A new study suggests that the space people keep between themselves and others could offer important clues about their mental health, especially for those with schizophrenia. Researchers found that individuals with paranoid symptoms tend to maintain a significantly larger personal space, which may reflect a stronger sense of perceived threat from social contact. The findings were published in the journal Molecular Psychiatry.
The research involved 92 patients with schizophrenia and 52 healthy participants. Scientists measured how close participants were comfortable standing to others, both when making eye contact and when avoiding it. The results showed that patients experiencing paranoia preferred to keep others at a much greater distance than those without paranoid symptoms or those without schizophrenia. This extended personal space, particularly in situations involving eye contact, was closely linked to feelings of discomfort and increased stress.
More importantly, the study found that these personal space preferences were not simply behavioural habits. They were measurable indicators of heightened stress responses. Using a wristband to monitor electrodermal activity, a sign of the body’s stress level, researchers observed that participants who preferred more space also showed stronger physiological stress reactions. This connection between increased personal space, paranoia, and stress suggests a cycle in which each factor may intensify the others.
One of the most practical findings of the study was that a simple personal space test could reliably identify people experiencing paranoia. At a distance of just over one metre, the test correctly detected signs of paranoia in more than nine out of ten cases. For individuals with more severe symptoms, the test proved both highly accurate and specific. This could provide mental health professionals with an easy-to-use method for detecting paranoia, particularly in cases where individuals might struggle to express their symptoms through verbal self-report.
While the personal space test proved helpful for identifying paranoia at a single point in time, its ability to predict longer-term mental health outcomes was more limited. Over a six-month period, patients who continued to experience high stress or maintained the same need for increased personal space were less likely to show progress in social functioning. This finding highlights the importance of addressing both stress levels and personal space behaviour in treatment plans.
The research also illustrated the difficulty of identifying paranoia through traditional questionnaires. Some patients with severe paranoid symptoms did not report them when asked directly. This shows the potential value of observing physical and behavioural signs such as preferred distance from others, which may reveal symptoms that patients themselves are unwilling or unable to discuss.
These findings suggest that small adjustments in clinical settings, such as respecting a patient’s preferred distance, could make a significant difference. Patients with paranoia might feel more at ease and less threatened when professionals allow for more space during interaction. Recognising persistent patterns in personal space use may also help identify patients who require more intensive support to improve their social outcomes.
