On the Measurement of Episodic Empowerment

This article reports the development and validation of the Episodic Empowerment Scale (EES): A manipulation check designed to measure a momentary psychological state. In Study 1, participants (n = 125) completed a selection of candidate items after being exposed to a low- or high-power manipulation. Exploratory factor analysis was used to reduce the number of items to a brief five-item measure. We then examined the validity, reliability, and stability of the EES. Study 2 (n = 143) compared the target sensitivity of the EES to a widely used measure of power. In Study 3 (n = 129), we investigated the discriminant content validity of the EES by testing its sensitivity to a non-target manipulation: positive and negative affect. Finally, in a large-scale replication, Study 4 (n = 479) established the measurement invariance of the EES across experimental conditions and the interaction between conditions and gender as well as replicating the findings from Study 1. Our results indicate that the EES is a brief, valid, and sensitive manipulation check. Findings are discussed within the broader context of validating self-report manipulation checks and the importance of employing robust psychometric techniques in experimental social psychology.