Knowledge about the predictive value of reward conditioned stimuli modulates their interference with cognitive...

Area of Science:

• Cognitive Psychology
• Neuroscience of Addiction
• Behavioral Science

Background:

• Conditioned stimuli acquire motivational properties, influencing behavior and potentially decreasing cognitive control.
• Implicit theories of addiction propose that drug-associated cues can automatically impair cognitive functions.

Purpose of the Study:

• To investigate if reward-associated stimuli interfere with cognitive processes unconsciously.
• To explore the role of awareness in stimulus-outcome contingencies on cognitive interference.

Main Methods:

• Participants (n=49) underwent a Pavlovian learning task pairing stimuli with high-reward (HR) or low-reward (LR) probabilities.
• Bayesian analysis categorized participants as Aware or Unaware of contingencies.
• Conditioned stimuli (CS) were used as distractors in modified flanker and N-back tasks.

Main Results:

• High-reward CS caused greater interference in the flanker task for Unaware participants, supporting implicit Pavlovian conditioning.
• Working memory in the N-back task was impaired by HR CS, but only in Aware participants.

Conclusions:

• Conditioned stimuli can implicitly interfere with cognitive processes, mimicking effects of drug-related stimuli.
• This interference may operate in a stimulus-driven manner, independent of conscious goals.
• Findings necessitate a re-evaluation of how implicit processes in addiction are measured.