Conflict detection with invalid inferences: All heuristics, no logic.

Area of Science:

• Cognitive Psychology
• Human Reasoning
• Decision Making

Background:

• Conflict detection between beliefs and logic is crucial for engaging in reflective thinking during reasoning.
• Current models explain conflict detection, but struggle with 'reverse' detection effects observed in syllogistic reasoning.
• These 'reverse' effects challenge existing frameworks and cannot be solely attributed to measurement error.

Purpose of the Study:

• To investigate whether 'reverse' conflict detection effects in invalid syllogisms arise from a mismatch between expected and actual conflict locations.
• To determine if subjective validity influences conflict detection in syllogistic reasoning tasks.

Main Methods:

• Conducted two experiments with 248 participants analyzing syllogistic reasoning.
• Examined reaction times and confidence ratings for valid and invalid syllogisms.
• Assessed conflict detection by treating invalid items as subjectively valid to identify subjective conflict points.

Main Results:

• Many participants perceived invalid AC and DA syllogisms as intuitively valid.
• No significant differences in reaction time or confidence were found between valid and invalid items when controlling for believability and response.
• 'Reverse' detection effects on invalid items vanished when participants' subjective validity judgments were considered.

Conclusions:

• Conflict in syllogistic reasoning likely emerges from interactions between two heuristic responses, rather than between logic and heuristics.
• Subjective conflict, not objective logical conflict, is the more relevant factor when measuring conflict detection in such tasks.
• Revising current models to incorporate subjective conflict is necessary for accurately understanding reasoning processes.