What is Gaslighting and How to Spot a Gaslighter?

Posted on: April 15th, 2019 in Uncategorized by Pat Mesiti | 11 Comments

The term gaslighting is everywhere. At first I had no idea what people were talking about. Is this a new way of illuminating your house? Are people using gaslighting as a way of reducing their electricity bill? Finally I googled it and Wikipedia has told me that gaslighting is a form of psychological manipulation which sows doubt in people’s minds and makes them question their own memory, perception and even sanity. Glaslighters use denial, misdirection, contradicting and lying to undermine their victim and their victim’s beliefs. Examples of gaslighting include denying something happened to even staging bizarre and fanciful events that lead the victim to question their grip on reality.  The term comes from Patrick Hamilton’s 1938 play, ‘Gaslight’. The play is about a cruel man who tries to drive his wife insane. He sometimes turns down the gaslights in his home and then persuades his wife that she is imagining the change. Two films based on the play were produced in the 1940s.

The term became fashionable again in 2016 when US journalists began accusing Donald Trump of gaslighting the American public. The term is also used in clinical and research literature.

Have you worked with or had to deal personally with someone who not only tried to undermine you, but also tried to make you question your perception of events – tried to contort your understanding of reality? This is classic gaslighting.

Psychopaths use gaslighting techniques. I’ve written about psychopaths before. Psychopaths have no empathy or affection for other people. They will destroy anyone who gets in their way. They are prepared to undermine co-workers to make themselves look good. Psychopaths are real. They do not just exist in movies. Around 1 per cent of the population are psychopaths. Experts say around 25 per cent of criminals in jails are psychopaths. They lack feelings for other people. They show no remorse or guilt. They are egotistical. Think of it as a form of emotional disability. Some people are born without sound or hearing. Psychopaths are born without the capacity for love. It is a genuine personality disorder.

But psychopaths are not the only people who use gaslighting. Self-centred, egotistical people are also capable of gaslighting. And sometimes so-called normal people who are forced into tight corners, gaslight. I am friends with a public servant who worked in a department that was to be restructured. There were to be job losses. My friend was subject to gaslighting by a colleague determined to make her look bad. This guy was convinced one of them was to be retrenched and he was determined to make sure it was my friend who sat behind him. In the end neither of the two lost their jobs, but it was a ghastly experience for my friend.

I am going to spend today’s blog and my next one focussing on gaslighting. Today I will focus on how to spot a gaslighter. In the next blog I will look at how to protect yourself form gaslighting.

What is a gaslighter?

1 .Liar, liar, pants on fire

People who gaslight use lies. They don’t just lie because they want you to be unaware of the truth. Some of their lies are so big and ridiculous that you instantly know they are blatant liars. They tell big lies because from there on you will never be sure if fact or fantasy is coming out of their mouth. You will always be confused and wrong-footed around them.

2. They deny they ever made this claim

Okay, you had just come to terms with the fact they are liars, but now the gaslighter is telling you they never said such a thing. Why would they make such an outlandish claim? Unfortunately no one was in the room when they made the original claim. You are inevitably going to ask yourself if you did hear them say this, or you’ve got it all wrong. It is unusual to encounter bare-faced liars so instead of facing the reality – they are lying, but you start looking for other explanations, ie did I dream that? Bingo, the gaslighter has succeeded in making you doubt reality – that’s their goal.

3. They use what is dearest to you against you

If the gaslighter knows you value your job, they will target that vulnerable spot. They will make out that you have failed to do crucial tasks properly. They may even sabotage your work behind your back and then accuse you of negligence. Again you will begin doubting reality, ie did I really forget to finish that report? 

4. They persevere … with your destruction

Gaslighters persevere with your destruction, even over weeks, months and years. They might drop the odd toxic comment, subtly put you down in front of others, hide documents from you. Even intelligent, organised people can be conned by a talented gaslighter. Nobody expects another person to go to such efforts to undermine them but I’m afraid truly evil gaslighters do.  

5. They suddenly can be nice to you

People, who gaslight, can often be supportive and pleasant. They are trying to elicit guilt in you, ie She’s not so bad, or I’ve read him all wrong or I’ll give her another go. Once you make the mistake of again trusting them, they will re-commence their mission to destroy you. Never trust the words of someone you suspect of gaslighting, instead, look at their long-term actions. That’s where they will reveal themselves.

6. They delight in your confusion

Psychopaths who gaslight know that normal people like a sense of stability and they expect others to be predictable consequently a gaslighter will delight in unsettling and unnerving their victims. Again, they want to undo the person because they perceive them as being a hindrance to their ultimate goal. Not all gaslighters are psychos. Some mean, unscrupulous people also use the method.

7. They turn others against you

Once a gaslighter has made headway getting you to doubt your own sanity, they will set about getting others to doubt you. Gaslighters are good at charming others and making friends. They will butter up a few colleagues at work, and once they have established a rapport they will drop the odd disparaging remark about you. Eventually they will claim you are a liar. At the same time they will tell you that these people are liars or say disparaging things about you. Their goal is to isolate you.

If you are aware someone is behaving like this towards you, you need to take action to protect yourself. I’ll go into details in my next blog.


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Pat Mesiti is a best-selling author, coach and educator in the area of personal development. Having built some of Australia’s largest people-driven organisations, Pat understands the power of harnessing human potential. He has shared the stage with some of the world’s great business minds and has sold over millions of copies of his books and materials.


