Discarding optimality: Throwing out the baby with the bathwater?

Area of Science:

• Cognitive Science
• Neuroscience
• Decision Theory

Background:

• Normative theories of decision-making face challenges in explaining perceptual choices.
• Descriptive models, like the standard observer model, offer an alternative perspective.
• The utility of optimality as a hypothesis in perceptual decision-making is debated.

Purpose of the Study:

• To evaluate the continued relevance of optimality in perceptual decision-making research.
• To address arguments against normative approaches in favor of purely descriptive models.
• To demonstrate the utility of reward-rate maximization as a hypothesis.

Main Methods:

• Comparative analysis of normative and descriptive models of perceptual decision-making.
• Review of existing literature on optimality in perception.
• Theoretical argumentation regarding the role of reward-rate maximization.

Main Results:

• Optimality, particularly reward-rate maximization, remains a demonstrably useful hypothesis.
• Arguments against normative theories may overlook the practical utility of optimality.
• The standard observer model, while valuable, does not preclude the usefulness of optimality.

Conclusions:

• Optimality, defined as reward-rate maximization, is a valuable and empirically supported hypothesis in perceptual decision-making.
• A purely descriptive approach may not fully capture the functional aspects of perceptual decision processes.
• Future research should continue to explore the interplay between normative principles and descriptive observations.