Affective-Signaling Hypothesis

The affective-signaling hypothesis suggests the brain’s primary mechanism for detecting conflict or errors (conflicting stimuli) trigger emotional — specifically negative — signals to the brain to increase cognitive control and adapt to the conflict. This is interesting because it means that conflict doesn’t trigger purely cognitive signals, but negative emotional ones. Affective-signaling hypothesis extends traditional conflict-monitoring theory by proposing that affective and cognitive systems work together to avoid aversive signals. The theory proposes a feedback loop between the anterior cingulate cortex (ACC) detecting conflict and the prefrontal cortex (PFC) implementing control adjustments, in a specific sequence: 

• Conflict triggers aversive response: When faced with conflicting information or choices (trying to read the word RED printed in BLUE), the ACC’s conflict-monitoring system registers a negative emotion.
• Affect is monitored: The ACC registers this negative affective state as well as the conflicting responses. Neurophysiological evidence shows areas like the ACC are involved in processing both cognitive conflict and negative emotions (pain or social distress), supporting this overlap.
• Affect is a signal: This negative feeling is not just a byproduct but a crucial “learning signal” or a form of internal punishment. We’re motivated to regulate our behavior to avoid this unpleasant sensation in the future. It signals the PFC that a conflict is present, prompting it to boost cognitive control — pay more attention to the BLUE and less to the RED — in the next trial, thereby driving conflict adaptation. 
• Affect drives conflict adaptation: Cognitive control mechanisms shift attention away from distracting stimuli during the conflict to adapt to the situation. Affective-signaling hypothesis suggests we adapt our behavior to resolve conflict because the conflict feels bad, and our brain is motivated to avoid that negative feeling. This reframes cognitive control as a form of affect regulation.