Still Suspicious: The Suspicious-Coincidence Effect Revisited

Area of Science:

• Cognitive Psychology
• Developmental Psychology
• Linguistics

Background:

• Learning novel noun meanings presents a challenge due to ambiguity in abstraction levels.
• The "suspicious-coincidence effect" suggests learners favor subordinate meanings with more examples (Xu & Tenenbaum, 2007a).
• Prior research questioned the effect's robustness, suggesting it depends on simultaneous example presentation (Spencer et al., 2011).

Purpose of the Study:

• To systematically investigate the factors influencing the suspicious-coincidence effect in noun learning.
• To reconcile conflicting findings regarding the role of example presentation timing and order.
• To clarify the impact of pragmatic influences on experimental task behavior.

Main Methods:

• Conducted 12 experiments with 600 participants (children and adults).
• Systematically manipulated experimental parameters including example presentation timing and trial order.
• Replicated findings from both Xu & Tenenbaum (2007a) and Spencer et al. (2011) studies.

Main Results:

• The suspicious-coincidence effect was successfully replicated across experiments.
• The effect proved robust to the presentation timing of examples (simultaneous vs. sequential).
• Trial order emerged as a critical factor influencing the suspicious-coincidence effect, contrary to previous assumptions.

Conclusions:

• The suspicious-coincidence effect in noun learning is not dependent on simultaneous presentation.
• Pragmatic factors, specifically trial order, significantly influence how learners interpret ambiguous word meanings.
• This study clarifies the conditions under which the suspicious-coincidence effect operates, highlighting its generalizability.