Description

The Paykel Suicide Scale (PSS-5) is a brief psychometric instrument consisting of five questions designed to evaluate suicidal thoughts and behaviours. The scale assesses different aspects of suicidal experience, including the frequency of suicidal thoughts, the intensity and severity of these thoughts, the existence of a suicide plan, previous suicide-related behaviours, and the individual’s desire to live or die.

The PSS-5 is considered a short and practical tool that can be used in clinical and research settings for the assessment of suicidal tendencies and related psychological states.

Objective

The primary objective of the PSS-5 is the early detection of suicidal thoughts and behaviours and the assessment of the severity of suicidal ideation in order to estimate suicide risk.

Additionally, the scale aims to provide a simple and efficient instrument that can support clinical evaluation, monitoring, and research on suicidal behaviour.

Structure and Content

The PSS-5 includes five items focusing on:

the presence and frequency of suicidal thoughts,

the intensity of suicidal ideation,

suicidal planning,

previous suicide-related behaviours or attempts,

and the person’s wish to live or die.

Scoring Method

Responses are scored using a graded response format, ranging from low levels indicating the absence or limited presence of suicidal thoughts to higher levels reflecting frequent or intense suicidal ideation.

Higher scores indicate greater severity of suicidal thoughts and behaviours and suggest the need for further clinical assessment.

Data Analysis and Use

Data collected from the PSS-5 can be analysed to evaluate suicidal ideation and behaviours. Statistical procedures may include:

reliability analysis to assess internal consistency, such as Cronbach’s alpha,

descriptive statistics including mean, median, and standard deviation,

and correlation analyses with other psychological measures assessing depression, anxiety, and well-being.

In clinical settings, PSS-5 data may contribute to the detection of suicidal thoughts and the evaluation of the need for intervention or treatment.

Validity and Reliability

The calibration and psychometric evaluation of the PSS-5 include reliability analysis to confirm the stability and consistency of responses, commonly through the calculation of Cronbach’s alpha.

Confirmatory factor analysis can also be used to examine whether the five items represent a single underlying dimension of suicidal ideation. Cross-validation across different populations helps evaluate the applicability and reliability of the scale in different social and cultural contexts.

References

Paykel, E. S., Myers, J. K., Lindenthal, J. J., & Tanner, J. (1974). Suicidal feelings in the general population: A prevalence study. The British Journal of Psychiatry, 124(582), 460–469.

Paykel, E. S. (1997). The interview for recent life events. Psychological Medicine, 27(2), 301–310.

Hawton, K., & van Heeringen, K. (2009). Suicide. The Lancet, 373(9672), 1372–1381.