Tracing the identity of objects.

Area of Science:

• Cognitive Science
• Philosophy of Mind
• Psychology of Perception

Background:

• Understanding object identity over time is a fundamental cognitive challenge.
• Previous theories, like Nozick's (1981), provide a basis for object persistence.
• Judgments of object identity are crucial for navigating the physical world.

Purpose of the Study:

• To propose and test a causal continuer model for object identity judgments.
• To quantitatively and qualitatively assess the model's predictive accuracy.
• To investigate how people determine if an object at time t(1) is the same as at time t(0).

Main Methods:

• Development of a causal continuer model based on proximity and closeness of contenders.
• Quantitative testing of the model using human judgments of object identity (Experiments 1 and 2).
• Qualitative evaluation of the model's predictions across radical disassembly and ordinary transformations (Experiments 1-3).

Main Results:

• The causal continuer model accurately predicted human judgments of object identity.
• The model demonstrated strong predictive power for identity across significant object transformations.
• Both quantitative and qualitative predictions of the model were validated by experimental data.

Conclusions:

• The causal continuer model provides a robust framework for understanding object identity judgments.
• Causal closeness and the principle of the closest continuer are key factors in object persistence perception.
• This model offers a parsimonious explanation for object identity across diverse scenarios.