Remembering in contradictory minds: disjunction fallacies in episodic memory.

Area of Science:

• Cognitive Psychology
• Memory Research
• Judgment and Decision Making

Background:

• Disjunction fallacies are well-documented in probability judgment.
• These fallacies may extend to episodic memory if recall is influenced by how information is presented during testing.

Purpose of the Study:

• To investigate the presence and nature of disjunction fallacies in episodic memory.
• To determine if memory disjunction fallacies are influenced by description-dependency and response bias.

Main Methods:

• Conducted a series of experiments manipulating factors like test cue type, testing delay, word frequency, and emotional valence.
• Analyzed memory performance at both individual and group levels to detect disjunction fallacies.

Main Results:

• Memory disjunction fallacies were consistently observed in episodic memory.
• The occurrence of these fallacies was modulated by experimental manipulations affecting description-dependency.
• Both description-dependency and response bias were identified as contributing factors.

Conclusions:

• Introduced description-dependent memory as a novel form of episodic distortion, alongside forgetting and false memory.
• Suggested that disjunction fallacies in probability judgment might be partly explained by response bias, challenging traditional memory retrieval explanations.