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Related Experiment Video

Updated: May 25, 2026

Continuous Theta Burst Stimulation of the Posterior Medial Frontal Cortex to Experimentally Reduce Ideological Threat Responses

Continuous Theta Burst Stimulation of the Posterior Medial Frontal Cortex to Experimentally Reduce Ideological Threat Responses

Published on: September 28, 2018

The positivity scale.

Gian Vittorio Caprara¹, Guido Alessandri, Nancy Eisenberg

¹Department of Psychology, Sapienza University of Rome, Rome, Italy. gianvittorio.caprara@uniroma1.it

Psychological Assessment

|January 19, 2012

Summary

This summary is machine-generated.

The Positivity Scale (P Scale) is a new, valid, and reliable 8-item measure of a positive outlook. Its psychometric properties are robust across diverse populations and cultures, supporting positivity as a fundamental disposition.

Related Experiment Videos

Last Updated: May 25, 2026

Continuous Theta Burst Stimulation of the Posterior Medial Frontal Cortex to Experimentally Reduce Ideological Threat Responses

Continuous Theta Burst Stimulation of the Posterior Medial Frontal Cortex to Experimentally Reduce Ideological Threat Responses

Published on: September 28, 2018

Area of Science:

Psychology
Psychometrics
Personality Psychology

Background:

Positivity, the tendency to view life positively, is a key psychological disposition.
A validated, reliable measure is needed to quantify this trait accurately.

Purpose of the Study:

To introduce and validate a new 8-item Positivity Scale (P Scale).
To assess the psychometric properties, reliability, and validity of the P Scale across diverse samples.

Main Methods:

Classical test theory and confirmatory factor analysis were used to evaluate psychometric properties.
Scale invariance was tested across sexes, age groups, and cultural contexts.
Test-retest reliability was assessed over a 5-week interval.

Main Results:

The P Scale demonstrated strong internal consistency and unidimensionality.
The scale showed measurement invariance across sexes and cultures (Italy, US, Japan, Spain).
Positivity scores correlated significantly with self-esteem, life satisfaction, optimism, and negatively with depression.

Conclusions:

The 8-item Positivity Scale (P Scale) is a psychometrically sound and valid measure.
The P Scale is reliable and valid across diverse demographic and cultural groups.
Findings support positivity as a fundamental and measurable human disposition.