  1. Stefan Galamaga says:

    This Gas lighting seems to fit into the concept of “false friends” These could be people or even ideas and beLIEfs picked up earlier in life that may have become credible if heard enough and because of our herd mentality.
    Most of us may have had friends that started off well, when all was rosy, but as time went perhaps circumstances changed those people were not true friends.
    Another example would the adoption of unhealthy habits like smoking or drugs. Immediate but short term gratification turns to nightmare with time, but still, the victim persists sub-consciously in the beliefs that those habits somehow still are their friends and important things in their life.

  2. Ann says:

    Thanks very much for this. It has happened to me (in a government department). I was retrenched, the person got my job. I was actually glad to be out of there, though I wasn’t able to get another job. The thing that upset me, when I found out about it some months after I left, was that my friend knew about what was happening (the gaslighter being ‘nice’ to me but bad-mouthing me to the manager) but didn’t tell me at the time. A pity, as I would have been forewarned. All in all, a bad experience, though fairly typical for federal government departments, as I later discovered.

  3. Roberta Brown says:

    I have met a few people like this and they love it if ypu have an empathetic nature. The empath tries to give them grace and they will turn on you time and time again. Very good blog Pat! Lool forward to the next one.

  4. Joanne Copp says:

    Unfortunately, this may be more common than you think. I have also been subjected to the most awful behaviour within a State Government Department. Can be very hard to deal with it when going through it. The learning for me was not to assume others hold my values. If anyone is going through this, I would say “wise-up, realise what you are up against, and either confront them or leave. Don’t try to turn things around with hard work or niceness. It is pointless.”

  5. Candice says:

    This happened to us when we recently opened our new cafe. The funny thing is this staff member called us gaslighters because they couldn’t take no for an answer. It was the first time I’ve heard of the term. I’m interested though – there are survival instincts that kick in when people are in needy situations & emotions & insecurity cause people to not behave at their best. At what point does their insecure behaviour turn into gaslighting? Is it the intention of the person to destroy, which can only truly be known by the person doing the destroying. I was advised by our HR consultant that the employee was not qualified to make that claim – calling us gaslighters – as it is a serious psychological term to be professionally identified by a qualified psychologist.

    Thanks for the blog! Super interesting!

  6. Carole says:

    Thank you Pat.

    It’s fabulous you are making people aware of this. It is the exact treatment I received from my Mother in Law who wanted her son back. He gave to me what she had received from him for years such as outings, dinners, weekends away and holidays etc. What all men do when they marry. As I am an Empath she could never get away with her lies. I spotted them up front. But Apaths were all taken in by her.

    The only difference between a Psychopath and a Sociopath is that the Psychopath also kills. She poisoned me for years before I identified what was wrong with me. Specialist had no idea. Thank goodness I was a Naturopath and was using herbs and homoeopathics or I would never have survived, I know I was close to death. Thank goodness we parted. My symptoms were the same as her partner who died many years before of similar symptoms to me. He was diagnosed as having Motor Neurone Disease and died soon after. And all the while everyone thought she was wonderful how she nursed him while he died.

    Never underestimate them. They turn your partner, your family and your friends against you and it’s extremely painful.

    Yes you are right Pat, they do not know what love is but they do know they are missing out on something and they want it. They will take it from you. They are lovely to your face and come in the back door. They are accomplished manipulators.

    If you are unlucky enough to be married to one, get out IMMEDIATELY. You will NEVER bring them around to treating you well. That is a losing game. You have lost before you begin. You forgive them and meet their attacks with love. BUT love will never win. Believe me, I tried.

    Nasty nasty nasty nasty. If you know one the very best way is to get as far away as possible and cut off all access. They will never change.

    I have researched them over the years and I can spot them fairly quickly these days. They are a blight on this earth. Total parasites.

    Pat if anyone wants more information to assist them I am happy to assist.

    With love and light.

  7. helen glen says:

    OMG Pat this is so true – it destroyed my multi million dollar businesses and my marriage. Unfortunately the the cruel fact was that it was my jealous partner whom I trusted with my very life who absolutely screwed up everything that I had ever worked for – Gaslighters are sneaky and so convincing that no one ever knows when the truth is being told. Nice to your face and awful behind your back. This terrible behaviour almost drove me over the edge….
    Thanks for sharing.

  8. soph says:

    My ex spent decades gaslighting me. Towards the end , over several years, the mental abuse stepped up. It ended when I was left lying screaming in fits crying hysterically on the garage floor with suicide as my only perceived escape. Thankfully somehow I got up and left. I moved 100kms away to a new city and new job.

    Three years later I remain unable to trust or confide in anyone, including my own parents or siblings. I live a normal yet isolated life out of fear of this happening again.

  9. Ann says:

    This Gaslighting is horrible! I know someone that had been going through this Gaslighting for 6 years.
    It had taken a hugh toll on this person’s quilty of life. Dr apt, Lawyer apt, & a Private investigator.
    Doucment everything!!
    People that are Gadlighters are criminals. What they are doing is a crime & they should be serving life sentences in prison.

  10. Anu says:

    OMG!!! This article hit the spot. I had to deal with a Gaslighter as my Husband’s assistant. Looks like she had been embezzaling cash from the company my Husband managed. She is also a textbook BPD! I would not put it past her to have killed him. However, she blamed my dead Husband for the missing money and the shareholders went after me and the estate of my deceased Husband legally for reparations. It was a holy nightmare. I was finally able to get through probate court, criminal court, and yes child custody court. She told my family that I was crazy and violent. Now $4.8 million later, I have to litigate in civil court to clear my dead Husband’s name. Literally sue the gaslighter in civil court. She will not show up because she will be arrested for fraudulently filing an assault charge against me. Then she has to explain her behavior on record. I have filed police report onto of police report with evidence on top of definitive evidence showing beyond a reasonable doubt the embezzalment. The harassing gaslighting has stopped for now. However, when will it start up again? That is my question.

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