Dialectical Thinking

Dialectical thinking means holding two opposing ideas at once. Instead of asking which one wins, it looks for what is true in each, then works towards a synthesis that fits the situation. A synthesis is a position built from what is true on both sides. The stance is central to Dialectical Behaviour Therapy (DBT), though it also describes a wider and more flexible way of thinking.

What dialectical thinking means

Under stress, most people think in either-or terms. A person seems all good or all bad, and a day counts as a success or a failure.

Dialectical thinking allows for both at once. For any position you hold, an opposing position can also be held.¹ The task is then to find a synthesis between the two.

It offers a third way between two extremes.¹ One extreme says there is a single absolute truth, and the other says all truth is relative and personal.

Something can be true and still change as its context changes, and that is what dialectical thinking accepts. In plain terms, it is both-and thinking: you can feel love and anger towards the same person at once.

Where the idea comes from

The word dialectics comes from philosophy. A position, the thesis, meets its opposite, the antithesis, and resolves into a fuller synthesis.¹

The therapeutic version was developed by the psychologist Marsha Linehan.¹ She built DBT for people living with borderline personality disorder, many of whom had a long history of self-harm.

Linehan noticed that working only for change left many clients feeling invalidated, meaning their reactions were treated as simply wrong. So she balanced that work with acceptance and validation of the person.¹ That balance is where the therapy gets its name.

DBT draws on two traditions at once. Its mindfulness skills come from Eastern meditative and contemplative traditions.¹ Those skills are used within a Western, behavioural tradition, which works on what a person actually does.

Acceptance and change: the central dialectic

The central tension in DBT is between acceptance and change.¹ The therapist accepts the person fully, while also working towards change.

This is not a fixed halfway compromise; the balance shifts with the situation. It moves away from extreme or rigid responses towards what the moment needs.¹

Wise mind

DBT describes two everyday states of mind. Emotion mind is led by feelings.¹ Reasonable mind is led by logic.

Wise mind is the synthesis of the two. A wise-mind choice is effective and true to your values, not free of all emotion.¹

How therapists use it

A skilled therapist helps a person move from an either-or position to a both-and synthesis.¹ The aim is not to win but to hold what is valid on each side.

The work alternates between two moves. One is validating what is valid in the person's experience, and the other is problem-solving towards change.

These strategies only work when the therapist is genuine.¹ Used as clever techniques, they achieve little.

DBT and the evidence

The stance and the therapy are two different things: dialectical thinking is one principle inside DBT. The evidence belongs to DBT as a whole, not to the stance alone.

DBT is among the most studied talking therapies for borderline personality disorder. It is rated as well established under the American Psychological Association's Division 12 criteria,¹ which ask for benefit in at least two rigorous trials.

More than 10 randomised controlled trials have tested it, across independent research teams.¹ Randomised means assignment by chance, not by choice. The studies span the United States, Canada, Germany, the Netherlands, New Zealand, Spain and Sweden.

Across this research, DBT is linked most strongly with reductions in suicidal and self-injurious behaviour.¹ Teams have since adapted it for other difficulties, such as substance use and eating problems.

So the dialectical stance has real clinical value as part of DBT. It has not been trialled on its own, and no one should claim it treats a condition by itself.

A stance beyond therapy

The stance appears outside DBT as well. Researchers describe it as a treatment process within cognitive behavioural therapy.²

It has also been studied as a measurable style of thought,³ and that style has long been valued in East Asian traditions. Developmental researchers see it as a mature way of reasoning that can grow with age.⁴

Dialectical thinking in everyday life

You do not need a diagnosis to use this stance, which is a practical answer to black-and-white thinking.

Everyday dialectics might sound like this:

• You can love someone and still set a firm boundary.
• You can feel proud of your work and see where it fell short.
• You can grieve a loss and stay open to what comes next.

Holding both sides builds tolerance for uncertainty. It also allows a person to act without pretending the hard part is gone.

Related ideas

Mindfulness, the core skill in DBT, trains present-moment attention without judgement.¹

Acceptance and commitment therapy works on the same basis, holding difficulty and values together rather than choosing between them. Distress tolerance skills also depend on the stance, since tolerating distress means staying with it without acting on it.

Finding support

If either-or thinking is making life harder, a therapist can help. Together you can practise a more flexible stance, and many clinicians trained in DBT or related approaches work this way.

You can start with our guide on how to find the right therapist.

This article is for general information and is not a substitute for professional assessment or care. If this is affecting your life, consider reaching out to a qualified mental health professional.

References

1. [1] Rosenthal, M. Z., & Rodriguez, M. A. (2017). Dialectical Behavior Therapy. In B. J. Sadock, V. A. Sadock, & P. Ruiz (Eds.), Kaplan & Sadock's Comprehensive Textbook of Psychiatry (10th ed.). Wolters Kluwer. shop.lww.com.
2. [2] Fruzzetti, A. E. (2022). Dialectical thinking as a treatment process in cognitive behavior therapy. Cognitive and Behavioral Practice, 29(3), 567-570. doi.org.
3. [3] Spencer-Rodgers, J., Anderson, E., Ma-Kellams, C., Wang, C., & Peng, K. (2018). What is dialectical thinking? Conceptualisation and measurement. In J. Spencer-Rodgers & K. Peng (Eds.), The psychological and cultural foundations of East Asian cognition. Oxford University Press. doi.org.
4. [4] Veraksa, N., & Basseches, M. (2022). Dialectical thinking. In N. Veraksa & I. Pramling Samuelsson (Eds.), Piaget and Vygotsky in XXI century. Springer. doi.org.