A Brief Version of the Implicit Positive and Negative Affect Test (IPANAT-18).

Area of Science:

• Psychology
• Psychometrics

Background:

• Self-reports of affect have limitations.
• The Implicit Positive and Negative Affect Test (IPANAT) is an indirect measure of affect, validated across multiple languages.
• A need exists for brief, reliable measures of implicit affect.

Purpose of the Study:

• To evaluate the psychometric properties of an 18-item version of the IPANAT (IPANAT-18) in Spanish adults.
• To assess the reliability and validity of the IPANAT-18.
• To compare the IPANAT-18 with the full IPANAT and explicit affect measures.

Main Methods:

• A sample of 242 Spanish adults participated.
• An 18-item version of the IPANAT was created by randomly selecting stimuli words.
• Confirmatory Factor Analysis (CFA) and correlational analyses were employed.

Main Results:

• The IPANAT-18 replicated the two-factor structure (positive vs. negative affect) with a good model fit.
• Reliability was adequate for implicit positive affect (α = .86) and negative affect (α = .77).
• Correlations with explicit affect measures were consistent with prior research, and scores between the 18-item and 36-item versions were highly correlated (PA, r = .92; NA, r = .88).

Conclusions:

• The IPANAT-18 exhibits satisfactory psychometric properties.
• This brief version is a useful and economical tool for measuring affective processes.
• The IPANAT-18 is suitable for experimental and large-scale assessments, such as daily diary studies.