Gradual positive and negative affect induction: The effect of verbalizing affective content

PLoS One. 2020 May 29;15(5):e0233592. doi: 10.1371/journal.pone.0233592. eCollection 2020.

Abstract

In this paper, we study the effect of verbalizing affective pictures on affective state and language production. Individuals describe (Study I: Spoken Descriptions of Pictures) or passively view (Study II: Passively Viewing Pictures) 40 pictures for the International Affective Picture System (IAPS) that gradually increase from neutral to either positive or negative content. We expected that both methods would result in successful affect induction, and that the effect would be stronger for verbally describing pictures than for passively viewing them. Results indicate that speakers indeed felt more negative after describing negative pictures, but that describing positive (compared to neutral) pictures did not result in a more positive state. Contrary to our hypothesis, no differences were found between describing and passively viewing the pictures. Furthermore, we analysed the verbal picture descriptions produced by participants on various dimensions. Results indicate that positive and negative pictures were indeed described with increasingly more affective language in the expected directions. In addition to informing our understanding of the relationship between (spoken) language production and affect, these results also potentially pave the way for a new method of affect induction that uses free expression.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Affect*
  • Humans
  • Language*
  • Male
  • Pattern Recognition, Visual
  • Photic Stimulation*
  • Young Adult

Grants and funding

This study was funded by the Netherlands Organization for Scientific Research [360-89-050]. The award was granted to EK (principal investigator) and Mariët Theune and MG (co-applicants). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. More information on the project can be found at https://www.nwo.nl/onderzoek-en-resultaten/onderzoeksprojecten/i/45/13545.html.