What Is… Stockholm syndrome

head with cogs inside

In this series, I dig a little deeper into the meaning of psychological terms. This week’s term is Stockholm syndrome.

Stockholm syndrome is a type of psychological bond that forms between a captor and a hostage. The hostage develops positive feelings toward the captor and their cause, and negative feelings toward law enforcement. While it masquerades as an intimate bond, it’s a basic survival strategy that’s not based on rational thinking. The term was coined in Sweden when in 1973 there was a bank robbery and the hostages later refused to testify against the robbers.

The United States Federal Bureau of Investigation (FBI) puts the incidence rate of Stockholm syndrome among hostage survivors at 8%.

What it involves

Stockholm syndrome is not included as a diagnosis in the DSM-5. The elements that have been associated with Stockholm syndrome fall into four spheres: cognitive, emotional, social, and physical.  Cognitive effects include confusion and refusal to accept what actually happened. Emotional effects are variable and may include hopelessness, depression, guilt, and dependence on the captor. Social effects may include anxiety and cautiousness. Physical effects may result from deprivation of the necessities of life.

The positive feelings towards the captor may begin as being feigned to appease the captor, but with the level of fear and utter loss of control associated with their situation the captor becomes convinced that these feelings are genuine. The relief that comes from not being killed by the captor gets morphed into feelings of gratitude toward the captor.

How and why it occurs

An article on Thought Co. lists several circumstances that set the stage for Stockholm syndrome to occur: the belief that the captor will kill them; isolation from anyone besides the captor; the belief that it’s impossible to get escape; and the captivity lasts at least a few days.

The Wikipedia article on Stockholm syndrome includes some interesting information about the likely evolutionary value of Stockholm syndrome. It mentions that submission responses to abusive behaviour have been seen in primates. In hunter-gatherer societies, it was not unusual for women to be captured by neighbouring tribes. Capture-bonding may have improved the odds of survival, and over time this would favour the propagation of traits consistent with captor-bonding.

I decided to take a closer look at this topic because I was thinking about a trauma-bonding experience described by Alexis Rose in her book Untangled. It is so astonishing the things that our brains and our bodies will do in order to keep us alive. Then to look at the completely opposite end of that spectrum, sometimes our brain makes us decide to end our life. It’s fascinating, albeit in a macabre way.


  • ThoughtCo: What Is Stockholm Syndrome?
  • Wikipedia
The Psychology Corner: Insights into psychology and psychological tests

The Psychology Corner has an overview of terms covered in the What Is… series, along with a collection of scientifically validated psychological tests.

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Ashley L. Peterson


Ashley is a former mental health nurse and pharmacist and the author of four books.

6 thoughts on “What Is… Stockholm syndrome”

  1. Great post! There’s a lot of great research coming out about trauma bonding. It seems to impact the brain in a similar way to substance dependence and domestic violence does.

  2. ❤️ I was reading your post, (you had me right away with the title) thinking I can relate so much to this. In fact my therapist and I were talking about it the other day. Then I saw that you mentioned my book. Thank You!! And thank you for all you do every day in raising awareness. You are a continuous inspiration, Ashely. ❤️

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