Theory of Knowledge

A unified approach to psychology and philosophy

Philosophy
A New Approach to Naturalism

Gregg Henriques Ph.D. on July 15, 2025

Physicalism tries to reduce everything to matter. Extended naturalism offers a richer approach that includes mind, meaning, morality, and modality as genuine phenomena.

Physicalism tries to reduce everything to matter. Extended naturalism offers a richer approach that includes mind, meaning, morality, and modality as genuine phenomena.

Mindfulness
A New Lens on Mindfulness

Gregg Henriques Ph.D. on May 26, 2025

A new lens on mindfulness: Track how your energy investment, relational dynamics, and narratives shape your life.

A new lens on mindfulness: Track how your energy investment, relational dynamics, and narratives shape your life.

Cognition
Mapping the Mind With 4 Common-Sense Categories

Gregg Henriques Ph.D. on May 20, 2025

What is the mind, really? This post offers a common-sense layered map to help you see how your inner world fits together in doing, feeling, thinking, and talking.

What is the mind, really? This post offers a common-sense layered map to help you see how your inner world fits together in doing, feeling, thinking, and talking.

Cognition
Is the Mind Invisible?

Gregg Henriques Ph.D. on February 7, 2025

Although many in science think of the mind as being an invisible cause of behavior and experience, this blog explains why this is not quite right and much of the mind can be seen.

Although many in science think of the mind as being an invisible cause of behavior and experience, this blog explains why this is not quite right and much of the mind can be seen.

Philosophy
Science, Psychology, and the Human Psyche

Gregg Henriques Ph.D. on January 31, 2025

The relationship between science, psychology, and the human psyche is puzzling. UTOK, the Unified Theory of Knowledge, is a system that can help us make sense of the confusion.

The relationship between science, psychology, and the human psyche is puzzling. UTOK, the Unified Theory of Knowledge, is a system that can help us make sense of the confusion.

Health
Understanding the Illness-Wellness Continuum

Gregg Henriques Ph.D. on December 20, 2024

Here's how to think about well-being on the wellness-illness continuum that consists of four nested dimensions of subjective feeling, functioning, context, and values.

Here's how to think about well-being on the wellness-illness continuum that consists of four nested dimensions of subjective feeling, functioning, context, and values.

Philosophy
Mindedness Is to Psychology What Life Is to Biology

Gregg Henriques Ph.D. on December 13, 2024

Psychological science has long struggled to effectively define its core subject matter. The concept of mindedness gives us a new, effective solution to this puzzle.

Psychological science has long struggled to effectively define its core subject matter. The concept of mindedness gives us a new, effective solution to this puzzle.

Identity
It's About Our Identity, Stupid!

Gregg Henriques Ph.D. on November 8, 2024

Personal Perspective: To understand why Trump is both loved and hated, we need to understand identity and character in America.

Personal Perspective: To understand why Trump is both loved and hated, we need to understand identity and character in America.

Philosophy
What Happened to the Stratification View of Nature?

Gregg Henriques Ph.D. on November 1, 2024

Stratification theories layer the natural world from the inanimate to the animate to the animal to the human. They used to be popular, but no longer. Can they make a come back?

Stratification theories layer the natural world from the inanimate to the animate to the animal to the human. They used to be popular, but no longer. Can they make a come back?

Therapy
The Common Core of Psychotherapy

Gregg Henriques Ph.D. on October 25, 2024

Psychotherapy is more about a healing process than it is matching a specific intervention to a specific problem. This blog describes the common core of that process.

Psychotherapy is more about a healing process than it is matching a specific intervention to a specific problem. This blog describes the common core of that process.

Consciousness
The Hard Problem of...Psychology?

Gregg Henriques Ph.D. on July 20, 2024

Is the new science of consciousness making progress? There are reasons to doubt. A new path can be found considering the problem of psychology.

Is the new science of consciousness making progress? There are reasons to doubt. A new path can be found considering the problem of psychology.

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July 2026
26 Keys to Thriving

From the power of pausing to the ability to ignore, we’ve culled 26 simple, actionable measures for gaining a sense of control and living a meaningful life.

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Self Tests
Self Tests

Self Tests are all about you. Are you outgoing or introverted? Are you a narcissist? Does perfectionism hold you back? Find out the answers to these questions and more with Psychology Today.

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