perspectives (Introverted Intuition) but noticed that she seemed to use three different decision-making functions almost equally:

• Accuracy (Introverted Thinking) - evaluating information based on internal logical consistency.

• Authenticity (Introverted Feeling) - evaluating information based on personal values and inner alignment.

• Harmony (Extraverted Feeling) - evaluating information based on interpersonal needs, shared values, and social impact.

Her question was simple: Why might someone develop multiple mental processes to a similar degree, and what should they do with that information?

Let's explore how these eight processes work, why your environment can influence their development, and how understanding your natural preferences can help you become a more confident decision-maker.

Understanding the Cognitive Functions and Your Personality Type

In Jungian psychological type theory, cognitive functions describe different ways of perceiving information and making decisions.

Each of the 16 Myers-Briggs personality types has a characteristic pattern of cognitive preferences.

At Personality Hacker, we explain the four primary cognitive functions using a metaphor called the Car Model.

Imagine your personality as a car with four passengers, each playing a different role.

The Driver (Dominant Function)

Your Driver is your most natural cognitive process. It's the mental tool you tend to reach for automatically, often without realizing you're using it.

The Copilot (Auxiliary Function)

Your Copilot balances your Driver by providing a complementary way of engaging with information or making decisions. Developing this cognitive function is one of the most valuable opportunities for personal growth.

The 10-Year-Old (Tertiary Function)

Your 10-Year-Old can feel comfortable and enjoyable, but it may operate with less maturity than your Driver or Copilot. You might rely on it when feeling defensive, uncertain, or resistant to change.

The 3-Year-Old (Inferior Function)

Your 3-Year-Old is generally your least developed and least comfortable primary cognitive function. It can become especially noticeable under stress, although it also offers opportunities for deeper psychological development.

The goal isn't to develop all four equally or make all four passengers responsible for driving.

It's to understand how your cognitive functions work together and which processes are best suited for different situations.

But what about the other four?

What Are the Four Shadow Cognitive Functions?

There are eight cognitive functions in the broader Jungian personality framework, but the Personality Hacker Car Model focuses on four primary processes.

The remaining four are often referred to as shadow functions.

Dr. John Beebe's eight-function model expands on Jungian typology by associating all eight processes with different archetypal roles.

This provides a framework for exploring how less-preferred mental processes may influence our psychological experiences.

However, having a particular position in an eight-function model doesn't necessarily mean a shadow function will manifest with identical strength or expression in every person of the same type.

In the podcast, Antonia Dodge shares an important observation: Our upbringing, relationships, and environment may substantially influence how familiar we become with these shadow cognitive functions.

Consider what happens when you grow up surrounded by people who naturally use a cognitive function that isn't among your own primary four.

You may learn to recognize and imitate their approach because it's part of your everyday environment.

Joel Mark Witt shares an example from his upbringing. His father was an ISFP, and his brother was an ESFP. Both personality types have Sensation (Extraverted Sensing) among their preferred processes.

As Joel explains:

"I have a lot of sensation development."

He connects his familiarity with Sensation (Extraverted Sensing) to the amount of time he spent around people who naturally relied on that process.

This brings us to an important distinction.

Becoming familiar with a cognitive function doesn't necessarily mean it's one of your natural preferences.

You might develop comfort with shadow functions because your parents encouraged them, your workplace rewards them, or an important relationship requires you to practice them.

That doesn't automatically mean your fundamental personality type has changed.

It may simply mean you've developed additional psychological tools.

Why INFJs May Rely on Multiple Cognitive Functions When Making Decisions

Let's return to Jill's original question.

Because she identifies strongly with Perspectives (Introverted Intuition) and describes using Accuracy (Introverted Thinking), Authenticity (Introverted Feeling), and Harmony (Extraverted Feeling), Antonia suggests that Jill might be an INFJ.

This is a working hypothesis rather than a definitive typing conclusion.

If Jill is an INFJ, her primary cognitive function stack would look like this:

Notice something interesting?

Two of the three decision-making processes Jill mentioned are already part of the INFJ's primary function stack.

Harmony (Extraverted Feeling) is the Copilot, while Accuracy (Introverted Thinking) is the 10-Year-Old.

The third process, Authenticity (Introverted Feeling), belongs to the INFJ's shadow-function configuration. Within Beebe's eight-function model, it occupies the sixth position.

It's entirely possible that Jill has become especially familiar with this function through her individual experiences.

But familiarity with three different ways of evaluating information can create a challenge.

Each cognitive function is asking a different question.

Accuracy (Introverted Thinking): Does This Make Sense?

Accuracy seeks internal logical consistency.

It wants to understand whether an argument is sound, whether information fits together, and whether a conclusion can be justified through careful analysis.

For example, when considering a job offer, Accuracy might ask:

Does the compensation justify the responsibilities? Is this opportunity logically consistent with my goals? Are there flaws in my reasoning?

Authenticity (Introverted Feeling): Does This Feel Right to Me?

Authenticity evaluates decisions according to deeply held personal values.

It seeks inner alignment and wants to know whether a choice reflects what matters most to the individual.

