One of the most common things family members say about a loved one with schizophrenia is some version of: "I can't argue them out of it." That is correct, and it is not a personal failure. Strong beliefs in psychosis are not held the way ordinary opinions are; they are felt as direct perception. Reality testing — a core technique in cognitive behavioural therapy for psychosis (CBTp) — is the alternative to arguing. Done well, it is collaborative, curious, and gentle.
Reality testing is the structured habit of treating a strong belief as one possible explanation among several, then looking — gently — for evidence about which explanation fits best.
What reality testing is not
- It is not arguing with someone (or yourself) that a belief is wrong.
- It is not "snapping out of it."
- It is not pretending a belief isn't there.
It is closer to the way a scientist treats a hypothesis: "This might be true. What else might be true? What would we expect to see if each were true?" The technique is rooted in the cognitive model used in CBTp and described in detail in clinician manuals such as those summarised by the NICE schizophrenia guideline and outlined in NIMH's patient resources.
The five steps
- Name the belief, gently. Write it down in one sentence, without judgement: "I believe my neighbour is putting cameras in my house."
- Rate it. On a 0–100 scale, how much do you believe it right now? On the same scale, how distressing is it?
- List the evidence for. What is making you believe it? "Strange clicking sounds in the wall. He stared at me last week."
- List alternatives. What other explanations could account for the same observations? Old plumbing makes clicking. Anyone might glance at a neighbour. The mind, especially under stress, finds patterns.
- Plan a small experiment (only if safe). For example, listen for the clicking at three different times of day and note what is happening. Or ask a trusted friend to sit in the room and tell you what they hear.
Worked example
The following is a composite, illustrative example — not a real patient.
Belief: "The traffic lights change on purpose to signal me."
Belief rating: 90/100. Distress: 80/100.
Evidence for: Lights seem to turn red just as I approach. It feels meaningful.
Alternative explanations: Lights are timed by traffic engineers. I notice them more when I am anxious. Other drivers experience the same red lights but don't read meaning into them.
Experiment: Walk to the corner with a friend and count, over five minutes, how often the light is red when each of us arrives. If the rate is roughly equal, the "signal" explanation becomes less convincing.
After running the experiment: "Belief rating dropped to 60. Still feels weird, but I can let it go more easily."
Why ratings matter
Beliefs in psychosis rarely jump from 100 to 0. The aim is not certainty in either direction but flexibility — moving from "this is the only possible truth" to "this might be one of several explanations." Even a 20-point drop in belief or distress is clinically meaningful and tends to make daily life easier.
How to do this for yourself
Reality testing on your own works best with these guardrails:
- Do it on calm days. Trying it at the peak of distress rarely works.
- Write it down. Out of your head, onto paper. Distance helps.
- Use a trusted person as a sounding board where possible. They are not arguing with you — they are noticing alongside you.
- Treat any drop in belief or distress as a win.
How families can help (and not hurt)
- Don't: say "that's not real," "you're being paranoid," or "stop thinking like that."
- Do: say "I can see that feels very real to you. Can we look at it together?"
- Don't: stage elaborate "proofs" without consent.
- Do: ask what experiment your loved one would find useful.
When reality testing isn't the right tool
Reality testing is least useful when:
- The person is in acute psychosis and overwhelmed
- The belief is tightly tied to identity (a long-held religious or grandiose belief)
- The experiment would be unsafe
In these cases, focus instead on safety, grounding, and contact with the treatment team. Acceptance-based approaches (ACT for psychosis) and metacognitive therapy may be a better fit.
The belief involves a perceived threat that is leading toward harm to self or others, or includes command voices urging action. Call your treatment team, 988 (US), or your local emergency line.
Working with a CBTp therapist
Reality testing is much easier when guided by a trained therapist. The NAMI psychotherapy guide and SAMHSA's helpline are reasonable first stops for finding one. CBTp is recommended in NICE guidance for everyone with schizophrenia.
This article is for educational purposes only and is not medical advice, diagnosis, or treatment. Always consult a qualified mental health professional. If you or someone you know is in crisis, call or text 988 in the US, or your local emergency number.