Placebo Intervention Reduces Attention to Food Cues
Author Information
Author(s): Lanz Marina, Hoffmann Verena, Meissner Karin
Primary Institution: Ludwig-Maximilians-University Munich
Hypothesis
Can placebo-induced changes in appetite and satiety affect attention allocation to food cues?
Conclusion
Placebo-induced satiety inhibited attention allocation toward food in healthy women, potentially mediated by reduced hunger and food craving.
Supporting Evidence
- Women in the enhanced satiety placebo group showed significantly higher reaction times for food cues compared to non-food cues.
- Placebo effects on satiety could be demonstrated on a highly complex cognitive process.
- Expectations about the placebo intervention influenced attention allocation.
Takeaway
When women think they are full because of a placebo, they pay less attention to food. It's like when you're not hungry, you don't notice snacks as much.
Methodology
63 healthy participants were randomly assigned to enhanced appetite placebo, enhanced satiety placebo, or control groups and completed a visual probe task to measure attentional bias.
Potential Biases
Potential bias due to the expectancy manipulation and the small sample size for each gender group.
Limitations
The study only included healthy, normal-weight participants and analyzed men and women separately, limiting group sizes.
Participant Demographics
Participants were healthy individuals aged 18-40 years with a normal BMI (19-25 kg/m2), including 32 women and 31 men.
Statistical Information
P-Value
0.020
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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