The negation-induced forgetting effect remains even after reducing associative interference

Area of Science:

• Cognitive Psychology
• Neuroscience

Background:

• Negation processing engages neural networks associated with response inhibition.
• Inhibition mechanisms are implicated in human memory functions.

Purpose of the Study:

• To investigate the impact of producing negations during a verification task on long-term memory.
• To determine if the observed memory effects are attributable to negation itself or confounding variables.

Main Methods:

• Experiment 1: Participants read a story, performed a yes-no verification task, a distractor task, and a free recall test, using a paradigm similar to Mayo et al. (2014).
• Experiment 2: Modified the paradigm with two protagonists to isolate the effect of negation from associative interference by ensuring affirmed and denied sentences had identical content, differing only in protagonist attribution.

Main Results:

• Consistent with prior research, negated sentences were recalled less effectively than affirmed sentences in Experiment 1.
• The negation-induced forgetting effect remained significant in Experiment 2, even after controlling for potential confounding variables like associative interference.

Conclusions:

• The findings indicate that producing negations can lead to impaired long-term memory recall.
• This memory impairment is likely due to the reuse of inhibitory mechanisms engaged during negation processing.