Actions do not speak louder than words in an interactive false belief task

Area of Science:

• Developmental Psychology
• Cognitive Science
• Neuroscience

Background:

• Traditionally, meta-representational Theory of Mind (ToM) was thought to emerge around age 4, coinciding with mastery of false belief (FB) tasks.
• Recent implicit measures suggest earlier ToM competence, challenging traditional views.
• Interactive FB tasks have shown infants can interpret communicative acts based on an interlocutor's beliefs, but replication studies yield mixed results.

Purpose of the Study:

• To systematically replicate an influential interactive FB task (Sefo task) across two laboratories.
• To investigate the reliability and validity of the Sefo task as a measure of early implicit social cognition.
• To compare performance across different age groups (17-month-olds, 2-year-olds, 3-year-olds) and with explicit measures.

Main Methods:

• Conducted direct replications of the Sefo task with 17-month-olds and compared with 3-year-olds.
• Performed conceptual replications with modifications for 2-year-olds to address pragmatic ambiguities.
• Validated the task using explicit verbal versions in older children and adults.

Main Results:

• The original Sefo task findings could not be replicated.
• No evidence of FB understanding was found in any age group tested, except for adults.
• The Sefo task may not be a sensitive measure for implicit FB understanding in children.

Conclusions:

• The study contributes to the replication crisis in implicit ToM research.
• The Sefo task appears to underestimate ToM abilities in young children.
• Developing sensitive, reliable, and valid measures for early implicit social cognition remains a significant challenge.