Is zero effect really evidence of no effect? Introducing an outcomes balance perspective

Area of Science:

• Psychology
• Media Studies
• Sociology

Background:

• Research on social media's influence on body image yields inconsistent findings, often reporting small or negligible effects.
• These inconsistencies prompt questions about the interpretation of null effects in psychological research.
• Existing studies often overlook the potential for opposing mediating factors to cancel each other out.

Purpose of the Study:

• To explore the meaning of null effects in the context of social media and body image research.
• To propose an "outcomes balance perspective" to better understand complex causal relationships.
• To provide recommendations for researchers to apply this new perspective.

Main Methods:

• Conceptual analysis of null effects in psychological research, using social media and body image as a case study.
• Outlining the "outcomes balance perspective" where positive and negative mediators are considered.
• Proposing methodological recommendations for future research.

Main Results:

• Null statistical effects can arise when opposing mediators (e.g., social validation vs. negative feedback) cancel each other out.
• The "outcomes balance perspective" suggests that the aggregate balance of positive and negative mediator effects is crucial for understanding causality.
• This perspective highlights the need to examine shifts in the risk balance over time.

Conclusions:

• Researchers should reconceptualize risk as a balance of positive and negative mediating effects.
• It is recommended to routinely test for mediation, even with small total effects.
• Employing within-person and intensive longitudinal designs, alongside triangulating findings, can enhance understanding of these complex relationships.