Faced with the same job offer, Authenticity might ask:

Does this organization represent my values? Am I compromising something important about myself? Would I feel proud of this decision?

Harmony (Extraverted Feeling): How Will This Affect People?

Harmony directs attention toward interpersonal values, emotional dynamics, and the needs of the people involved.

When evaluating the job offer, Harmony might ask:

How will this impact my family? What do the people affected by this decision need? How can I communicate my choice in a way that respects everyone involved?

Can you see how all three approaches provide valuable information?

And can you see why giving them equal authority might become exhausting?

When each process is allowed to continually reopen the decision, you may find yourself trapped in an internal debate.

You aren't necessarily missing information.

You may be missing a clear decision-making priority.

Why Developing Your Copilot Cognitive Function Creates Greater Balance

So which cognitive function should take the lead?

For an INFJ, Personality Hacker recommends developing and relying on Harmony (Extraverted Feeling), the Copilot process, as a primary decision-making tool.

As Antonia explains in the episode:

"The sweet spot is your secondary process."

Why?

Because the Copilot provides something that the INFJ's dominant cognitive function doesn't naturally prioritize: an outward-facing way to evaluate what's happening.

Perspectives (Introverted Intuition) is an introverted perceiving process. It focuses on interpreting patterns, anticipating implications, and understanding underlying meaning.

It's a powerful tool for developing insight into complex situations.

But insight alone isn't always enough.

You also need opportunities to test your interpretations against the experiences and needs of the people around you.

That's where Harmony (Extraverted Feeling) comes in.

Antonia emphasizes:

"Outer world feedback is imperative for all of us."

Think about an INFJ who has been privately analyzing a relationship problem for several weeks.

They may have developed an elaborate understanding of why the other person behaves a certain way.

They've considered the patterns, examined possible motivations, and imagined where the relationship might be heading.

But they haven't actually talked to the other person.

Their internal interpretation may be insightful. It may even be largely correct.

Yet without meaningful external feedback, they're working with an incomplete picture.

Developing Harmony (Extraverted Feeling) encourages the INFJ to step outside that private analysis and engage with the people involved.

They can ask questions, explore emotional realities, and discover information that wasn't available through introspection alone.

This is how developing your auxiliary cognitive function can create greater psychological balance.

It doesn't replace the Driver.

It gives the Driver an essential partner.

How Cognitive Functions Can Contribute to INFJ Overthinking

One of the more subtle challenges for INFJs is that multiple cognitive processes can keep their attention directed inward.

Perspectives (Introverted Intuition), Accuracy (Introverted Thinking), and Authenticity (Introverted Feeling) are all introverted cognitive functions.

They serve different purposes, but each emphasizes an inward-facing orientation.

If an INFJ relies heavily on these processes while neglecting their preferred extraverted judging function, they may spend considerable time interpreting, analyzing, and reevaluating their choices without taking meaningful action.

For some INFJs, the familiar combination of Perspectives (Introverted Intuition) and Accuracy (Introverted Thinking) can become a pattern of internal overanalysis, sometimes called an Ni-Ti loop in modern typology discussions.

This isn't a formal clinical diagnosis. It's a useful shorthand for recognizing when reflection has stopped producing progress.

And adding another internal evaluation process won't necessarily solve the problem.

Sometimes the most effective next step isn't deeper thinking.

It's having a conversation.

It's checking an assumption.

It's allowing reality to challenge an interpretation.

It's giving yourself permission to make a decision without mentally resolving every possible objection.

Developing Harmony (Extraverted Feeling) Doesn't Mean Becoming a People-Pleaser

Some INFJs resist developing Harmony (Extraverted Feeling) because they associate it with putting everyone else's needs before their own.

But healthy development of this cognitive function isn't about surrendering your autonomy.

It's about understanding interpersonal reality and responding to it consciously.

A well-developed INFJ can recognize someone else's disappointment without automatically making that disappointment their responsibility.

They can seek feedback without allowing other people's opinions to determine every choice.

They can take relationships seriously while maintaining boundaries.

That's what healthy cognitive function development looks like: Using external information to make more informed decisions without losing your own direction.

Four Ways to Develop Your Cognitive Functions Without Becoming Overwhelmed

So what should you do when several cognitive functions seem equally available?

Rather than trying to suppress certain functions or strengthen every process to the same level, experiment with giving them different jobs.

Here are four practical strategies.

1. Identify Your Preferred Decision-Making Cognitive Function

Start by examining your personality type's cognitive function stack.

Which judging function occupies your Copilot position?

If you're an INFJ, that's Harmony (Extraverted Feeling).

If you're an INTJ, that's Effectiveness (Extraverted Thinking), which prioritizes external effectiveness, practical results, and the organization of resources.

Both types lead with Perspectives (Introverted Intuition), but their auxiliary judging functions provide different ways of engaging with the outside world.

Understanding these distinctions can help you identify the cognitive function that balances your natural perceptual preferences.

2. Give Your Other Cognitive Functions Supporting Roles

There's nothing wrong with drawing on several different mental processes.

The problem arises when you expect each one to have equal authority over every decision.

Imagine you're an INFJ deciding whether to accept a leadership position.

You might approach the decision this way:

• Perspectives (Introverted Intuition): Consider where this opportunity could lead in the long term.

• Harmony (Extraverted Feeling): Explore how the position will affect your relationships, responsibilities, and the people you'll lead.

• Accuracy (Introverted Thinking): Check the logic of the decision and identify any inconsistencies.

• Authenticity (Introverted Feeling): Notice whether the opportunity conflicts with an important personal value.

All four processes can contribute useful information.

But instead of repeatedly bouncing among competing criteria, you can deliberately return to your Copilot to help you engage with the external realities of the choice.

3. Use External Feedback to Balance Your Internal Cognitive Functions

If you're prone to internal analysis, you may believe you need to understand a situation perfectly before discussing it.

Try reversing that process.

Have the conversation while your thoughts are still developing.

Ask the questions you haven't yet answered.

For an INFJ developing Harmony (Extraverted Feeling), this might mean reaching out to someone affected by a decision and asking:

What am I not seeing from your perspective?

You may discover that the most useful information was never going to emerge from private reflection alone.

4. Practice Making Decisions Without Reaching Perfect Certainty

Some decisions deserve extensive consideration.

Others don't.

If you regularly become exhausted by choices, experiment with establishing a reasonable amount of time for gathering information, reflecting, and receiving feedback.

Then decide.

For smaller, reversible decisions, you can even treat the outcome as an experiment.

Make a choice, observe what happens, and adjust if necessary.

This gives your cognitive functions real-world information to work with instead of requiring them to predict every outcome in advance.

Can You Actually Develop All Eight Cognitive Functions Equally?

This brings us back to the bigger question.

Can a person develop all eight cognitive functions?

Within Jungian and post-Jungian personality frameworks, people are not understood as being restricted to only four mental processes.

We may recognize, access, and develop behaviors associated with cognitive functions outside our primary stack.

However, using a cognitive function frequently is not the same as preferring it naturally.

And the ability to recognize multiple functions doesn't necessarily mean they're equally differentiated, mature, or reliable.

It's also worth remembering that cognitive function development is a theoretical framework for self-understanding, not something that can be precisely measured by counting how often you think or behave in a particular way.

From a Personality Hacker perspective, the more useful question isn't whether you can develop all eight cognitive functions equally.

It's whether you're developing the parts of your personality that bring greater balance, maturity, and effectiveness into your life.

Your goal isn't to become someone without cognitive preferences.

Your goal is to develop a more conscious relationship with those preferences.

The Real Goal of Cognitive Function Development

There's something liberating about realizing that you don't have to become equally proficient at every way of thinking.

You don't need to turn your personality into a collection of eight perfectly balanced cognitive functions.

Your natural preferences aren't an obstacle to becoming a well-developed person.

They're a starting point.

The challenge is learning when to trust those preferences, when to stretch beyond them, and how to recognize the difference.

For INFJs, developing Harmony (Extraverted Feeling) can create a crucial bridge between a rich internal world and the people and experiences outside it.

For other personality types, that bridge will take a different form.

But the underlying principle remains the same:

Personal growth isn't about eliminating your natural cognitive preferences. It's about learning how to use them more consciously and effectively.

Key Takeaways: Understanding Your Cognitive Functions

• Your personality type has four primary cognitive functions, described in Personality Hacker's Car Model as the Driver, Copilot, 10-Year-Old, and 3-Year-Old.

• Your other four cognitive functions, often called shadow functions, may become familiar through your environment, upbringing, and relationships.

• Being comfortable using a cognitive function doesn't necessarily make it one of your natural preferences.

• For INFJs, developing Harmony (Extraverted Feeling) can help balance internal insight with external feedback and interpersonal awareness.

• You can draw on multiple decision-making cognitive functions without giving every process equal authority.

• The goal of cognitive function development is greater psychological balance, not identical proficiency across all eight cognitive functions.

Ready to Understand Your Cognitive Functions More Deeply?

Understanding your cognitive functions is the first step toward recognizing how your mind works. But discovering how your preferred and shadow functions interact, influence your decisions, and shape your personality is where deeper self-awareness begins.

That's where Personality Hacker's Pillars of Personality comes in.

This comprehensive program explores the Car Model, all eight cognitive functions, and the personality patterns that influence how you think, feel, and make decisions.

Rather than simply learning more personality theory, you'll discover how to apply these insights to your everyday life, work with your natural strengths, and develop a more balanced approach to personal growth.

Don't just learn about your personality. Start using that knowledge to create meaningful change.

Explore Pillars of Personality and take the next step in your personal growth journey today.

We'd Love to Hear From You

Have you noticed yourself using cognitive functions that aren't part of your primary personality stack? Do you think your family, relationships, or environment influenced their development?

And perhaps more importantly, when you make a difficult decision, which cognitive function gets the final say?

Share your experience in the comments. Your observations might help someone else better understand their own personality development.

_________

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